DRVZ Silent Check Valve DN125 PN40 Length 300mm stainless steel check valve


The Silent Check Valve is the preferred choice in applications where silent operation and cos
t are major concern.

Its short linear stroke and spring return action combine to close the valve prior to flow reversal which effectively eliminates the shock and water hammer normally associated with the sudden stoppage
of a reverse flow.

Features:
⊙ Professional design
The inner cavity of valve is designed as streamline shape, which can effectively stop the turbulence.
The spherical surface is introduced to form the front of disc and cone contact for the seating couple;
these structures will extremely the shock force of medium and decrease the resistance coefficient
of flow. Thin shell structures is employed when design the diversion component to ensure the laminar
flow and greatly drop the weight. The reasonable open height and cavity space enable the obtaining of
maximum area of flow section. It can avoid occurring of the air chamber; the valve parameter Cv is
improved.
⊙ Excellent proof corrosion characteristics
Internal and external epoxy resin coating.
⊙Reliable hygiene principles
Epoxy resin and rubber comply with hygiene standard, the trim, such as disc, spring, etc., are made
of stainless steel.

Mail part & material
Body, Line: GGG50 with internal and external epoxy resin coating
Disc: GGG50 or casting steel
Guiding stem, Spring: 1Cr17Ni12Mo2Ti, Stainless steel
Guiding bushing: Bronze CuAI10Fe3
Flange washer, O-ring: NBR, EPDM or FPM

Technical Specification
- Nominal diameter:50～350mm
- Nominal pressure:1.0/1.6Mpa
- Strength testing pressure:1.5/2.4Mpa
- Sealing testing pressure:1.1/1.76Mpa

Executive standard

Shanghai KangQuan Valve Co. Ltd. is a specialized valves manufacture, which has 2,500 tons of 

valves output capacity annually. We pay much attention to the quality so our products are superior in 

quality compared with those of other manufacturers. After years of research and development, we have

accumulated a wealth of information and experience in this field. We enjoy a high reputation in dealing 

with both domestic and overseas trading.

Shanghai KangQuan Valve Co. Ltd.  covers an area of  15000 square meters. Our products line includes

various kinds of gate valves, globe valves, ball valves, check valves, cock valves, butterfly valves of , etc., 

up to the international advanced standards of ANSI, API, JIS, DIN, BS and so on . Materials mainly include

carbon steel ,stainless steel ,ductile iron and so on .with hand wheel worm-gear actuator and pneumatic

and electric actuator to be selected ,widely used in the industries of petrochemical, natural gas, metallurgy, 

electric power , pharmaceutical , construction, etc..

With highly qualified professionals and first class service, Shanghai KangQuan Valve Co. Ltd. has

established a highly respected enterprise which has been relied on for years. And we will continuously 

offer customers the most accurate and high quality delivery service possible.

Excellent quality assurance is our sales purpose, 
Competitive price is our sales policy, 
On time product delivery and responsive service is our standard.

Shanghai KangQuan Valve Co. Ltd. hopes to work together with you for a better future. Let’s work 

together building a mutually beneficial relationship that will last for years.