A brass gate valve is a multi-turn shut-off valve designed to isolate fluid flow in piping systems. Unlike a ball valve, which uses a quarter-turn operation, a gate valve raises and lowers a gate to open or close the flow passage. This design makes it suitable for applications where dependable full-open or full-closed isolation is required.
The 200 WOG brass gate valve configuration is commonly specified for compatible water, oil and gas service. A brass body, non-rising stem, solid wedge and female NPT threaded ends provide a practical combination of mechanical strength, compact installation and reliable shut-off performance.
For plumbing contractors, distributors and industrial buyers, the key selection factors are not simply valve size and price. Pressure rating, thread standard, material, temperature, media compatibility, sealing construction and required certifications should all be confirmed before ordering.
| Specification | Product Information |
|---|---|
| Product | Brass Gate Valve |
| Valve Type | Gate Valve / Shut-Off Valve |
| Pressure Rating | 200 WOG |
| Working Pressure | 200 PSI |
| Connection | Female Threaded |
| Thread Standard | NPT / ANSI B1.20.1 |
| Stem Design | Non-Rising Stem |
| Gate Design | Solid Wedge |
| Body Material | Brass |
| Bonnet Material | Brass |
| Stem Material | Brass |
| Packing | PTFE or specified sealing material |
| Handle | Handwheel |
| Flow Direction | Bi-Directional |
| Main Media | Water, Oil and Compatible Fluids |
| Application | Plumbing, Water Supply, HVAC, Irrigation, Industrial Piping |
| Sizes | Multiple Sizes Available |
Brass is widely used for compact shut-off valves because it combines mechanical strength, machinability and good corrosion resistance in many general water-service environments.
The body is the primary pressure-containing component, so material selection should be matched to the operating medium, pressure and temperature.
For demanding applications, buyers should confirm the exact brass alloy and wetted-material specifications rather than relying only on the general term “brass.”
The stem and gate are critical operating components because they transfer handwheel movement into gate movement.
A properly manufactured stem should maintain dimensional consistency and sufficient mechanical strength for repeated operation.
Depending on the valve design, internal components may use brass, bronze, stainless steel or other materials. The exact material combination should be confirmed in the manufacturer's technical datasheet.
Sealing materials affect both valve performance and application compatibility.
PTFE, Buna-N and other elastomers or packing materials may be used depending on the valve construction.
When purchasing for chemical, potable-water or gas applications, always verify the complete wetted-material and sealing-material specification.
Female NPT threaded ends are widely used in North American plumbing and industrial piping systems.
For a threaded brass gate valve, correct thread matching is essential. NPT threads should be connected with compatible NPT fittings and pipes.
Do not assume that NPT and BSP threads are interchangeable. They use different thread standards and should be specified correctly at the quotation stage.
The ANSI B1.20.1 standard is commonly referenced for NPT pipe threads, and comparable brass gate valve products from KVC and Jomar specify threaded connections to this standard.
Threaded connections can simplify installation and removal without welding equipment.
This makes them useful for:
For projects outside North America, confirm whether NPT, BSPT or BSPP is required before purchasing.
Brass provides a strong and practical material option for plumbing and fluid-control applications. It offers good corrosion resistance in many water-service environments and provides the mechanical strength required for repeated installation and operation.
Brass construction also makes the valve suitable for a wide range of residential, commercial and light industrial piping systems.
The non-rising stem remains within the valve body as the gate moves.
This makes the design useful where vertical clearance is limited. It can also provide a cleaner installation in compact mechanical rooms, utility areas, plumbing systems and equipment skids.
For projects where installation space is restricted, a non-rising stem brass gate valve can be a practical alternative to a rising-stem design.
Gate valves are primarily designed for isolation.
When fully open, the gate is lifted away from the flow passage. When fully closed, it blocks the flow.
A gate valve should generally not be selected as a continuous throttling valve, because partially open operation can increase wear and create undesirable flow conditions.
The main advantage of a brass gate valve is straightforward: reliable manual isolation in a compact threaded valve design.
Compared with larger industrial flanged gate valves, threaded brass gate valves are easier to handle and install in small- and medium-diameter piping.
