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HUB End Dual Check Valve

HUB End Dual Check Valve

Structural Feature Short structural length,only 1/4~1/8 of that of traditional flanged check valve; Low volume,light weight,only 1/4~1/20 of those of traditional flanged check valve; Quick valve disc closedown,low water hammer pressure; Applicable for and easily installed for vertical or...
Product Details


A check valve, reflux valve, or one-way valve is a valve that normally allows fluid (liquid or gas) to flow through it in only one direction. Check valves are two-port valves, meaning they have two openings in the body, one for fluid to enter and the other for fluid to leave. There a re various types of check valves used in a wide variety of applications. Check valves are often part of common household items. Although they are available in a wide range of sizes and costs, check valves generally are very small, simple, or inexpensive.


1. Nominal diameter:

1.5" - 32"  (DN40 - DN800)

2. Pressure range:

Class  150 -  2500 (PN16 - PN420)

3. Working temperature:
    -196℃ - 560℃

4. Body material:
  Carbon steel, Stainless steel, Alloy steel, Bronze, etc

5. End connection:
    RF, RTJ, BW


1. Inspection and test: API598, JB/T9092;

2. Design and manufacture: API594, JB/TB8937;

3. Face to face and end to end: API594, API6D, JB/T8937;

4. Pressure-temperature rating: ASME B16.34, DIN2410, SH3406, JB/T74;

5. Pipe flange: JB/T74~90, JB/T9112~9124, SH3406, ASME B16.5, DIN2543~2548, ASME B16.47.

structural characteristics:

1. Quick valve disc closedown, low water hammer pressure;

2. Smooth flow passageway and small fluid resistance;

3. Narrow valve travel and small closedown impact;

4. Flexible action and good sealing performance;

5. Long service life and good reliability.

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