Gate Valves

1706 - Zetco Bronze WaterMarked Gate Valve F&F

Series 1706

Zetco Bronze WaterMarked Gate Valve F&F

Size Range: 15mm to 100mm
Temperature Range: -10°C to 99°C
Max. Pressure: 2000 kPa

1736 - Zetco Bronze Gate Valve F&F NPT Threads

Series 1736

Zetco Bronze Gate Valve F&F NPT Threads

Size Range: 10mm to 80mm
Temperature Range: -10°C to 99°C
Max. Pressure: 2000 kPa

1719 - Zetco Bronze WaterMarked PN32 Gate Valve F&F

Series 1719

Zetco Bronze WaterMarked PN32 Gate Valve F&F

Size Range: 6mm to 100mm
Temperature Range: -10°C to 99°C
Max. Pressure: 3200 kPa

1707 - WaterMarked Gate Valve F&F c/w Locking Mechanism

Series 1707

WaterMarked Gate Valve F&F c/w Locking Mechanism

Size Range: 15mm to 100mm
Temperature Range: -46°C to 177°C for lockout device
Max. Pressure: Refer to relevant valve specification sheet

1710 - Zetco Bronze WaterMarked Gate Valve Flanged

Series 1710

Zetco Bronze WaterMarked Gate Valve Flanged

Size Range: 15mm to 100mm
Temperature Range: -10°C to 99°C
Max. Pressure: 1600 kPa

1712 - Zetco Bronze Outside Screw & Yoke Bolted Bonnet Gate Valve Flanged

Series 1712

Zetco Bronze Outside Screw & Yoke Bolted Bonnet Gate Valve Flanged

Size Range: 40mm to 50mm, 80mm to 250mm
Temperature Range: -10°C to 99°C
Max. Pressure: 1600 kPa

1714 - Zetco Bronze WaterMarked Gate Valve F&F c/w Brass Handwheel

Series 1714

Zetco Bronze WaterMarked Gate Valve F&F c/w Brass Handwheel

Size Range: 65mm to 100mm
Temperature Range: -10°C to 99°C
Max. Pressure: 2000 kPa

1715 - Tour & Andersson DZR Brass Tested Gate Valve c/w DZR Brass T Bar

Series 1715

Tour & Andersson DZR Brass Tested Gate Valve c/w DZR Brass T Bar

Size Range: 20mm to 50mm
Temperature Range: -10°C to 99°C
Max. Pressure: 2500 kPa

1716 - Tour & Andersson DZR Brass Tested Gate Valve c/w DZR Brass Key Cap

Series 1716

Tour & Andersson DZR Brass Tested Gate Valve c/w DZR Brass Key Cap

Size Range: 40mm to 50mm
Temperature Range: -10°C to 99°C
Max. Pressure: 2500 kPa

1726 - Zetco Bronze Shouldered Gate Valve

Series 1726

Zetco Bronze Shouldered Gate Valve

Size Range: 50mm
Temperature Range: -10°C to 99°C
Max. Pressure: 1600 kPa

1720 - Zetco WaterMarked Stainless Steel Full Bore Heavy Pattern Gate Valve

Series 1720

Zetco WaterMarked Stainless Steel Full Bore Heavy Pattern Gate Valve

Size Range: 15mm to 80mm
Temperature Range: -20°C to 175°C
Max. Pressure: 4000 kPa

4620 & 4621 - Zetco WaterMarked Stainless Steel Flanged Gate Valve

4620 & 4621

Zetco WaterMarked Stainless Steel Flanged Gate Valve

Size Range: 25mm to 100mm
Max. Pressure at Nominal Temp.: 362 PSI @ 100°F (2500 kPa @ 37°C)

4620 & 4621 - Zetco Stainless Steel Flanged Gate Valve

4620 & 4621

Zetco Stainless Steel Flanged Gate Valve

Size Range: 125mm to 200mm
Max. Pressure at Nominal Temp.: 275 PSI @ 100°F (1900 kPa @ 37°C)

Zetco Gate Valves

Gate valves are commonly used in civil and industrial piping, with a wide range of gas and fluids, where a tight seal is required in a fully closed position.

The gate valve design ensures the minimum flow obstruction and the minimum pressure drop in a fully open position, which makes them ideal for applications that require steady pressures. The operating mechanism ensures a progressive closure of the valve, which is particularly important when the flow of liquids must be blocked rapidly, without damaging the pipeline (water hammer effect). Gate valves are not suitable for the control of the flow (throttling) as the shape of the closing mechanism (wedge) induces turbulence in the flow.

Zetco Valves has an extensive range of gate valves, in a variety of configurations, produced by ISO 9001 certified manufacturers. Copper alloys like brass and bronze are used for potable water applications where the antibacterial property of copper is beneficial. Stainless steel is commonly used where the application requires high pressure, high temperature and resistance to chemical aggression from the fluid or from the environment. Aluminium bronze is also available, upon request, for marine, mining and heavy industrial applications.

The range includes gate valves with sizes from DN15 to DN200, with screwed, bolted or union bonnet and with threaded or flanged connections. Threaded connections include the international ISO 7/1 standard (BSP) and the American ANSI/ASME B1.20.1 (NPT). Flanged connections include the Australian AS 2129 Table D/E/F/H, the American ANSI/ASME B16.5 in class 150 or 300 and the European EN 1092-1 PN16 (DIN).

Zetco Valves can offer a wide range of gate valves with WaterMark certification.

Gate Valve FAQ

Gate valves, also referred to as sluice valves, have a barrier, the 'gate', that lifts out the path of flow. Gate valves were once the most widely used valves in industrial piping systems, however their popularity has now been replaced by ball valves.
A gate valve is operated by turning a handwheel, key cap or other mechanism which acts on a long screw thread to raise and lower the gate. Although a gate valve requires many turns to open and close it fully, the handle takes up a small amount of space compared with a ball valve which requires space for the handle to be turned.
Gate valves are not suitable for variable flow control or throttling as the seating is perpendicular or at right angles to the direction of flow. Repeated movement of the wedge (gate) near the point of closure under high velocity flow, may create a drag on the seating surfaces and causing galling or scoring on the down stream side. A slightly opened edge may cause turbulent flow with vibration and chattering of the wedge.
Gate valves are ideal for maintaining complete shutdown of a line with infrequent opening operations as the handwheel may take some time and effort to completely open the valve. Knife gate valves (with a thin rigid gate) can be used with slurries, fibres and powders that might otherwise accumulate inside a ball valve.