All thermoplastic valves shall be Butterfly type constructed from Polypropylene, ASTM D 4101. All valve seats and O-rings shall be Buna-N, EPDM or FKM. Seat shall be a non-liner type interlocked to valve body. Bolt hole pattern shall conform to ANSI/ASME B16.5 Class 150. Disc shall be offset design with fully isolated, Type 316L stainless steel stem and Type 316 stainless steel hardware. Lever operated valves shall be equipped with high impact polypropylene handle having built-in lockout capability. Gear operated valves shall be equipped with position indicator and high impact polypropylene handwheel. Valves shall be pressure rated at [see table] for water at 73°F, as manufactured by Spears® Manufacturing Company.

  • UV Stabilized Polypropylene Construction
  • 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
  • Solid Type 316L Stainless Steel Stem, fully isolated from process fluids
  • 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 Handwheel, and Built-in Position Indicator (available for all sizes; standard on 10" & larger valves)
  • Pressure ratings include Dead-End Service (See Chart).
  • ANSI/ASME B16.5 Class 150 Bolt Pattern
Unit of Measure

Pressure Rating at 73°F

N/A Water: Full flow (open) 150 psi, Back pressure (closed) 75 psi

Max. Service Temperature

N/A 140 °F

Seat Material