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Double Disc Check Valve

Medium temperature: ≤80 ℃
Medium: water
Caliber: DN40-600
Pressure: 1.0/1.6Mpa
Body material: gray cast iron / nodular cast iron
Connection method: Wafer type


Product Details

Design Features:

Yaosheng-double door check valve is suitable for automatically preventing backflow in systems that need to allow flow in one direction and prevent flow in the opposite direction. The double door check valve is recommended for cleaning liquids and gases. Due to its cost-effective design and non-impact performance, it has a reputation for excellent performance in refineries, petrochemicals, gas liquefaction, other process industries, and HVAC applications. Lighter weight and shorter laying length save initial cost, require less space, and are easier to install than full-body, swing type.


Structural materials

Double Disc Check Valve Main parts and materials
Parts nameMaterial
Valve body BonnetGrey iron
ButterflyGrey iron
Valve shaftCarbon steel
Sealing ringNBR
springstainless steel


Product Anatomy

Double Disc Check Valve


Double Door Check Valve

 Technical Parameter

Double Disc Check Valve Function and specification
TypeNominal
pressure
(mpa)
Testing pressure(mpa)Suitable
temperature
Suitable
medium
Strength
(Water)
Enclose
(Water)
DH77X-101.0 1.50 1.10 ≤80℃water


Product Description  

Double Disc Check Valve Outline and connecting measurement
TypeNominal
DN(mm)
Measurement(mm)
L
R
RDD0
DH77X-10404323.59266
504328.510666
654634.512681
80644413595
1006452.8158118
1257066.5190146
1507674.5214171
2008987.5270225
250114127328266
300114147378311


Characteristic

1.Compact structure, reasonable design, good valve rigidity, smooth passage.

2.The use of flexible graphite packing, reliable sealing, light and flexible operation.


Applications:

Wafer style check valve industrial applications: Petroleum, Chemical, Paper, Making, Fertilizer,Coal Mining, Water Treatment and etc.


Introduction:

Small volume Compact structure and convenient maintenance

The dual plate can be self closed due to the elastic torque.

Fast closing can effective avoid the back-flowing

A class sealing, Zero leakage.

Easy installation, can be used to vertical and horizontal set up.


Our Advantage:

1. We have Sand or Precision casting technology, So we can as your drawing design and production.

2. Customers' logos are available cast on the valve body.

3. All our stainless steel wafer check valves with tempering procedure before Processing.

4. Use the CNC lathe during whole process.

5. The disc sealing surface use plasma welding machine welding.

6. Every valve must be tested before delivery from the factory, only qualified ones can be shipped.

7.The split disc check valve we usually use Bags to package, We also can according to specific customer's requests.


Certificates:

CE,API,ISO approved.


Why choose Yaosheng?

1. We are a gost valve manufacturer, and produce dual disc check valve since 1992.

2. Fast delivery.

3. Low price with high quality.

4. Professional work Team!


We also provide other GOST valve, JIS valve, DIN valve, BS series, etc. 


More information about valve:

Backflow Preventer vs. Check Valve


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