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

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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 name		Material
Valve body Bonnet		Grey iron
Butterfly		Grey iron
Valve shaft		Carbon steel
Sealing ring		NBR
spring		stainless steel

Product Anatomy

Double Disc Check Valve

Double Door Check Valve

Technical Parameter

Double Disc Check Valve Function and specification
Type	Nominal pressure （mpa）	Testing pressure（mpa）		Suitable temperature	Suitable medium
		Strength (Water)	Enclose (Water)
DH77X-10	1.0	1.50	1.10	≤80℃	water

Product Description

Double Disc Check Valve Outline and connecting measurement
Type	Nominal DN(mm）	Measurement（mm）
		L R	R	D	D0
DH77X-10	40	43	23.5	92	66
	50	43	28.5	106	66
	65	46	34.5	126	81
	80	64	44	135	95
	100	64	52.8	158	118
	125	70	66.5	190	146
	150	76	74.5	214	171
	200	89	87.5	270	225
	250	114	127	328	266
	300	114	147	378	311

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