The gate valve is the most widely used type of valve in various industries. It features a gate-like disk that moves perpendicular to the flow direction, either opening or closing the flow. Gate valves are primarily used as stop valves, providing full-bore, straight-through flow when fully open, with minimal pressure loss. They are suitable for applications where the valve remains fully open or fully closed and not for modulation or throttling. Attempting to throttle a gate valve can lead to issues such as vibration, chattering, and potential damage to the seating surfaces, as well as erosive effects on the disk due to wire drawing.

Key features and benefits of Gate Valves from Actuation Valve.

Key Features

A key feature of a gate valve is its ability to provide a tight and reliable shut-off when fully closed. Gate valves are designed to create a seal by positioning a gate or wedge perpendicular to the flow direction, effectively blocking the passage of fluid. This feature makes gate valves particularly suitable for applications where preventing leakage and ensuring a secure shut-off is critical.

Key Features

Agricultural slurry tanker valves are specialised parts created for incorporation into agricultural machinery, specifically slurry tankers. These valves assume a vital function in governing the flow and discharge of slurry, a blend of liquid manure and water employed as a farming fertiliser. Engineered for robust applications, agricultural slurry tanker valves have established a reputation for their dependability and longevity. They facilitate meticulous control over slurry release, aiding farmers in the efficient dispersion of nutrients across their fields. These valves are indispensable for ensuring the effective operation of slurry tankers, empowering farmers to maximise the utilisation of organic fertilisers in agriculture.

Size Range:	4" to 8"
Body Materials:	Brass
Body Type:	Standard Tanker Gate Valve, Tanker Gate Valve with Hydraulic Jack, Lever Gate Valve
Applications:	Farming, Agricultural
Pressure Ratings:	4 Bar, 3 Bar, 2.5 Bar, 1.5 Bar
End Connections:	AGRI Standard Square Flanged x Threaded BSP, AGRI Standard Square Flanged

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Actuation Valve provides a selection of Gate Valves designed to meet the requirements of both industrial and plumbing applications. Notably, the Brass Gate Valve - PN20 - WRAS Approved is crafted from brass, features BSPT threading, holds WRAS approval for sizes ranging from ¼” to 2”, has a PN20 rating, and can function effectively within a temperature range of -20°C. Another available option is the Brass Gate Valve - Class 150 - NPT, which carries a CL150 rating, operates efficiently within a temperature span from -20°C to 120°C, and incorporates NPT threading. Additionally, the CR Brass Gate Valve, in compliance with BS5154, is offered in a range of sizes varying from 15mm to 54mm, with material options including brass and gunmetal. These gate valves are recognised for their high quality and are employed in diverse industries to regulate the flow of fluids while adhering to industry standards.

Size Range:	1/4" to 4"
Body Materials:	Brass
Body Style:	Standard Gate Valve
Applications:	Potable/Waste Water, Cooling Systems, Oil, Gases, Air
Pressure Rating:	PN20, CL150
End Connections:	Screwed NPT, Screwed BSPT

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Bronze gate valves play a crucial role in plumbing and fluid control systems, celebrated for their dependability and long-lasting performance. Typically crafted from bronze, a copper-based alloy, these valves employ a gate mechanism that can be maneuvered up or down to manage fluid flow within pipes. Thanks to bronze's natural resistance to corrosion, these gate valves excel in water systems and various low-pressure conditions. They are often available in flanged or threaded configurations, simplifying installation and maintenance. Additionally, their non-rising stem design maintains a consistent valve length, making them space-efficient. Bronze gate valves are highly regarded for their efficiency in fluid flow regulation, particularly in scenarios demanding reliable shut-off capabilities, including residential plumbing and industrial applications.

Size Range:	1/4" to 6"
Body Materials:	Bronze, Brass
Body Types:	Lever Gate Valve, Standard Gate Valve
Applications:	Potable/Waste Water, Cooling Systems, Oil, Gases, Air
Pressure Rating:	PN20, PN16
End Connections:	Screwed BSPP

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Cast Iron Gate Valves, constructed from high-quality cast iron, are essential components for controlling the flow of fluids in various applications. These valves are known for their robustness and durability, making them ideal for both high and low-pressure systems. Featuring a wedge-shaped gate that provides a tight seal, they offer precise control of fluid flow, minimizing leaks and ensuring efficient operation. With a reputation for reliability and resilience, Cast Iron Gate Valves are a popular choice across industrial, plumbing, and construction sectors, offering a dependable solution for fluid control needs.

