High Performance Butterfly Valves

• Flow Way Direction, Slot on top stem indicates positive disc position
• Blow-out Proof Shaft, 17-4Ph stainless steel stem provides excellent strength, alignment and rigid support to disc.
• Easy-Access Parking Gland, Provides means for packing adjustment even when “Direct-mount” actuation and insulation are utilized.
• Top Stem Bearings, Top RPTFE/SS self-lubricating bearings provide excellent stem support and shaft alignment.
• O-Ring, Extra Protection for leakage through body and seat retainer
• Soft Seat, One-piece solid RPTFE static and dynamic seat design seals at both high and low pressures.
• Wedge Pins, Provide positive mechanical attachment of disc to shaft.
• Bottom Stem Bearings, Bottom RPTFE/SS self-lubricating bearings provide excellent stem support and shaft alignment.
• Bottom Packing, The lower shaft utilizes seal in the body to prevent external leakage and simplify valve maintenance.
• Shaft Retainer, Provides positive stem retention.
• Mounting Top Flange, Meets ISO5211 pattern providing low cost “Near Direct Mount” actuation capability.
• Extra Long Neck, Provides path for heat dissipation and allows space for insulation.
• Stem Seal, Self-lubricating PTFE V-rings prevent leakage to atmosphere.
• O-Ring, Serves as first line of defense for stem leakage
• Retainer Cover, Maintains seat integrity prior to installation. Interchangeable with any seat option. Standard surface finish is 125 to 200 AARH. Compatible with both standard and spiralwound gasket designs.
• Retainer Fasteners, SS set screws provide ease of seat replacement.
• Over Travel Stop, Integrally cased into body, prevents disc from rotating in wrong quadrant and damaging seat
• Anti-Static Grounding, provided by stem ball at the very end of the stem shaft.
• Bottom Flange Cover, Equalizes pressure under shaft, eliminating “piston” effect at higher pressure

Application Data Sheet – Fill Out and Return for Accurate Quote

• Butterfly Valve Application Data Sheet