Ranges of Materials
Standard body/cover materials include nine grades of carbon, low alloy and stainless steels, for special applications they can be supplied in other grades of alloy and stainless steel, there’s a full range of trim materials to match any service optional packing and gasket materials are available for a full range of service conditions.
Available Modifications For UNIQUE Cast Steel Valves
| Trim changes
End connection modifications
Packing and gasket changes
Operator mounting
Handwheel extensions |
Pressure equalizing
Customer specified coatings
Weld end bore changes
Oxygen & chlorine cleaning & packaging |
| A)Eyebolt
For 150Lb-8″,300Lb-8″, 600Lb-6″,900Lb/1500Lb/ 2500Lb-4″ & over. |
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B)BC
Bolted cover. welded cover and pressure seal bonnet in services requiring frequent cycling or with high pressure/temperature variations. |
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C)End Connections
A choice of flanged, RTJ flanged or buttwelding end for piping flexibility. |
| D)Body-to-Cover Joint
A male and female joint or tongue and groove joint is used 150Lb to 600Lb valves. Ring joint is used in the body to cover connection in 900Lb & higher rated valve. |
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E)Outside Lever And Weight
All external hinge pin swing check valves 12″ and smaller are available with an optional outside lever and weight, internal hinge available with all swing check valves. |
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F)Seat Rings
Separate heavy duty, full ported rings for easy maintenance. Screwed or welded connectioninto body. |
| G)HCU weighted mechanical accumulator
This design can be used to either dampen or assist closing of the check valve disc depending on orientation. by using the hydraulic control unit to buffer action the disc, the valve opens at lower flow rates. |
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Applicable Standards
●STEEL CHECK VALVES, API 6D
●STEEL CHECK VALVES,ISO14313
●STEEL VALVES,ASME B16.34
●FACE TO FACE, ASME B16.10
●END FLANGES,ASME B16.5
●BUTTWELDING ENDS,ASME B16.25
●INSPECTION AND TEST, API 598/API 6D
Design descriptions
●BC,BOLTED COVER
●SWING TYPE,ANTI-ROTATION DISC
●RENEWABLE SEAT RINGS
●NON-PENETRATE DISC SHAFT
●HORIZONTAL OR VERTICAL SERVICE
●FLANGED OR BUTTWELDING ENDS