03. CHECK

Check Valve

Unlike stop valves like gate valves or globe valves, which can close both the regular flow and back-flow, check valves can only close the back-flow.

 Since the element operates to close after the back flow starts, normally check valve cannot adjust the flow except certain valve equipped with special structure.

SPECIFICATION

Body material: JIS, ASTM, ASME various forged steel material, carbon steel, stainless steel, bronze type
Fluid: water, steam, gas, oil, etc.
Pressure class · Nominal diameter: Class 150Lb ~ 2500Lb, ~ 60 "/ JIS 10K ~ 63K, ~ 1500A
Connection type: socket welded type, butt welded type, threaded type, flanged type *
Operating method: Manual operation (including manual gear), electric operation, pneumatic operation

* In the case of flanged type, please indicate shape of its facing (Raised face/RF), Flat face/FF etc.) per flange standard (ASME, JIS etc).

● The above specifications are standard range. We will select individually according to use condition and application, so please inform flow condition etc.

In order to suppress / improve the occurrence of swing type, lift type, dual plate type and water hammer, which are often used in building facilities and general piping, in addition to the smolenski type, tilting type fitted with "spring", ball type There are handling of products with special structure such as foot valves etc.

In addition to Lift Check Valve, Swing Check Valve or Dual Plate Check Valve that are often used for general piping or building utility, we deal with Check Valves with special structure as below;
・ Tilting type
・ Ball type
・ Smolensky type, which is equipped with spring to suppress the water hammer