Pasco - Model BB & CS -Cast Steel Swing Check Valve
PASCO cast sleet check valve are designed and manufactured to provide maximum service trie and depend ability. All check valves are meet the design requirements ol American Petroleum Institute Standard API 6C0 & API 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/bonnet materials and trims
Range of Materials
Standard body/bonnel materials include nine grades ol carbon, low alloy and stainless steels For special apoltcations they can be supplied in other grades ol alloy and stainless steel). There`s a full range of trim materials to match any service. Optional packing and gasket materials are available Ic a lull range of service conditions
Available Modifications for PASCOCast Steel Valves
- Tnm Changes
- End Connection Modifications
- Gasxet Changes
- Outside Lev©` and Wetghi
- Slam Reorders.
- Pressure Equalizing
- Outside Lever and Weigni
- Customer Specified Coatings ` WekJ End Bore Changes
- Oxygen & ChWine Cleaning * Packaging
Eyebolt
For 150LO-8*. 300Lb-8*. 600Lb-6*, 900Lb / l500Lb / 2500Lb-4" & Over
End Connections
A choice of Flanged . RTJ flanged or Buttwelding end for piping flexibility
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.
BB
Bolted bonnet Welding bonnet and pressure seal bonnet in services requiring frequent cycling or with high pressure / temperature variations
Body-to-Bonnet Joint
A Male and Female joint or Tongue and Groove joint is used 1501b to 600Lb valves. Ring joint is used in the body to bonnet connection in 900Lb & higher rated valves
Seat Rings
Separate heavy duly, full ported rings for easy maintenance. Screwed or welded connection into body
HCU Weighted Mechanical Accumulator
This design can be used to either dampen or assists 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