Compared with ball valves, gate valves use a multi-turn mechanism and are traditionally selected for full-open/full-closed isolation.
| Factor | Brass Gate Valve | Brass Ball Valve |
| Operating method | Multi-turn | Quarter-turn |
| Shut-off speed | Slower | Fast |
| Main function | Isolation | Isolation |
| Flow control | Not recommended for throttling | Generally used for on/off |
| Installation | Compact threaded design | Compact threaded design |
| Typical use | Water, plumbing, irrigation, general piping | Water, plumbing, gas and equipment isolation |
| Best advantage | Traditional isolation design | Fast operation |
If rapid emergency shut-off is important, a ball valve may be more convenient.
If the project specifically requires a gate valve configuration or traditional multi-turn isolation, a brass gate valve can be the better fit.
Brass gate valves are commonly used as manual isolation points in water supply systems.
They can be installed upstream or downstream of equipment to allow sections of the piping system to be isolated for maintenance.
Threaded brass gate valves are suitable for compatible plumbing installations where a manual shut-off point is required.
For potable-water systems, buyers should verify whether the exact valve carries the required local drinking-water certification.
In HVAC piping, valves can be used to isolate compatible water circuits, equipment branches and maintenance sections.
The valve's pressure and temperature rating must be suitable for the actual system.
Irrigation systems often require multiple isolation points to divide pipelines into manageable sections.
A threaded brass gate valve can provide a durable manual shut-off solution for compatible water systems.
For compatible water, oil and other approved media, brass gate valves can be used in general industrial piping and equipment connections.
Chemical compatibility should always be confirmed before selecting the valve for aggressive fluids.
A reliable brass gate valve requires consistent control of body dimensions, thread accuracy, internal components and sealing surfaces.
Brass material is selected according to the required product specification and manufacturing process.
The valve body may be manufactured through forging, casting or another approved forming process, depending on the product design.
Critical sealing and connection surfaces are machined to achieve dimensional consistency.
CNC machining is particularly important for NPT threads, stem interfaces, bonnet connections and sealing surfaces.
Female threaded ends are machined according to the specified thread standard.
Thread accuracy directly affects installation compatibility and sealing performance.
The body, bonnet, stem, gate, packing, handwheel and other components are assembled according to the product design.
Finished valves are inspected for dimensions, appearance, thread quality, operation and leakage performance.
Recommended quality-control checkpoints include:
Specify the nominal pipe size, such as 1/2", 3/4", 1", 1-1/4", 2" or other required sizes.
Confirm NPT, BSPT, BSPP or another connection standard.
Confirm whether the application requires 125 WSP, 200 WOG or another pressure rating.
Pressure capability may vary with temperature, so the manufacturer's pressure-temperature data should be checked.
Specify water, oil, gas or another medium so material and sealing compatibility can be reviewed.
A:A brass gate valve is mainly used to start or stop fluid flow in a piping system. It is designed primarily for full-open or full-closed isolation and is commonly used in water supply, plumbing, HVAC, irrigation and compatible industrial applications.
A:200 WOG is a commonly used valve-service designation referring to water, oil and gas service under specified conditions. Many commercial brass gate valves identify 200 WOG together with a 200 PSI working-pressure rating. The actual pressure-temperature limits must be confirmed from the manufacturer's documentation.
A:Not necessarily. Valve pressure ratings can change with temperature and material. Buyers should always use the manufacturer's pressure-temperature rating rather than assuming that the nominal WOG number applies at every temperature.
A:A non-rising stem design keeps the stem within the valve body as the gate moves. This can reduce the vertical space required above the valve and is useful in compact installations.
A:No. NPT and BSP are different thread systems. They should not be treated as interchangeable. Always confirm the required thread standard before placing an order.
A:Only when the specific valve is approved and rated for the intended gas service. A general “WOG” marking should not automatically be interpreted as approval for every type of gas, pressure or installation environment.
A:Some brass gate valves are manufactured and certified for potable-water applications, while others are not. If the product is intended for drinking water, confirm the applicable certification and material requirements for the destination market.
A：Gate valves are generally intended for isolation rather than continuous throttling. For applications requiring frequent flow regulation, a valve specifically designed for control service may be more appropriate.
A brass gate valve may look simple, but several components determine its actual performance.
Thread accuracy affects installation.
Stem and gate materials affect mechanical durability.
Packing and sealing materials affect leakage performance.
Body material affects pressure capability and media compatibility.
Pressure-temperature ratings determine whether the valve is suitable for the actual operating environment.
Send us your valve size, pressure rating, thread standard, media and quantity requirements to receive a tailored brass gate valve quotation.
