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Thermoplastic Valves Product Guide & Engineering Specifictions

High Purity Butterfly Valves

Page 787 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

Sample Engineering Specification

All thermoplastic Butterfly Valves shall be constructed from CPVC Type IV Cell Classification 23447 with TFM liner and

ECTFE disc. Disc and liner interface shall isolate valve components and elastomeric seals from process media. Valve Stem

shall be PTFE coated type 316 stainless steel. Body shall be lug style with 18-8 stainless steel or type 316 stainless steel lugs.

Bolt hole patterns shall conform to ANSI/ASME B16.5 Class 150. Valve shall be gear operated with powder coated operator

housing, position indicator, and high impact polypropylene handwheel. Valve shall be pressure rated at 150 psi for water at

73°F, as manufactured by Spears

Manufacturing Company.

Features - CPVC

This advanced technology TFM Lined valve is specially designed and produced for

applications requiring high purity and maximum chemical resistance. Spears

exclusive

component-interface seal fully isolates process media to disc and liner contact only. Custom

produced in sizes 2" through 6".

•

Direct disc-to-liner seal between ECTFE fluoropolymer disc and TFM liner for positive

shut-off. Specially designed offset disc lifts quickly from sealing surface to minimize wear

and reduce operating torque.

• Special disc-to-liner interface isolates valve components from process media. Eliminates

stem and elastomer backing seal contact with process fluids. In the unlikely event of seal

failure, leakage is expelled externally to protect process integrity. TFM skirt is integrally

formed as part of the liner to isolate the CPVC body.

• Solid, fully isolated type 316 stainless steel stem is additionally PTFE coated as a

safeguard.

• Lug style, chemical and corrosion resistant CPVC body features integrally molded

actuation mounting pad and provides increased temperature handling capability to 200°F.

• 316 stainless steel Lug Inserts provide quick single-side valve installation and easy system add-on.

• Low Profile Gear Operator features high efficiency worm gear drive with built-in position indicator and high impact polypropylene

handwheel. Operator housing is powder coated for improved cleanliness. Reversible for either right or left side operation.

• 150 psi Maximum Internal Pressure rating at 73°F.

Factory Reconditioning

In the event of damage, this maintenance-free valve can be factory reconditioned in order to maintain optimum serviceability

and assure proper component isolation function. Valve reconditioning is made on an exchange basis with original limited

warranty. Contact Spears

Technical Services for additional information.

High Purity TFM Lined

Quick-View Valve

Selection Chart

Valve Size Part Number Pressure Rating

2 253322-020

150 psi

Non-Shock

Water

@ 73°F

3 253322-030

4 253322-040

6 253322-060

HALAR

is a registered trademark of Ausimont, Inc.

Hostaflon

is a registered trademark of Hoechst Celanese Corporation.

Material Specifications

Media Contact Components:

Liner/seat TFM (Hostaflon

— modified - PTFE)

Disc ECTFE (HALAR

— ethylene chlorotrifluoroethylene)

No Media-Contact Components:

Body CPVC (chlorinated polyvinylchloride)

Stem Type 316 Stainless Steel, PTFE coated

O-ring Backing FKM (fluorocarbon)

Bushings Glass Reinforced Polypropylene blend / Polyurethane

Gear Operator Die Cast Aluminum

Handwheel Polypropylene

NOTE: High Purity TFM Lined Butterfly Valve has the same

basic dimensions as Spears

Standard Butterfly Valve.