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Hand Valves(Plumbing Type and Direction:Direct Side Surface)

Hand valves are devices used to manually adjust the flow direction, pressure, flow rate or another property of a fluid (liquid, vapor or gas). Hand valve bodies are made of materials such as aluminum, steel, stainless steel, PVC and resin. Hand valves are usually connected for use with pipes containing flowing fluids using fittings made of the same material as the hand valve body. Hand valve controls are often made of a different material from the body. The controls come in forms such as knobs, handles and levers. The standard types are 2-way valves with 2 fluid input/output ports and 3-way valves with 3. They are attached in accordance with the direction of fluid flow. There are many different hand valve models designed to connect to different pipe diameters and support different operating pressure ranges. There are also different fitting types such as screw-in, flange and welded fittings, so each hand valve model should be selected to match the operating environment.
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    Finger Valve VHK Series
    Finger Valve VHK Series
    Finger Valve VHK Series
    Finger Valve VHK Series
    Finger Valve VHK Series
    Finger Valve VHK Series
    Finger Valve VHK Series
    Sale

    Finger Valve VHK Series

    SMC

    Finger Valve VHK Series that makes it easy to distinguish between 2-port valves and 3-port valves by the color of the knobs. [Features]· Poppet valve construction that rarely suffers from seal defects.· The direction of the knob clearly indicates whether the valve is open or closed.

    CAD :
    2D / 3D
    Connecting Tube Diameter Number of Ports Switching Operation Effective Sectional Area(mm2) Main Body Shape Pipe Port Type Number of Switching Positions Plumbing Thread Nominal Plumbing Type and Direction Effective Sectional Area【classification】(mm2) How to Mount
    Ø4 / Ø6 / Ø8 / Ø10 / Ø12 2-Port / 3-Port Knob 1.48 ~ 15.68 One-Touch Fitting Type M / Rc (R) / One-Touch Plumbing 2-Position Normally Closed M5 / 1/8 / 1/4 / 3/8 / 1/2 Direct Side Surface 5 or Less ~ ~20 Side / Bottom
    Days to Ship: Số ngày giao hàng: Same day or more
    day to ship Same day or more
  • You can add up to 6 items per a category to the compare list.

    Hand Valve VH Series
    Hand Valve VH Series
    Hand Valve VH Series
    Hand Valve VH Series
    Hand Valve VH Series
    Hand Valve VH Series

    Hand Valve VH Series

    SMC

    Hand Valve VH Series that allows the direction of flow to be confirmed with a glance. [Features]· The flow direction can be confirmed with just a glance at the direction of the handle.

    CAD :
    2D / 3D
    Connecting Tube Diameter Number of Ports Switching Operation Effective Sectional Area(mm2) Main Body Shape Pipe Port Type Number of Switching Positions Plumbing Thread Nominal Plumbing Type and Direction Effective Sectional Area【classification】(mm2) How to Mount
    - 4-Port Manual Lever 10.15 ~ 276.75 Block Horizontal Type Rc (R) / NPT / G 3-Position Closed Center / 3-Position Exhaust Center / Others 1/4 / 3/8 / 1/2 / 3/4 / 1 Direct Side Surface ~15 ~ ~90 Bottom / Panel Mounting
    Days to Ship: Số ngày giao hàng: Same day or more
    day to ship Same day or more
  • You can add up to 6 items per a category to the compare list.

    Finger Valve, VHK-A Series

    Finger Valve, VHK-A Series

    SMC

    [Features]・ The opening and closing of the valve is easily displayed by the direction of the knob・ Small knob operation force (0.04 to 0.14 N・m)・ With handle removal prevention function・ Large effective cross-section precision 2.0 to 17.5 mm2・ Poppet valve structure with few seal defects・ Series from tube outer diameter ø4・ 4 types can be selected according to the piping specifications・ The 3-port valve exhausts the residual pressure on the 2 (A) side with SHUT (There is no exhaust port)

    Connecting Tube Diameter Number of Ports Switching Operation Effective Sectional Area(mm2) Main Body Shape Pipe Port Type Number of Switching Positions Plumbing Thread Nominal Plumbing Type and Direction Effective Sectional Area【classification】(mm2) How to Mount
    Ø4 / Ø6 / Ø8 / Ø10 / Ø12 2-Port / 3-Port Manual Lever 2.58 ~ 15.68 One-Touch Fitting Type Rc (R) / One-Touch Plumbing 2-Position Normally Closed / 2-Position Exhaust 1/8 / 1/4 / 3/8 / 1/2 Direct Side Surface 5 or Less ~ ~20 Side / Bottom
    Days to Ship: Số ngày giao hàng: 12 Day(s) or more
    day to ship 12 Day(s) or more
  • You can add up to 6 items per a category to the compare list.

