8000BS Series
Bellows Stem Seals, Control Valve
Bellows stem seals eliminate fugitive emissions by surrounding the valve stem with a pressure-tight barrier, isolating the stem from the process fluid and preventing leakage to the atmosphere. For an extra measure of protection, the bellows stem seal option provides a back-up seal of Teflon, braided or Graphite/Grafoil packing.
- Pilot plant installations
- Test stands
- R & D facilities
- Processing plants
- Hazardous service
- Fugitive emissions
Industries
- Aviation & aerospace
- Chemical, refining & petrochemical
- Oil & gas
- Process or industrial
- Test equipment & services
- Barstock, not cast, construction to avoid potential porosity issues
- Available in Kynar, PVC and CPVC
- Full compliance with most stringent requirements of the Clean Air Act
- Secondary packing chamber with a bellows leak monitoring port for additional security
- Two-piece stem allows stem adjustment without breaking the bellows bonnet extension seal
Seat Type: Globe or Angle – Class III, IV or VI
Sizes: 1/2″ – 1-1/4″ (DN15 – DN32)
End Connections: NPT, BSPT, Raised-face Flanges (ANSI, DIN, JIS), Ring Type Joint Flanges, Socket Weld, Bolt-thru Flanged
Body Materials: Carbon Steel, Stainless Steel, Brass, Monel, Hastelloy B & C, Alloy 20, Kynar, PVC
Cv (Kv): 0.05 to 7.1 (0,04 to 6,2)
Ranges: 3-15 or 6-30 psi; split ranges are available with optional positioner
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