Size Range:	1 1/2" to 12"
Temperature Range:	-10°C to 120°C
Pressure Rating:	PN16
End Connection:	Flanged PN16
Body Materials:	Cast Iron Body, Cast Brass Seat
Body Types:	Stainless Steel Stem, Inside Screw, Non-rising Stem
Applications:	Potable/Waste Water, Cooling Systems, Oil, Gases, Air

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Ductile Iron Gate Valves, known for their robust construction and dependable performance, are a vital component in any plumbing or industrial system. Crafted from high-quality ductile iron, these valves offer exceptional strength and resistance to corrosion, ensuring longevity even in harsh conditions. Their precise control and leak-free operation make them a preferred choice for controlling the flow of liquids and gases. With various sizes available, these gate valves are suitable for a wide range of applications, and their ability to withstand high pressures and extreme temperatures adds to their versatility. Whether in plumbing, industrial, or construction settings, Ductile Iron Gate Valves stand as a reliable solution for fluid control and are designed to meet the highest industry standards.

Size Range:	2" to 12"
Temperature Range:	-20°C to 230°C
Pressure Ratings:	PN16, 7 Bar, 12.8 Bar
End Connections:	Flanged PN16, Flanged BS10 Table E, Flanged BS10 Table D, Flanged BS EN 1092-2 PN16,
Body Materials:	Epoxy Coated Ductile Iron Body, Ductile Iron Epoxy Coated Body, Cast Iron Body
Applications:	Potable/Waste Water, Cooling Systems, Oil, Gases, Air

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WRAS approval is a mandatory requirement for any product that carries or receives drinking water from the public mains in the UK. It provides proof that our products have been tested by an independent body to ensure they meet all relevant standards and requirements as set out by Government. TTV’s resilient seated Gate Valve is available in sizes ranging from DN50 to DN600 offering a wide range of suitable applications and services including Potable Water, Waste Water, Seawater, Air Conditioning, Heating, Irrigation and Fire Fighting.

From £85.00

The Wras Approved Gate Valve consists of a GJS 400-15 Ductile Iron body in compliance with EN1074 to ensure the highest standard of efficiency throughout the product life. Valve wedges are constructed in Ductile Iron with a vulcanised, durable rubber coating capable of operation in temperatures up to 120°C. Sealing areas of the body reman flat offering an unrestricted flow path and ensure a 100% leak tightness.

Size Range:	DN32-DN1600 (1 1/4"-64")
Body Materials:	GJS500-7 Ductile Iron Rilsan Coated
Disc Materials:	CF8M Stainless Steel
Seat Materials:	EPDM, NBR Buna, Hypalon, Viton, Silicone, High Temperature, Polyisoprene, Epichloridine
Actuated Function:	Lever Operated, Hand Wheel / Gear Box Operated, Extended / Extension Chain Wheel
Applications:	Potable/Waste Water, Cooling Systems, Oil, Gases, Air

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Flexible Wedge Disk

The wedge type disk can also be obtained in a flexible design, developed primarily to overcome sticking on high-temperature services subject to great temperature changes. In one form the single piece construction of the disk is maintained but the two seating faces are separate from each other except for a short connecting axle or spud at the centre of the disk. In this way, each disk face is permitted a certain degree of independent movement which, besides eliminating the possibility of sticking in the closed position, facilitates tightness on both the upstream and downstream sides of the disk over a wide range of pressures and temperatures.

There are three basic designs of stem arrangements Inside screw (rising stem), Inside screw (non-rising stem) & Outside screw (rising stem) The first mentioned is relatively the least expensive and is most commonly found on the smaller sizes of valves. A useful feature is that the position of the stem serves to indicate the position of the disk. Because the stem threads are inside the valve body and so open to attack by the service fluid, inside screw valves are not usually used for fluids having corrosive or erosive properties or for high-temperature services where consequent expansion and contraction may cause binding of the threads. In the case of the inside screw, non-rising stem design, the stem does not move axially but merely rotates. This arrangement is particularly useful where headroom is limited. Also, the elimination of the up and down movement of the stem reduces the amount of wear on the gland packing. On the outside screw, rising stem valve, the stem threads are situated outside the valve body and so are not subjected to possible effects of the pipeline fluid. The stem threads are accessible for lubrication and the position of the stem provides an indication of the amount of valve opening. Adequate headroom is required for the rising stem, for which some form of protection should be arranged to guard against possible damage.