    Finger Valve (Rotary Knob Pneumatic Manual Control Valve) PHV Series

    Finger Valve (Rotary Knob Pneumatic Manual Control Valve) PHV Series

    AIRTAC

    - PHV-Finger valve.- The series for product code PHV.- Plastic Body Material: PBT (Polybutylene Terephthalate).- Knob Material: POM- O-Rings material: NBR (Nitrile Rubber)- Port size Diameter: 6, 8, 10 and 12 mm.- Operating Temperature Range: -20 to 70℃- Operating Pressure Range: 0 to 1.0 MPa- Applicable tubing: soft nylon or Polyurethane.- Standard Body Color: Gray and Black.- Knob Identifier: A (Three way) and B (Two way).- The finger valve has excellent flow and highly sensitive anti-direction characteristics.

    CAD :
    2D / 3D
    Connecting Tube Diameter Number of Ports Switching Operation Effective Sectional Area(mm2) Main Body Shape Pipe Port Type Number of Switching Positions Plumbing Thread Nominal Plumbing Type and Direction Effective Sectional Area【classification】(mm2) How to Mount
    Ø6 / Ø8 / Ø10 / Ø12 2-Port Knob - One-Touch Fitting Type One-Touch Plumbing 2-Position Normally Open - Direct Side Surface - Side
    From: 117,093 VND
    Days to Ship: Số ngày giao hàng: 4 Day(s) or more
    day to ship 4 Day(s) or more
  • You can add up to 6 items per a category to the compare list.

    Auxiliary equipment hand valve FV series

    Auxiliary equipment hand valve FV series

    KOGANEI

    [Features]·It is a valve for switching the flow path in the middle of piping·It can be installed in various places and can be connected horizontally·3-way valve (standard type, with exhaust mechanism) and 2-way valve are also available[Applications]・ Compatible with pneumatic equipment and production lines in all industries

    CAD :
    2D / 3D
    Connecting Tube Diameter Number of Ports Switching Operation Effective Sectional Area(mm2) Main Body Shape Pipe Port Type Number of Switching Positions Plumbing Thread Nominal Plumbing Type and Direction Effective Sectional Area【classification】(mm2) How to Mount
    Ø6 / Ø8 / Ø10 / Ø12 2-Port / 3-Port Knob - One-Touch Fitting Type Rc (R) / One-Touch Plumbing 2-Position Normally Closed 1/8 / 1/4 / 3/8 Direct Side Surface - Side
    From: 283,420 VND
    Days to Ship: Số ngày giao hàng: Same day or more
    day to ship Same day or more
  • You can add up to 6 items per a category to the compare list.

    Residual Pressure Relief 3 Port Hand Valve VHS400/500
    Residual Pressure Relief 3 Port Hand Valve VHS400/500
    Residual Pressure Relief 3 Port Hand Valve VHS400/500
    Residual Pressure Relief 3 Port Hand Valve VHS400/500
    Residual Pressure Relief 3 Port Hand Valve VHS400/500
    Residual Pressure Relief 3 Port Hand Valve VHS400/500
    Residual Pressure Relief 3 Port Hand Valve VHS400/500
    Residual Pressure Relief 3 Port Hand Valve VHS400/500
    Residual Pressure Relief 3 Port Hand Valve VHS400/500
    Residual Pressure Relief 3 Port Hand Valve VHS400/500

    Residual Pressure Relief 3 Port Hand Valve VHS400/500

    SMC

    Residual Pressure Relief 3 Port Hand Valve VHS400/500 that allows the flow direction to be confirmed with just a glance at the direction of the handle. [Features]· A safety manual switch valve for preventing accidents that can be caused by residual pressure while performing maintenance on pneumatic systems .· The valve is compact with a large capacity.

