| Design |
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Ranges of Materials |
| KATA cast steel check valves are designed and manufactured to provide maximum service life and dependability. All check valves meet the design requirements of American Petroleum Institute standard API600 & 6D.BS EN 13709 and generally conform to American Society of Mechanical Engineers standard ASME B16.34. Valves are available in a complete range of body/cover materials and trims. |
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 KATA Steel Valves |
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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: |
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Design descriptions: |
ˇńSTEEL CHECK VALVES, API 6D
ˇńSTEEL CHECK VALVES,ISO14313
ˇńSTEEL VALVES,ASME B16.34
ˇńFACE TO FACE, ASME B16.10
ˇńEND FLANGES,ASME B16.5
ˇńBUTTWELDING ENDS,ASME B16.25
ˇńINSPECTION AND TEST, API 598/API 6D |
ˇńBC,BOLTED COVER
ˇńSWING TYPE,ANTI-ROTATION DISC
ˇńRENEWABLE SEAT RINGS
ˇńNON-PENETRATE DISC SHAFT
ˇńHORIZONTAL OR VERTICAL SERVICE
ˇńFLANGED OR BUTTWELDING ENDS |
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