Soft sealing is a recent development in which plastic or synthetic rubber rings are inserted into the faces of the disk or body seat rings to provide soft sealing backed up by contact of the metal to metal faces. Soft seals provide improved sealing characteristics over a very useful range of temperatures for a great variety of fluids. The resilience of the seal gives good recovery from deformation by accumulated 'dirt' and solid particles in the service fluid. Another asset is the reduction in effort required to operate the valve. For block and bleed control, sometimes known as double blocking, the use of soft seals can secure the requirement for positive tight closure on both sides of the disk with the aid of only one valve. This may avoid the possible use of two conventional valves to obtain the same results. Another development in soft sealing offering positive tight shut-off with high resilience is the wedge gate valve in which a facing of synthetic rubber is bonded to the disk casting. Both upstream and downstream faces and also the lower periphery of the disk are covered with the rubber. Sealing around the upper two-thirds of the disk is axial by wedge action while round the lower onethird of the disk the seal is achieved by radial contact between the rubber covered lower part of the disk and the base of the body.

A gate valve is a type of valve used to control the flow of fluids (liquid or gas) within a pipeline or system. It is primarily designed to either fully open or fully close the flow, and it is not typically used for regulating the rate of flow like a globe valve or a ball valve.

One advantage of a gate valve is its ability to provide a tight seal, making it ideal for applications where a complete shut-off of fluid flow is required. When fully closed, the gate valve creates a secure and leak-proof seal, preventing the passage of fluids in either direction.

To open a gate valve, you typically turn the valve handle or operating mechanism in a counterclockwise direction (to the left). This action raises the internal gate or wedge to create an unobstructed pathway for fluid flow. Conversely, turning the handle in a clockwise direction (to the right) closes the valve by lowering the gate, obstructing the flow and sealing the passage.

The most commonly used type of gate valve is the "wedge gate valve." Wedge gate valves are widely employed in various industries due to their robust design, reliable performance, and the ability to provide a tight seal. They have a solid, flat gate or wedge-shaped disc that moves perpendicular to the flow direction to either fully open or fully close the valve.

Gate valves, when fully open, do not inherently reduce pressure. However, they can introduce some pressure drop due to the flow obstruction created by the gate or wedge. The extent of pressure drop or flow restriction depends on the design of the gate valve, including factors like the shape of the gate and the clearance around it.

Yes, gate valves can restrict flow, particularly when they are partially open. Gate valves are primarily designed as on/off valves, but they can be used to control flow to some extent. When a gate valve is partially closed, the gate or wedge inside the valve partially obstructs the flow path, creating a restriction in the pipeline. The extent of flow restriction depends on how far the gate is lowered into the flow path.

There are several alternatives to gate valves, each with its own characteristics and advantages. The choice of an alternative valve depends on the specific requirements of the application. At Actuation Valve we offer ranges of Ball Valves, Globe Valves, Butterfly Valves, & Check Valves, e.g.

To install a gate valve effectively, begin by preparing a clean work area and choosing the right valve for the application. Inspect the valve for defects and ensure the flange faces are clean and aligned properly. Secure the valve in place by bolting it to the flanges using the correct torque specifications, following a crisscross pattern. Conduct a pressure test if necessary and check for smooth valve operation. Proper alignment of the connected piping is essential.

Gate valves are not typically used for regulating water pressure. Their primary function is to provide on/off control of fluid flow. While you can partially close a gate valve to reduce the flow of water, it is not an effective or precise means of regulating water pressure. If you need to regulate water pressure in a plumbing system, it's better to use pressure-reducing valves or pressure control valves specifically designed for that purpose.

Yes, Actuation Valve offers sustainable spares and replacement parts for ongoing maintenance schedules.

To stop a gate valve from leaking, first identify the source of the leak, which could be around the valve stem, packing gland, or gate. If the leak is at the stem, try tightening the packing gland nut using a wrench, but avoid over-tightening. If the issue persists, inspect the valve stem for damage and replace it if necessary. Additionally, consider replacing the packing material, which may require removing the old material and installing new packing. Ensure that there are no obstructions or debris on the gate or valve seat.

