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Manufactured by Suzhou Kizi Valve Co., Ltd., our NPT End Thread Gate Valve is a high-reliability flow control solution designed for medium on-off control in low-to-medium pressure industrial and municipal pipeline systems. Built in strict compliance with ASME B16.34 design standards and tested to API598 specifications, this valve features precision-machined threaded ends compatible with NPT, BSPT, RC, and G thread standards, delivering a secure, leak-free connection for rapid on-site installation.
Available in standard sizes from 1/2” to 2”, a 200WOG pressure rating, and a working temperature range of -20℃ to 180℃, our thread gate valve for water distribution is constructed from premium CF8, CF8M stainless steel, WCB carbon steel, and brass, with optional seal materials including graphite, PTFE, and VITON to adapt to diverse media. The valve’s closing mechanism uses a plug-shaped disc that moves linearly along the fluid centerline, creating a tight, bubble-tight seal between the disc and seat when closed, preventing media backflow and ensuring reliable shutoff. With a straight-through media channel and minimal flow resistance, this valve is optimized for applications requiring frequent opening and closing, with an operating time just 1/6 that of traditional gate valves for fast, efficient operation.
Our NPT threaded gate valve features precision-engineered internal and external thread options, eliminating the need for complex flange welding or specialized installation equipment. The standardized thread design ensures a tight, secure fit with standard pipeline threads, enabling fast, hassle-free installation in tight spaces and remote job sites, reducing on-site labor costs and project timelines.
The valve’s precision-machined sealing surfaces, combined with high-quality stem packing and gaskets, deliver exceptional leak-free performance in both open and closed positions. The rigid, corrosion-resistant body and internal components resist wear from frequent operation, while non-rising and rising stem options accommodate different installation and operation requirements. Every valve undergoes rigorous pressure and leak testing to API598 standards, ensuring long-term reliability even in continuous-use environments.
With a straight-through internal flow channel, our 200WOG thread gate valve allows media to flow linearly through the valve body with almost no turbulence, resulting in extremely low flow resistance and minimal pressure drop across the valve. This design maximizes system flow efficiency, while the fast-acting stem design reduces opening and closing time to just 1/6 that of traditional gate valves, making it ideal for applications requiring frequent on-off operation.
Designed and manufactured to meet ASME B16.34 design standards, with thread ends compliant with global industry specifications, this valve is compatible with water, oil, gas, steam, and other non-corrosive and mildly corrosive media. It is available in multiple material configurations to suit diverse operating environments, from municipal water systems to industrial processing plants.
Design Standard: ASME B16.34
Threaded End: NPT / BSPT / RC / G
Inspection and Testing: API598
Size | Pressure | Temperature | Suitable Medium | Features |
1/2”~2” | 200WOG | -20-180℃ | Water,Oil,Gas,Steam. | Simple construction Easy operation |
09 | Hand wheel | Ductile Iron | Ductile Iron |
08 | Gland | 304 | 304 |
07 | Gland Flang | CF8 | PTFE |
06 | Packing | Graphite | VITON |
05 | Gasket | 316+Graphite | PTFE |
04 | Bonnet | CF8 | CF8M |
03 | Stem | 304 | 316 |
02 | Body | CF8 | CF8M |
01 | Wedge | CF8 | CF8M |
NO. | Part Name | Material | |
ASME 200PSI | ||
NPS | L | G |
1/2" | 53 | 15 |
3/4" | 58 | 20 |
1" | 64 | 25 |
1-1/4" | 72 | 32 |
1-1/2" | 75 | 40 |
2" | 90 | 50 |
Our stainless steel thread gate valve is the preferred choice for municipal water utilities, commercial building contractors, HVAC system integrators, fire protection system installers, and industrial water treatment facility operators. It is widely used in applications including:
Municipal water supply and distribution pipeline on-off control
Commercial and residential building HVAC and heating system flow regulation
Fire protection pipeline isolation and emergency shutoff
Industrial water treatment plant media flow control
Low-pressure oil and gas transmission pipeline shutoff
Steam system auxiliary pipeline control in industrial facilities
Thread gate valve
1) Design Standard: ASME B16.34
2) Threaded End: NPT.BSPT.RC.G
3) Size: 1/2"-2"
4) Pressure: 200WOG
5) Temperature: 180℃
6) Materials: Carbon steel,Stainless steel
7) Suitable Medium: Water, Oil, Gas, Steam
We offer a full range of global standard thread types including NPT, BSPT, RC, and G, ensuring compatibility with pipeline systems across North America, Europe, Asia, and other global regions.
Our standard thread gate valve is available in sizes from 1/2” to 2”, with a 200WOG pressure rating, suitable for low-to-medium pressure pipeline systems. Custom sizes from 1/4” to 4” are also available upon request to meet specialized project requirements.
The valve body and internal components are available in CF8 (304) stainless steel, CF8M (316) stainless steel, WCB carbon steel, and brass. Seal and gasket materials include graphite, PTFE, and VITON, to suit different media and temperature requirements.
This valve is optimized for low-to-medium pressure environments requiring frequent opening and closing, with a working temperature range of -20℃ to 180℃. It is ideal for water distribution, HVAC, fire protection, water treatment, and low-pressure industrial fluid systems.