    CAD :
    2D / 3D
    Connecting Tube Diameter Number of Ports Switching Operation Effective Sectional Area(mm2) Main Body Shape Pipe Port Type Number of Switching Positions Plumbing Thread Nominal Plumbing Type and Direction Effective Sectional Area【classification】(mm2) How to Mount
    - 3-Port Manual Lever 22.99 ~ 101.41 Others Rc (R) / NPT / G 2-Position Normally Closed 1/4 / 3/8 / 1/2 / 3/4 Direct Side Surface ~30 ~ ~200 Bottom
    Days to Ship: Số ngày giao hàng: Same day or more
    day to ship Same day or more
  • You can add up to 6 items per a category to the compare list.

    Hand Valve (2 Positions, 3 Ports) HSV Series
    Hand Valve (2 Positions, 3 Ports) HSV Series
    Hand Valve (2 Positions, 3 Ports) HSV Series
    Hand Valve (2 Positions, 3 Ports) HSV Series
    Hand Valve (2 Positions, 3 Ports) HSV Series

    Hand Valve (2 Positions, 3 Ports) HSV Series

    AIRTAC

    [Features]·Various thread connection types・ Improved operability·Large effective distribution area·With color anodizing, it is possible to maintain color gloss for a long time

    CAD :
    2D / 3D
    Connecting Tube Diameter Number of Ports Switching Operation Effective Sectional Area(mm2) Main Body Shape Pipe Port Type Number of Switching Positions Plumbing Thread Nominal Plumbing Type and Direction Effective Sectional Area【classification】(mm2) How to Mount
    - 3-Port Others 140 Pin Shape Rc (R) 2-Position Normally Closed 1/2 Direct Side Surface ~200 Side
    From: 438,176 VND
    Days to Ship: Số ngày giao hàng: 6 Day(s) or more
    day to ship 6 Day(s) or more
  • You can add up to 6 items per a category to the compare list.

    Hand Valves 400HV Series

    Hand Valves 400HV Series

    KOGANEI

    Optimal for switching air cylinders. Can be switched reliably with the rotary system. Note: CAD data of this series is being revised. Please wait till the corrections are done.[Features]· Optimal for switching air cylinders.· Manually switchable 4-port valve.· Can be switched reliably with the rotary system (swing lever).

    CAD :
    2D
    Connecting Tube Diameter Number of Ports Switching Operation Effective Sectional Area(mm2) Main Body Shape Pipe Port Type Number of Switching Positions Plumbing Thread Nominal Plumbing Type and Direction Effective Sectional Area【classification】(mm2) How to Mount
    - 4-Port Manual Lever 26 Block Horizontal Type Rc (R) 3-Position Closed Center 1/4 / 3/8 / 1/2 Direct Side Surface ~30 Bottom
    From: 2,264,093 VND
    Days to Ship: Số ngày giao hàng: 4 Day(s) or more
    day to ship 4 Day(s) or more
  • You can add up to 6 items per a category to the compare list.

    Finger Valve, Rechargeable Battery Compatible, 25A-VHK Series

    Finger Valve, Rechargeable Battery Compatible, 25A-VHK Series

    SMC

    [Rechargeable battery compatible series]Copper (Cu) and zinc (Zn) materials are not used in the rechargeable battery manufacturing process to reduce product defects.Some aluminum alloys and die-cast aluminum materials contain small amounts of copper (Cu) and zinc (Zn) as additive elements.Electrolytic nickel plating and zinc plating with copper base are not used. (Electroless nickel plating is used.)It uses low dew point compatible grease, -70°C compatible, improved performance in low dew point environment.

    Connecting Tube Diameter Number of Ports Switching Operation Effective Sectional Area(mm2) Main Body Shape Pipe Port Type Number of Switching Positions Plumbing Thread Nominal Plumbing Type and Direction Effective Sectional Area【classification】(mm2) How to Mount
    Ø4 / Ø6 2-Port / 3-Port Knob 2.58 ~ 6.46 One-Touch Fitting Type One-Touch Plumbing 2-Position Normally Closed - Direct Side Surface 5 or Less ~ ~10 Side / Bottom
    From: 237,600 VND
    Days to Ship: Số ngày giao hàng: 15 Day(s) or more
    day to ship 15 Day(s) or more
  • You can add up to 6 items per a category to the compare list.