Gate Valves

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Wras Approved Ductile Iron TTV Gate Valves Epoxy Coated Potable Water

£82.50

Wras Approved Gate Valve Ductile Iron GJS 400-15 Bolted Bonnet DIN 3202 Vulcansied EPDM Ductile Iron TTV DN0050

£85.00

Wras Approved Gate Valve Ductile Iron GJS 400-15 Bolted Bonnet DIN 3202 Vulcansied EPDM Ductile Iron TTV DN0065

£95.00

Wras Approved Gate Valve Ductile Iron GJS 400-15 Bolted Bonnet DIN 3202 Vulcansied EPDM Ductile Iron TTV DN0080

£112.50

Wras Approved Gate Valve Ductile Iron GJS 400-15 Bolted Bonnet DIN 3202 Vulcanised EPDM Ductile Iron TTV DN0100

£142.50

Wras Approved Gate Valve Ductile Iron GJS 400-15 Bolted Bonnet DIN 3202 Vulcansied EPDM Ductile Iron TTV DN0125

£205.00

Wras Approved Gate Valve Ductile Iron GJS 400-15 Bolted Bonnet DIN 3202 Vulcansied EPDM Ductile Iron TTV DN0150

£260.00

Wras Approved Gate Valve Ductile Iron GJS 400-15 Bolted Bonnet DIN 3202 Vulcansied EPDM Ductile Iron TTV DN0200

£437.50

Wras Approved Gate Valve Ductile Iron GJS 400-15 Bolted Bonnet DIN 3202 Vulcansied EPDM Ductile Iron TTV DN0250

£630.00

Wras Approved Gate Valve Ductile Iron GJS 400-15 Bolted Bonnet DIN 3202 Vulcansied EPDM Ductile Iron TTV DN0300

£892.50

Wras Approved Gate Valve Ductile Iron GJS 400-15 Bolted Bonnet DIN 3202 Vulcansied EPDM Ductile Iron TTV DN0100

£142.50

Fluval Gate Valve Flanged ANSI 150 Bolted Bonnet NACE MRO175 MR0103 AVCH10B02DN0050 Carbon Steel A216 WCB

£241.72

Fluval Gate Valve Flanged ANSI 150 Bolted Bonnet NACE MRO175 MR0103 AVCH10B03DN0080 Carbon Steel A216 WCB

£405.14

Fluval Gate Valve Flanged ANSI 150 Bolted Bonnet NACE MRO175 MR0103 AVCH10B04DN0100 Carbon Steel A216 WCB

£572.58

Fluval Gate Valve Flanged ANSI 150 Bolted Bonnet NACE MRO175 MR0103 AVCH10B06DN0150 Carbon Steel A216 WCB

£965.04

Fluval Gate Valve Flanged ANSI 150 Bolted Bonnet NACE MRO175 MR0103 AVCH10B08DN0200 Carbon Steel A216 WCB

£1374.06

Fluval Gate Valve Flanged ANSI 150 Bolted Bonnet NACE MRO175 MR0103 AVCH10B10DN0250 Carbon Steel A216 WCB

£2136.94

Fluval Gate Valve Flanged ANSI 150 Bolted Bonnet NACE MRO175 MR0103 AVCH10B12DN0300 Carbon Steel A216 WCB

£2517.20

Fluval Gate Valve Flanged ANSI 150 Bolted Bonnet NACE MRO175 MR0103 AVCH10B14GDN0350 Carbon Steel A216 WCB

£4417.80

Fluval Gate Valve Flanged ANSI 150 Bolted Bonnet NACE MRO175 MR0103 AVCH10B16GDN0400 Carbon Steel A216 WCB

£5717.42

Fluval Gate Valve Flanged ANSI 150 Bolted Bonnet NACE MRO175 MR0103 AVCH10B18GDN0450 Carbon Steel A216 WCB

£6962.74

Fluval Gate Valve Flanged ANSI 150 Bolted Bonnet NACE MRO175 MR0103 AVCH10B20GDN0500 Carbon Steel A216 WCB

£7993.50

Fluval Gate Valve Flanged ANSI 150 Bolted Bonnet NACE MRO175 MR0103 AVCH10B24GDN0600 Carbon Steel A216 WCB

£13078.38

Fluval Gate Valve Flanged ANSI 150 Bolted Bonnet NACE MRO175 AVCH10D02DN0050 Carbon Steel A216 WCB

£369.08

Fluval Gate Valve Flanged ANSI 150 Bolted Bonnet NACE MRO175 AVCH10D03DN0080 Carbon Steel A216 WCB

£589.62

Fluval Gate Valve Flanged ANSI 150 Bolted Bonnet NACE MRO175 AVCH10D04DN0100 Carbon Steel A216 WCB

£751.64

Fluval Gate Valve Flanged ANSI 150 Bolted Bonnet NACE MRO175 AVCH10D06DN0150 Carbon Steel A216 WCB

