Spears® patented Butterfly Valve design departs from traditional liner-seat type valve to eliminate seat creep, reduce operating torque and provide positive seal-off. Ideally suited for flow control or throttling, this high-performance valve is offered with a full variety of options for greater application versatility in industrial and chemical processing applications. Available in IPS sizes 1-1/2" - 14" in Standard or 1-1/2" - 12" True Lug (factory installed lugs) style.
• Special off-set Disc lifts quickly from seat to reduce wear and reduce operating torque.
• Patented Limited Contact Seat design provides free travel - eliminates seat creep, extrusion and wear. Field replaceable without full valve disassembly.
• Interlocking Body & Seat prevents wash-out or blow-out.
• Buna-N, EPDM or FKM Seat & Seals
• Fully Isolated Solid Type 316L Stainless Steel Stem
• Reversible High Impact Polypropylene Lever Handle with 7-Position stops & Built-in Lockout (standard handle on 1-1/2" - 8" valves; not available on 10" & larger valves)
• High Efficiency Gear Operator with Cast Aluminum Housing, Polypropylene Hand-wheel, and Built-in Position Indicator (available for all sizes; standard on 10" & larger valves)
• Lug Insert Style valve has factory installed SS316 or zinc plated steel lug inserts.
• Standard valve accepts field-installable Lug Inserts Set option
• True Lug design has factory installed zinc plated or SS 316 lugs and is specially designed for connection to either side of valve.
• Pressure Rated to 150 psi @ 73°F including Dead-End Service.
• ANSI/ASME B16.5 Class 150 Bolt Pattern
• Valves with EPDM Seals & Seats are NSF® Certified for Potable water use.
Optional Accessories:
• PTFE Coated Stem
• Stem Extension Kit
• PTFE Seat Sleeve
• Lever Handle Kit (standard on 1-1/2" - 8" valves)
• Gear Operator Kit (standard on 10" & larger valves)
• T-Handle Kit
• Field Installable Lug Insert Sets (for Standard valve)
• Speed Handle (for gear operated valves)
• 2" Square/T-Style Operator Nut (for gear operated valves)
• Chain-wheel Operator Kit (for gear operated valves)
• Positive Stem Stop (for gear operated valves)
• Submersible Gear Operators