    Open/close valve SD

    Open/close valve SD

    ESCO

    【Product Specifications】・Operating pressure range- 0 to 0.9MPa・Service temperature range-0 to 60℃(no freezing)・Material-Body resin portion:PBT, Metal department:brass(rust-resistant electroless nickel plating), Handle:POM・Applicable fluid-Air・Tube dia.-6mm・Thread size-R1/8

    Connecting Tube Diameter Number of Ports Switching Operation Effective Sectional Area(mm2) Main Body Shape Pipe Port Type Number of Switching Positions Plumbing Thread Nominal Plumbing Type and Direction Effective Sectional Area【classification】(mm2) How to Mount
    - 2-Port Knob - Others - - - Direct Side Surface - Side
    From: 480,305 VND
    Days to Ship: Số ngày giao hàng: 6 Day(s) or more
    day to ship 6 Day(s) or more
  • You can add up to 6 items per a category to the compare list.

    Open/close valve SF

    Open/close valve SF

    ESCO

    【Product Specifications】・Operating pressure range- 0 to 0.9MPa・Service temperature range-0 to 60℃(no freezing)・Body material-resin:PBTMetal:Brass yellow(Rust-resistant electroless nickel plating)・Applicable fluid-Air・Thread size-R1/4・Tube dia.-8mm

    Connecting Tube Diameter Number of Ports Switching Operation Effective Sectional Area(mm2) Main Body Shape Pipe Port Type Number of Switching Positions Plumbing Thread Nominal Plumbing Type and Direction Effective Sectional Area【classification】(mm2) How to Mount
    - 2-Port Knob - Others - - - Direct Side Surface - Side
    From: 466,619 VND
    Days to Ship: Số ngày giao hàng: 6 Day(s) or more
    day to ship 6 Day(s) or more
  • You can add up to 6 items per a category to the compare list.

    Open/Close Valve SH/SJ

    Open/Close Valve SH/SJ

    ESCO

    【Product Specifications】・Operating pressure range- 0 to 0.9MPa・Service temperature range-0 to 60℃(no freezing)・Body material-resin:PBTMetal:Brass yellow(Rust-resistant electroless nickel plating)・Applicable fluid-Air・IN-6mm・OUT-6mm

    Connecting Tube Diameter Number of Ports Switching Operation Effective Sectional Area(mm2) Main Body Shape Pipe Port Type Number of Switching Positions Plumbing Thread Nominal Plumbing Type and Direction Effective Sectional Area【classification】(mm2) How to Mount
    - 2-Port / 3-Port Knob - One-Touch Fitting Type - - - Direct Side Surface - Side
    From: 429,735 VND
    Days to Ship: Số ngày giao hàng: 6 Day(s) or more
    day to ship 6 Day(s) or more
  • You can add up to 6 items per a category to the compare list.

    On-off valve SK/SL

    On-off valve SK/SL

    ESCO

    【Product Specifications】・Operating pressure range- 0 to 0.9MPa・Service temperature range-0 to 60℃(no freezing)・Body material-resin:PBTMetal:Brass yellow(Rust-resistant electroless nickel plating)・Applicable fluid-Air・IN-R1/4・OUT-R1/4

    Connecting Tube Diameter Number of Ports Switching Operation Effective Sectional Area(mm2) Main Body Shape Pipe Port Type Number of Switching Positions Plumbing Thread Nominal Plumbing Type and Direction Effective Sectional Area【classification】(mm2) How to Mount
    - 2-Port / 3-Port Knob - - - - - Direct Side Surface - Side
    From: 509,976 VND
    Days to Ship: Số ngày giao hàng: 6 Day(s) or more
    day to ship 6 Day(s) or more
BrandNhãn hiệu
Product SeriesDòng sản phẩm
CADCAD
From
Days to ShipSố ngày giao hàng
Connecting Tube Diameter
Number of Ports
Switching Operation
Effective Sectional Area(mm2)
Main Body Shape
Pipe Port Type
Number of Switching Positions
Plumbing Thread Nominal
Plumbing Type and Direction
Effective Sectional Area【classification】(mm2)
How to Mount

    You can add up to 6 items per a category to the compare list.Sale

    Finger Valve VHK Series
      Finger Valve VHK Series
      Finger Valve VHK Series
      Finger Valve VHK Series
      Finger Valve VHK Series
      Finger Valve VHK Series
      Finger Valve VHK Series

        You can add up to 6 items per a category to the compare list.

        Hand Valve VH Series
          Hand Valve VH Series
          Hand Valve VH Series
          Hand Valve VH Series
          Hand Valve VH Series
          Hand Valve VH Series

            You can add up to 6 items per a category to the compare list.

            Finger Valve, VHK-A Series

                You can add up to 6 items per a category to the compare list.

