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Stainless Steel Double Disc Wafer Type Check Valve

Stainless Steel Double Disc Wafer Type Check Valve

    Unit Price: 18 USD
    Min. Order: 1 Piece/Pieces
    Packaging: Export Plywood Case
    Transportation: Ocean,Land,Air,Express
    Supply Ability: 10000 ton per year

Product Description

API/DIN Standard Stainless Steel Dual Plate Wafer Type Check Valve

Dual Plate Wafer type Check valve, sometimes people also call them as door valve, its shape like a door. There are two parts of disc, they combine with a spring, when fluid come, they will open in two direction like a door. So spring is a very important part for wafer type check valve. Wafer type check valve, could prevent reverse of fluid of medium. But generally speaking, wafer type check valve can not bear very high pressure, PN16~PN40 is ok. Wafer type check valve is a kind of automatic valve, no need to use handle or gear to control open and close. It is a kind of one way valve, fluid only could flow in one direction. There are three types of wafer check valve, one is swing type, lift type and butterfly type.


Product Name

Stainless Steel Double Disc Wafer Type Check Valve

1. Material

SS304/316/304L/316L ( CF8/CF8M/CF3/CF3M), WCB, WCC, LCB,LCC,WC6,WC9, C5,C12, etc

2. Size

2'~24'' ( DN50~DN600)

3. Thread standard

ISO9001 & CE, TS

4. Type

Wafer Type

5. Working Pressure


6. Applicable standard

API 594, API 6D, standards

7. Working Temp.

-29~425, or according to customer requirements for different industry.

8. Suitable Medium

Water, Natural Gas, Oil and some corrosive liquid

9. Inspection & Testing

According to API598/DIN3230



Delivery Time

15~20 Days


Standard Exporting Plywood Case

Shipping Port

Ningbo/Shanghai, China

Shipping Terms

Exw, FOB, CFR, CIF, etc.

Payment Terms

T/T, Western Union, PayPal, etc.


30% prepayment, 70% balance paid before shipping or against copy of BL

Country of Origin

Wenzhou city, China

Production Capacity

6000 ton/year


10 PCS/size



This is a self acting, non=return, single plate, wafer type swing check valve which provides high quality and reliability within a simplified construction. Available in both carbon steel and stainless steel.


The low inertia disc is designed to open and close under low differential pressure conditions. Also, the short pattern design and straight flow path minimize pressure drop across the valve.


The low weight and short face to face dimensions provide an economical, space-saving solution. Additionally, flange gaskets are typically not required due to the built-in, body seal O-rings.


Soft seats ( PTFE or BUNA) combined with a gravity assisted disc help to ensure a positive shutoff which creates a bubble tight seal that meets or exceeds API 598 leakage requirements.


This valve can be installed between weld neck or slip-on type companion flanges of different standards. This valve can not be installed in a vertical pipeline with downward flow.


The one piece body design eliminates potential leak paths to the environment so there are no body emissions.


Liquid or gas where protection from flow reversal in a pipeline is required.


The Wafer Double Disc Check Valves are constructed from rugged castings that are machined to exacting specifications. Reference individual technical data pages for standard disc, shaft, spring, and elastomer seat.


Wafer Double Disc Check Valves are used in both vertical and horizontal applications. For horizontal flow applications the shaft should be vertically oriented. Contact RST for downward vertical flow installations.

Application standards:

Design ASME B16.5

Design ASME B16.34

Testing API 598

Conform to API594/API6D




Competitive Advantages:

1. 18 months warranty

2. Free sample if interest before orders.

3. Reasonable price to win your market.

4. Factory manufacturer, not trading company, to control every process production.

5. Technology renovation, process improvement, structure optimization and quality improvement.

6. Excellent after-sales service system, providing timely and optimal service, which help you to win the market.

7. Convenient shipping sea port, and standard exporting carton boxes & plywood cases.

8. 100% inspection & testing before delivery.

9. Third party inspection on customer requirement.

10. Offer instruction manual.

double plate door wafer check valve

Material List:


Part Name




ASTM A351 Gr. CF8M



Viton O Ring



ASTM A351 Gr. CF8M



Inconel X-750


Spring Plate

ASTM A182 Gr. F316


Thrust Washer

ASTM A182 Gr. F316


Hinge Pin

ASTM A182 Gr. F316


Stop Pin

ASTM A182 Gr. F316


Locating Piece

ASTM A182 Gr. F316


Lifting Lug

Carbon Steel



Stainless Steel (316)



RST Valve Group CO., Ltd was founded in Wenzhou City with more than 10 years of experience in producing different kinds of industrial valves. It is a high-tech comprehensive valve enterprise with design, research and development, manufacturing, sales and service.

RST VALVE owns more than 100 employees. In our production line, we have CNC machining equipment, grinding machines, assembly machines, welding torches, hydraulic / air testing equipment at our workshop. The annual production capability of the factory can reach 6000 tons. RST Valve is an ISO, CE and TS certified manufacturer with much experience of exporting. It keeps continuous innovation and owns a strong technical force, excellent equipment, complete testing system, and strict management system. Inspection includes raw material inspection, dimensional inspection, processing inspection, chemical testing, physical testing, pressure testing, etc, which guarantee the quality of finished products.

RST VALVE can offer different kinds of industrial valves, including ball valve, gate valve, check valve, globe valve, y strainer, etc. Our products are performed in accordance with national standards of API , ANSI, DIN, JIS, BS and GB and so on. Our various products are widely used in petrochemical industry, petroleum refining, nuclear power, chemical industry, metallurgy as well as mining, medical industry, food industry, national defense, military and urban construction and many Other fields. Moreover, RST Valve accepts Valve OEM, ODM inquiry from customers.

RST Valve products have got great appreciation in a variety of different markets throughout the world. Our goal is [Made In China, Focus on World". RST VALVE is committed to improve our manufacturing practices and product quality and to serve better our customers and partners. RST VALVE forges ahead with broad minds, and warmly welcome domestic and foreign customers to visit and cooperate with our company. Thanks for your trust and support!

Company Info

  • Company Name: RST VALVE GROUP CO.,LTD
  • Representative: LIN CAI YUN
  • Product/Service: Ball Valve , Gate Valve , Globe Valve , Check Valve , Stainless Steel Valves , Y Strainer
  • Capital (Million US $): 132190000RMB
  • Year Established: 2009
  • Total Annual Sales Volume (Million US $): Above US$100 Million
  • Export Percentage: 71% - 80%
  • Total Annual Purchase Volume (Million US $): Below US$1 Million
  • No. of Production Lines: 3
  • No. of R&D Staff: Fewer than 5 People
  • No. of QC Staff: 5 -10 People
  • OEM Services Provided: yes
  • Factory Size (Sq.meters): 5,000-10,000 square meters
  • Factory Location: No.917, Tianzhong Rd, Longwan District, Wenzhou City, 325024, P.R.China.
  • Contact Person: Ms. Miya
  • Tel: +86-0577-85516166
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