Hydraulic Test Block Valve Model：SD61H-4、SD61H-6.4、SD61H-10.0、SD61H-PW5417V、SD61H-PW545V、SD61H-PW5520I、SD61H-PW5420V、SD61H-PW543.2V、SD61H-PW545V、SD61H-PW555I、SD61H-PW544.5V、SD61H-PW564.5I、SD61H-PW567V。

Nominal Diameter：DN225、DN350、DN400、DN450、DN550、DN650、DN700、DN850、DN1000。

 Hydraulic Test Block Valve Weight (kg)：558、1025、1133、1135、1167、1180、1187、1182、1201、1733、1775、1796、1840、2605、3239、3339、4602、4749、4825、5250、5304、5279、8955、9403。

 Applicable Media: Suitable for media including water and steam.

 Connection Dimensions (mm)

Φ273*40,Φ406*20,Φ406*14,Φ416*35,Φ445*38,Φ406.4*65,Φ426*20,Φ426*11,Φ534.5*83.1,Φ534*92,Φ508*20,Φ508*12.5,Φ508*26,Φ508*17.5,Φ558*14.2,Φ697*31，Φ697*33,Φ711*20,Φ785*40,Φ775*35,Φ787*42,Φ875*23,Φ864*17.5,Φ1066.8*30。

Structural Features of Test Block Valves

1.The valve features a pressure self-tightening seal design in its mid‑cavity, with both end pipes connected by welding.

2.A blanking plate is installed during hydraulic testing and can be removed afterward, allowing the valve to undergo multiple hydraulic tests.

3.The sealing surface of the blanking plate is achieved by adjusting the screws on the upper part of the support plate.

4.The valve disc sealing surface employs a flat O‑ring seal, while the valve seat sealing surface is made of stainless steel overlay welding.

5.The hydraulic test block valve is delivered in a state ready for hydraulic testing.

Test Block Valve Manufacturers

Precautions for Hydraulic Block Valves

1.If the sealing surface of the valve body is damaged, it can be repaired, but a hydraulic seal test must be performed again, and the valve may only be reused after passing the test.

2.If leakage occurs during hydraulic testing, check whether the installation direction is correct.
3.To prevent corrosion, the valve should be stored indoors or in a dry place.