                Finger Valve (Rotary Knob Pneumatic Manual Control Valve) PHV Series

                    You can add up to 6 items per a category to the compare list.

                    Auxiliary equipment hand valve FV series

                        You can add up to 6 items per a category to the compare list.

                        Residual Pressure Relief 3 Port Hand Valve VHS400/500
                          Residual Pressure Relief 3 Port Hand Valve VHS400/500
                          Residual Pressure Relief 3 Port Hand Valve VHS400/500
                          Residual Pressure Relief 3 Port Hand Valve VHS400/500
                          Residual Pressure Relief 3 Port Hand Valve VHS400/500
                          Residual Pressure Relief 3 Port Hand Valve VHS400/500
                          Residual Pressure Relief 3 Port Hand Valve VHS400/500
                          Residual Pressure Relief 3 Port Hand Valve VHS400/500
                          Residual Pressure Relief 3 Port Hand Valve VHS400/500
                          Residual Pressure Relief 3 Port Hand Valve VHS400/500

                            You can add up to 6 items per a category to the compare list.

                            Hand Valve (2 Positions, 3 Ports) HSV Series
                              Hand Valve (2 Positions, 3 Ports) HSV Series
                              Hand Valve (2 Positions, 3 Ports) HSV Series
                              Hand Valve (2 Positions, 3 Ports) HSV Series
                              Hand Valve (2 Positions, 3 Ports) HSV Series

                                You can add up to 6 items per a category to the compare list.

                                Hand Valves 400HV Series

                                    You can add up to 6 items per a category to the compare list.

                                    Finger Valve, Rechargeable Battery Compatible, 25A-VHK Series

                                        You can add up to 6 items per a category to the compare list.

                                        Open/close valve SD

                                            You can add up to 6 items per a category to the compare list.

                                            Open/close valve SF

                                                You can add up to 6 items per a category to the compare list.

                                                Open/Close Valve SH/SJ

                                                    You can add up to 6 items per a category to the compare list.

                                                    On-off valve SK/SL
                                                      BrandNhãn hiệu

                                                      SMC

                                                      SMC

                                                      SMC

                                                      AIRTAC

                                                      KOGANEI

                                                      SMC

                                                      AIRTAC

                                                      KOGANEI

                                                      SMC

                                                      ESCO

                                                      ESCO

                                                      ESCO

                                                      ESCO

                                                      Product SeriesDòng sản phẩm

                                                      Finger Valve VHK Series

                                                      Hand Valve VH Series

                                                      Finger Valve, VHK-A Series

                                                      Finger Valve (Rotary Knob Pneumatic Manual Control Valve) PHV Series

                                                      Auxiliary equipment hand valve FV series

                                                      Residual Pressure Relief 3 Port Hand Valve VHS400/500

                                                      Hand Valve (2 Positions, 3 Ports) HSV Series

                                                      Hand Valves 400HV Series

                                                      Finger Valve, Rechargeable Battery Compatible, 25A-VHK Series

                                                      Open/close valve SD

                                                      Open/close valve SF

                                                      Open/Close Valve SH/SJ

                                                      On-off valve SK/SL

                                                      CADCAD
                                                      • 2D / 3D
                                                      • 2D / 3D
                                                      • 2D / 3D
                                                      • 2D / 3D
                                                      • 2D / 3D
                                                      • 2D / 3D
                                                      • 2D
                                                      From

