Spears PVC And CPVC Butterfly Valves

Description

Innovation, Versatility & High Performance Technology

Spears® innovative design departs from traditional liner-seat type valves 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. Standard valves are produced from PVC or high temperature CPVC in IPS sizes 1-1/2″ through 14″. PVC and CPVC True Lug valves are produced in sizes 1-1/2″ through 12″.

Special Offset Disc

Lifts quickly from single contact sealing surface to reduce seat wear and lower operating torque, with bubble-tight seal off. Suitable for vacuum service.

Limited Contact Interference Seat Design

Sealing contact between disc and seat takes place only at close of valve, allowing free travel through full range of valve opening. Eliminates seat creep, extrusion and wear typical with conventional liner-type seats. Exclusive design interlocks seat and body to prevent wash-out or blow-out.

Field Replaceable Seat — Choice of Buna-N, FKM, or NSF® Certified EPDM

Replace seat without full valve disassembly using convenient Seat & Seal Carrier Replacement Kit or Full Valve Overhaul Kit. Choice of Buna-N, EPDM or FKM seats and seals. EPDM valves are NSF® Certified for use with potable water.

Solid, Chemical & Corrosion Resistant 316 Stainless Steel Stem — Fully Isolated

Heavy blow-out proof 316 stainless steel stem is standard on all valves. Fully isolated (dry stem) eliminates contact with process fluid.

Rugged PVC or CPVC Body & Disc

Computer engineered design places strength where needed most. PVC or high temperature handling CPVC materials provide exceptional chemical and corrosion resistance. Integrally molded actuation mounting pad and lug receptacles for field installable lug sets.

Full 150 psi Pressure Rating

Pressure rated to a maximum internal pressure of 150 psi at 73°F — including Dead-End Service.

Low Profile Cast Aluminum Gear Operator

Standard on 10″ and larger sizes, utilizes high efficiency worm gear drive, with high impact polypropylene handwheel and built-in position indicator. Available as an option on smaller valves. Special order gear operators available for a variety of submersible and other environmental applications.

Field Installable Lug Inserts or Factory Installed True Lug Valves (Sizes 1-1/2″ – 12″)

Standard valve body accepts optional field installable lug insert sets for easy single-sided installation and system add-on. True Lug valve comes with factory installed lugs for total versatility, including disconnection from either side while under pressure. Both styles suitable for full pressure dead-end service. Choice of stainless or zinc plated steel lugs.

Exclusive Factory Reconditioning Program

Spears® will factory recondition originally purchased Butter fly Valve to full working order — regardless of condition. Contact Spears® Technical Services Department for details and pricing.

High Impact Polypropylene Lever Handle

Standard on 1-1/2″ through 8″ sizes, provides quick selection from any one of seven stop positions, with built-in lockout capability. Reversible 180° for either right or left side operation.

Polypropylene & PTFE Lined Valves

High performance Butter fly Valves are available in Polypropylene 1-1/2″ through 60″. See publication PPBFV-2 for additional details. Plus, unique PTFE lined valve design custom manufactured for high purity systems. Contact Spears® Technical Services for additional information.

Basic Valve Options

Butterfly Valves can be purchased with any combination of the following options:

• Lever Handle Valve (through 8″ only)
• Gear Operated Valve
• Valve Only (no handle/operator)
• True Lug Valves
  — Stainless Steel
  — Zinc Plated Steel
• Buna-N Seats
• EPDM Seats
• FKM Seats
• PTFE Sleeved Seats

Valve Repair & Accessory Kits

• Lever Handle Kits
• Gear Operator Kits
• Chainwheel Operator Kits
• Lug Insert Sets (for standard valve)
  — Stainless Steel
  — Zinc Plated Steel
• 2″ Square / T-Style Gear Operator Nuts
• Seat & Seal Carrier Replacement Kits
• Valve Overhaul Kits
• Stem Extension Kits