Brochure

Sample Engineering Specification

All thermoplastic Check Valves shall be Butterfly design constructed from PVC Type I, ASTM D 1784 Cell Classification

12454 or CPVC Type IV, ASTM D 1784 Cell classification 23447. Valves shall be Flanged, Spigot, Male Threaded, Grooved

end or Wafer style. All valve seals shall be reinforced EPDM or FKM with replaceable internal components. All 2" - 8" valves

shall be pressure rated at 150 psi, all 10" - 14" valves at 100 psi for water at 73°F, 16" valves at 70 psi and all 18" - 24" valves

at 50 psi for water at 73°F as manufactured by Spears

Manufacturing Company.

Features – PVC, CPVC

This multi-purpose check valve provides an extremely low profile and very quick response to back flow without slamming

Since most all components are internal, Spears

Butterfly Check Valves require no more space than a piece of pipe and fit

ting. Special design incorporates flexible reinforced elastomer seal for long life and is suitable for mounting in any posi

tion for greater versatility. Available in IPS sizes 2" - 12" with Flanged, Spigot, Male Threaded, Grooved Pipe style & Wafe

end connections, and 14" - 24" Flanged, Spigot, Grooved & Wafer end connections. Can be custom produced to virtually an

standard pipe diameter.

•

Chemical Resistant PVC & CPVC Construction

• No Metal Components

• Quick Response Shut-off In Any Position

• Replaceable Internal Components - Choice of Reinforced EPDM or FKM

• Suitable for Horizontal or Vertical Installation

• Sizes 2" - 8" Pressure Rated to 150 psi for water at 73°F

• Sizes 10" - 14" Pressure Rated to 100 psi for water at 73°F

• Sizes 16" Pressure Rated to 70 psi for water at 73°F

• Sizes 18" - 24" Pressure Rated to 50 psi for water at 73°F

• Assembled with Silicone-Free, Water Soluble Lubricants

Thermoplastic Valves Product Guide & Engineering Specifictions

Butterfly Check Valves

Page 811 Suitable for Oil-Free air handling to 25 psi, not for distribution of compressed air or gas Spears

Manufacturing Company

Due to Material Cost Variations, Prices Sub

ect to Chan

e. Check On-line Catalo

www.spearsmf

.com