£1141.38

Fluval Gate Valve Flanged ANSI 150 Bolted Bonnet NACE MRO175 AVCH10D08DN0200 Carbon Steel A216 WCB

£1781.62

Fluval Gate Valve Flanged ANSI 150 Bolted Bonnet NACE MRO175 AVCH10D10DN0250 Carbon Steel A216 WCB

£2397.16

Fluval Gate Valve Flanged ANSI 150 Bolted Bonnet NACE MRO175 AVCH10D12DN0300 Carbon Steel A216 WCB

£3335.60

Fluval Gate Valve Flanged ANSI 150 Bolted Bonnet NACE MRO175 AVCHL10D02DN0050 Carbon Steel A216 WCB

£399.22

Fluval Gate Valve Flanged ANSI 150 Bolted Bonnet NACE MRO175 AVCHL10D03DN0080 Carbon Steel A216 WCB

£617.24

Fluval Gate Valve Flanged ANSI 150 Bolted Bonnet NACE MRO175 AVCHL10D04DN0100 Carbon Steel A216 WCB

£870.98

Fluval Gate Valve Flanged ANSI 150 Bolted Bonnet NACE MRO175 AVCHL10D06DN0150 Carbon Steel A216 WCB

£1297.76

Fluval Gate Valve Flanged ANSI 150 Bolted Bonnet NACE MRO175 AVCHL10D08DN0200 Carbon Steel A216 WCB

£2066.58

Fluval Gate Valve Flanged ANSI 150 Bolted Bonnet NACE MRO175 AVCHL10D10DN0250 Carbon Steel A216 WCB

£2924.54

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Of all the many different types of valves available to industry, the gate valve is by far the most widely used. In this valve a gate-like disk is moved at right angles across the line of flow between matching seats in the valve body, thus opening or shutting off the flow. It is intended for duty as a stop valve and in the fully open position provides straight through full bore flow with consequent minimum loss of pressure of the service fluid.

Conventional types of gate valves are generally ideal for services that require infrequent operation and where the disk is kept fully open or fully closed. They are not intended for modulating or throttling purposes. The velocity of flow against a partly opened disk may cause vibration and chattering with possible damage to the seating surfaces and throttling can subject the disk to the erosive effects of wire drawing.

The principal vanauon in the design of gate valves is in the type of sealing element employed and reasonably the valves are often described in terms of the sealing element, e.g. solid wedge, parallel slide, parallel double disk, and split wedge. There are many other types but the designs in most common use are the wedge gate valve and parallel slide valve.

Wedge Gate Valve:
The fluid controlling element in this design of gate valve is a rigid one-piece, wedge-shaped, disk containing no loose parts. The disk is accurately guided in the valve body to ensure that contact between the disk seat faces and body seat faces is limited to only a small portion of the closing and opening movements. Because of the wedge action, tight sealing can be achieved without assistance from the fluid pressure.

Parallel Slide Gate Valve:
The design feature of this valve is a parallel and flexible sealing element containing two half-disks which slide between two corresponding parallel seat faces in the body. A spring is usually contained between the two halves of the disk. This spring has three functions: to provide a flexible closure member, to hold the disk halves in sliding contact with the body seats under zero or near zero pressure so that a wiping action is obtained, and to dampen down any tendency to vibrate of the disk parts. Closure sealing is achieved by the thrust of the line pressure forcing the disk against the seating face on the downstream side of the body and the resultant contact pressure secures fluid tightness. The closure member of a parallel slide valve has a high degree of flexibility, which is particularly useful on services subject to appreciable variations of temperature. Expansions or contractions of working parts can be accommodated without affecting the operation of the valve.

Parallel Double Disk Gate Valve:
This valve has two parallel disk halves which are forced outwards against the body seat faces by means of a spreader or wedge when contact is made with a stop in the bottom of the valve body. The first opening movement releases the disk halves and continued operation raises them clear of the body seat openings.

Split Wedge Gate Valve:
Similar to the parallel double disk valve but the disk is wedge-shaped. Again a spreader device is used to force the disk halves against matching tapered seats in the valve body and the first opening movement releases the disk halves from contact with the body seats.

Gate Valves

Key Features

Key Features

Key Features

Key Features

Agricultural Slurry Tanker Gate Valves

Brass Gate Valves

Bronze Gate Valves

Cast Iron Gate Valves

Ductile Iron Gate Valves

Wras Approved Gate Valves

Wras Approved Gate Valves

Flexible Wedge Disk

Stem Arrangement

Soft Sealing

Frequently Asked Questions

FAQ

Gate Valves

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