                                                      117,093 VND

                                                      283,420 VND

                                                      438,176 VND

                                                      2,264,093 VND

                                                      237,600 VND

                                                      480,305 VND

                                                      466,619 VND

                                                      429,735 VND

                                                      509,976 VND

                                                      Days to ShipSố ngày giao hàng Same day or more Same day or more 12 Day(s) or more 4 Day(s) or more Same day or more Same day or more 6 Day(s) or more 4 Day(s) or more 15 Day(s) or more 6 Day(s) or more 6 Day(s) or more 6 Day(s) or more 6 Day(s) or more
                                                      Connecting Tube DiameterØ4 / Ø6 / Ø8 / Ø10 / Ø12-Ø4 / Ø6 / Ø8 / Ø10 / Ø12Ø6 / Ø8 / Ø10 / Ø12Ø6 / Ø8 / Ø10 / Ø12---Ø4 / Ø6----
                                                      Number of Ports2-Port / 3-Port4-Port2-Port / 3-Port2-Port2-Port / 3-Port3-Port3-Port4-Port2-Port / 3-Port2-Port2-Port2-Port / 3-Port2-Port / 3-Port
                                                      Switching OperationKnobManual LeverManual LeverKnobKnobManual LeverOthersManual LeverKnobKnobKnobKnobKnob
                                                      Effective Sectional Area(mm2)1.48 ~ 15.6810.15 ~ 276.752.58 ~ 15.68--22.99 ~ 101.41140262.58 ~ 6.46----
                                                      Main Body ShapeOne-Touch Fitting TypeBlock Horizontal TypeOne-Touch Fitting TypeOne-Touch Fitting TypeOne-Touch Fitting TypeOthersPin ShapeBlock Horizontal TypeOne-Touch Fitting TypeOthersOthersOne-Touch Fitting Type-
                                                      Pipe Port TypeM / Rc (R) / One-Touch PlumbingRc (R) / NPT / GRc (R) / One-Touch PlumbingOne-Touch PlumbingRc (R) / One-Touch PlumbingRc (R) / NPT / GRc (R)Rc (R)One-Touch Plumbing----
                                                      Number of Switching Positions2-Position Normally Closed3-Position Closed Center / 3-Position Exhaust Center / Others2-Position Normally Closed / 2-Position Exhaust2-Position Normally Open2-Position Normally Closed2-Position Normally Closed2-Position Normally Closed3-Position Closed Center2-Position Normally Closed----
                                                      Plumbing Thread NominalM5 / 1/8 / 1/4 / 3/8 / 1/21/4 / 3/8 / 1/2 / 3/4 / 11/8 / 1/4 / 3/8 / 1/2-1/8 / 1/4 / 3/81/4 / 3/8 / 1/2 / 3/41/21/4 / 3/8 / 1/2-----
                                                      Plumbing Type and DirectionDirect Side SurfaceDirect Side SurfaceDirect Side SurfaceDirect Side SurfaceDirect Side SurfaceDirect Side SurfaceDirect Side SurfaceDirect Side SurfaceDirect Side SurfaceDirect Side SurfaceDirect Side SurfaceDirect Side SurfaceDirect Side Surface
                                                      Effective Sectional Area【classification】(mm2)5 or Less ~ ~20~15 ~ ~905 or Less ~ ~20--~30 ~ ~200~200~305 or Less ~ ~10----
                                                      How to MountSide / BottomBottom / Panel MountingSide / BottomSideSideBottomSideBottomSide / BottomSideSideSideSide

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                                                      1. 1

                                                      Application example related to this categoryVí dụ ứng dụng liên quan đến danh mục này

                                                      Related Categories to Hand ValvesDanh mục liên quan đến Hand Valves

                                                      FAQ Hand Valves

                                                      Question: What is a hand valve and its functions?
                                                      Answer: A hand valve is a manually operated device used to control the flow of fluid (liquids or gases) in a system. It consists of a handle or lever that, when turned, adjusts the position of an internal mechanism to either open or close the valve. Hand valves serve to regulate fluid flow, isolate sections of a pipeline for maintenance, and control pressure. They find application in various industries such as plumbing and industrial processes.
                                                      Question: When should you use the hand valve?
                                                      Answer: Use a hand valve when manual control of fluid flow is necessary. It's employed to start, stop, or adjust flow rates in systems requiring human intervention, such as emergencies, maintenance, or precise adjustments. Hand valves are useful when automation isn't feasible, during equipment servicing, or when immediate response to changes is needed. They offer a simple and reliable means of flow regulation in various industries.
                                                      Question: What are the advantages and disadvatages of hand valves / manual valves?
                                                      Answer: Advantages of hand valves (manual valves) include simplicity, reliability, and cost-effectiveness. They offer precise control and immediate response during emergencies or maintenance, making them suitable for small-scale applications. However, they can be slower to operate compared to automated valves, require physical presence for adjustments, and might not be suitable for large-scale or continuous processes. Additionally, potential human error in operation and limited remote control are notable disadvantages.
                                                      Question: What are the common materials used for valves?
                                                      Answer: Hand valves are commonly constructed from materials such as brass, stainless steel, cast iron, bronze, and plastic (such as PVC or CPVC). The choice of material depends on factors like the type of fluid being handled, pressure requirements, temperature conditions, and corrosion resistance. These materials ensure durability and compatibility with various applications across industries like plumbing, industrial processes, and water treatment.