* Custom processing offered: Yes 

* Brand: Zhonggong

* Model: H71Y20-150

* Material: Stainless Steel

* Connection Type: Wafer Type

Type: VRVR Silent Type 

Structure Type: Lift Type 

Nominal Diameter: DN20-150mm 

Suitable Medium: Various Highly Corrosive Chemical Media 

Form: Plunger Type 

Pressure Environment: High Pressure 

Standard: National Standard 

Flow Direction: Unidirectional 

Drive Method: Hydraulic Control 

Operating Temperature: High Temperature 

Type (Channel Position): Straight Through Type

I. Overview

All components of this patented utility model product are made of corrosion-resistant stainless steel material, and it can be installed and used in pipelines at any position to prevent medium backflow and check reverse flow in boiler feedwater systems. The connection method utilizes the existing two flanges of the pipeline to clamp the valve, allowing it to be put into operation immediately. The technical indicators of this product are superior to any other check valve currently on the market, with very reliable sealing, sensitive opening, low opening pressure, uniform disc opening, and no tilting phenomenon. Its artistic exterior design makes it beautiful and elegant, finely crafted, and further highlights its quality. It has a very wide range of applications, including water; steam; oil; acid; alkali; hydrogen; ammonia, and especially fire protection pipelines. Due to its novel and unique structure and excellent performance, this product has obtained a national patent with patent number: 91212912.3. This product complies with the standard: JB/T8937-1999 "Wafer Check Valve", and has obtained the special equipment manufacturing license issued by the state, with the number: TS2743006-2010.

II. Technical Parameters

Working Pressure: 2.5~4.0MPa

Test Pressure: 3.125~5.0MPa

Maximum Medium Temperature: <300 degrees

III. Specifications and Installation Dimensions See the Table Below

※This model is compiled according to the national standard "Valve Model Compilation Method".

IV. Installation Diagram is as Follows:

V. Installation Precautions:

During installation, the two flange surfaces must be parallel, and no impurities should flow into the check valve from the pipeline. When tightening the bolts, try to ensure that each bolt is evenly stressed. During operation, if there is scale or impurities, it must be cleaned; otherwise, dirt may prevent the disc from properly covering the seat, leading to leakage. This product must not be subjected to impact.

VI. Ordering Information

Our company warmly serves users; you can contact us in person, by mail, or by phone. We can arrange shipping on your behalf. If there are any quality issues with the product, our company will take responsibility to resolve them, freeing you from worries. We remind users to please identify our company's "Zhonggong Brand" to prevent counterfeits.