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Dual Plate Wafer Natural Gas Check Valve

Basic Info


Product Description

Dual Plate Wafer Natural Gas Check Valve Product Range
Triple Offset Butterfly Valve TBV-3001   Cast Steel Valves CSV-1001  Wafer Check Valve WCV-2001
DIN Industrial Valves DIV-4001 Floating Ball Valve FBV-5001 Trunnion Ball Valve TRBV-6001
Product Description

Dual Plate Wafer Check Valve
Applicable Standards:
- Wafer Check Valve design according to API 594, API 6D
- Face to face ASME B16.10/API 594
- End Flanges ASME B16.5/ASME B16.47
- Buttwelding ends ASME B16.25
- Inspection and test API 598
Pressure Rating:
- ASME CL,150,300,600,900,1500,2500
Temperature Range:
- -50°C~650°C
Size Range:
- 2’’~60’’
Didtek Dual Plate Wafer Check Valve are manufactured to the latest editionof API Standard 594 and tested to API Standard 598.

Metal Seat Design
Metal seats include a full penetrate

weld overlay of Stainless steel,

Stellite 6 and so on.


Soft Seat Design
Resilient seats are standard and

maintain positive shut-off.
Seats are vulcanized to the body

for maximun secruity.


Thruse Washers
Metal top and bottom thrust washers

reduce friction and wear

of valve plate hinges


Stable Performance Springs
Stable Performance Springs allow higher

torque to be exerted on each plate,

with independent closure in

response to process medium.



Plate Design
Dual plates pivot on a central vertical

shaft.As flow begins the heel of the

plates open first, this prevents

scrubbing of the sealing surface.

When plates are fully open the disc

will open to 85°to ensure positive closing.


1. In standard or competitive designs,

our manufactory drill four holes

through the body of the check valve to

facilitate the installation of a hinge

pin and stop pin. The valves

are sealed by four plugs.

2. Moreover internal stop pin and hinge

pin which are machined into the cavity

of the body wall. This design eliminates

a potential shell or body leak path.



Design Description:
- Light and Compact
- “Zero Leakage” Sealing Design with Soft Seated
- Non Slam Design
- Installed in the horizontal and vertical up positions
- Discs open 85° to ensure a low pressure drop.
- Positive sealing under most operating conditions.
- Bubble Tight Close Off

Part Name

Carbon Steel

Alloy Steel to ASTM       Stainless Steel to ASTM     
Stop Shaft A182 F6a A182 F6a A182 F6a A182 F6a A182 F6a A182 F6a A182 F304 A182 F316  A182 F304L A182 F316L
Shaft A182 F6a A182 F6a A182 F6a A182 F6a A182 F6a A182 F6a A182 F304 A182 F316  A182 F304L A182 F316L
Spring F304 A182 F304 A182 F316  A182 F304L A182 F316L
Disc A216 WCB+13Cr A216 WCB+13Cr A217 WC1 A217 WC6 A217 WC9 A217 C5 A351 CF8 A351 CF8M A351CF3 A351CF3M

A216 WCB+13Cr

A352 LCB+13Cr A217 WC1 A217 WC6 A217 WC9 A217 C5 A351 CF8 A351 CF8M A351CF3 A351CF3M
Testing Certification Company Information

We are experienced in valve manufacturer on Chemistry & Oil industry, our valves are qualified with

the API 6D, CE97/23/EC, ISO9001,ISO14001 standards, in good quality and very competitive price.

FAQ a)   Why choose Didtek valves? Didtek Reply: Unbeatable value for money, fully certified production for all your tenders, 12 productions sites to offer you an unlimited range of valves, pipes and fittings, unlimited shipping options not to make you lose time or money, outstanding customer service: a single consultant will take care of all your requirements, making sure you get on time technical support, quotations, services and delivery.    b)   Where is Didtek Valve manufacturer base? Didtek Reply: The chosen location was Oubei town, a strategic position to reach a wide range of supplier of semi-finished products, foundries and raw materials and to be very close to Shanghai port.   c)   What's Didtek main product and market? Didtek Reply: Didtek Valve mainly manufacture Butterfly Valve, Ball Valve, DIN Industrial Valve etc, our main market is  European & American Market.   d)   What's the application of Didtek valves? Didtek Reply: Our valves are designed and developed for petrochemical industries, fertilizers, power plants, steel plants, nuclear application, paper mills, sugar plants, oil and natural gas industries and allied process industries.   e)   How is the Didtek Valve production? Didtek Reply: We are equipped with CNC lathes, automatic machining centers, automatic MIG seal welding and automatic hard facing facility to reduce human error. Today equipment and technology along with a qualified training to our employees produce valves as required by international market.   f)   Can I be an agent for Didtek products? Didtek Reply: Yes, we're looking for the agent all over the world, please contact us for further discussion.   g)   Can you deliver products exclusively made for us? Didtek Reply: Yes, we have the possibility to develop products that are unique for one customer subject to individual agreements. The products may differ in appearance, technical features or packaging. Please contact us to discuss your requirements.   h)   How is the process of Didtek valves tested? Didtek Reply: Didtek Valves pass the test in accordance to the customer’s request, please get detailed information from our catalogue or website.  Contact Information

Contact us if you need more details on Dual Plate Wafer Check Valve. We are ready to answer your questions on packaging, logistics, certification or any other aspects about Dual Plate Check Valve、Natural Gas Check Valve. If these products fail to match your need, please contact us and we would like to provide relevant information.

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