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China GGG50 PN16 Soft Seal Non Rising Stem Gate Valve Manufacturer, Manufacturers
Product Description
It is used as a cutoff and adjusting equipment for the various water supply and drainage pipeline in building, chemical, medicine, textile, ship and other industries. Zhongfa valve can offer OEM & ODM gate valves and parts in China. Zhongfa valve's philosophy is to seek for high quality products with optimal service with the most economical price. All valve products are tested two times before shipping to ensure the quality of the product. Welcome to visit our factories. We will show the craftsmanship of the valves.
Small Space Occupation
Compared with the open stem gate valve, the concealed stem gate valve stem only moves inside the valve body and does not require additional space above the valve, making it ideal for installations with limited space.
Lower Cost
Ductile iron gate valves are generally more cost-effective than rising stem gate valves. The simpler design and structure of concealed stem valves effectively reduces manufacturing costs.
Underground Application
Because the stem of the concealed stem gate valve is not exposed to the air, it is ideally suited for underground applications, such as water distribution systems and subterranean pipelines.
Low Maintenance
Without a rising stem exposed outside the valve body, there are fewer moving components requiring maintenance or lubrication, significantly reducing routine upkeep needs.
Each product undergoes strict appearance, material, air tightness, pressure, and shell testing before leaving the factory; unqualified products are resolutely not allowed to leave the factory.
Technical Specifications
| Size, Pressure Rating & Standard | |
|---|---|
| Size | DN40-DN1200 |
| Pressure Rating | PN10, PN16, CL150 |
| Face to Face STD | BS5163, DIN3202 F4, API609 |
| Connection STD | BS 4504 PN6/PN10/PN16, DIN2501 PN6/PN10/PN16, ISO 7005 PN6/PN10/PN16, JIS 5K/10K/16K, ASME B16.1 125LB, ASME B16.1 150LB, AS 2129 Table D and E |
| Upper Flange STD | ISO 5211 |
| Material Specifications | |
| Body | Cast Iron (GG25), Ductile Iron (GGG40/50) |
| Disc | Cast Iron (GG25), Ductile Iron (GGG40/50) |
| Stem / Shaft | Stainless Steel 304 (SS304/316/410/420) |
| Seat | CF8/CF8M + EPDM |
| Bushing | PTFE, Bronze |
| O Ring | NBR, EPDM, FKM |
| Actuator Options | Gear Box, Electric Actuator, Pneumatic Actuator |
Product Gallery
Frequently Asked Questions
What are the primary advantages of concealed stem gate valves over rising stem types?
Concealed stem gate valves keep the stem enclosed within the valve body. This compact design requires less overhead space, offers lower manufacturing costs, minimizes exposure to external corrosive elements, and reduces long-term maintenance needs.
Are these valves suitable for buried or underground installations?
Yes, because the stem operation remains inside the valve structure and is protected from external soil and atmospheric exposure, concealed stem gate valves are ideal for underground pipeline setups and municipal water distribution networks.
What testing procedures do the valves undergo before shipment?
Every product is tested twice prior to dispatch, undergoing comprehensive evaluations including visual appearance inspection, material integrity checks, air tightness verification, hydraulic pressure testing, and shell durability assessments.
Which standard dimensions and connection types are available?
Valves are available from DN40 through DN1200 across PN10, PN16, and Class 150 pressure ratings. Connection standards comply with major global norms including BS 4504, DIN 2501, ISO 7005, JIS, ASME B16.1, and AS 2129.
Can Zhongfa Valve provide OEM and customized manufacturing?
Yes, Zhongfa Valve provides complete OEM and ODM solutions, supporting custom dimensions, material combinations (such as ductile iron, cast iron, and specific stainless steel trims), as well as manual, pneumatic, or electric actuator configurations.
