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Form Title: 

Document #: 

INSTALLATION AND MAINTENANCE MANUAL 

MM-CH004 

(Form: DEF-006A-1) 

Revision: 

0

 

Document Title: 

Date: 

EXTERNAL CHEMICAL HYDRAULIC VALVE

 

Oct. 20, 2020 

Page:

 

1 of 10

 

 

 

Betts Industries Inc.   

   814·723·1250   

   1800 Pennsylvania Ave. West   

   Warren, PA 16365   

   

www.BettsInd.com

 

 

Print Date: 1/22/2021   

This form is considered uncontrolled 24 hrs. after print date.

 

 
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 
 
 

 

 

PART NUMBERS

 

(Including, but not inclusive) 

CH46955SST, CH46955LHT, CH46949SST, CH46949LHT, CH46955 

 

 

 

 
 

 

 

Table of Contents: 

1.0  General 
2.0  Parts List 
3.0  Description and Intended Use 
4.0  Installation 
5.0  Inspection and Testing 
6.0  Disassembly and Rebuild Instructions 
7.0  Troubleshooting Guide

 

 

 

Summary of Contents for CH46949LHT

Page 1: ...sylvania Ave West Warren PA 16365 www BettsInd com Print Date 1 22 2021 This form is considered uncontrolled 24 hrs after print date PART NUMBERS Including but not inclusive CH46955SST CH46955LHT CH46...

Page 2: ...rform maintenance on this equipment 1 5 As with any maintenance work proper safety gear and procedures must be used at all times A list of hazards may include but are not limited to contents under pre...

Page 3: ...O Ring Seal 1 Tef Sil 75206TS 12 4x3 Body Assembly 1 316 Stainless 26099SS 4 Disc 1 316 Stainless 16743SS 4x3 Jacketed Body Assembly 316 Stainless 35086SS Hastelloy C 22 Trim 16743LH 4x4 Body Assembly...

Page 4: ...8 a 2 3 5 1 500 psi minimum hydraulic line pressure required to operate valve but do not exceed 3 000 psi hydraulic line pressure 3 6 A complete information page can be found in our catalog Section 35...

Page 5: ...mbly and Rebuild Instructions for proper repair procedures 6 0 Disassembly and Rebuild Instructions 6 1 To replace disc 4 and or seat 5 Attach hydraulic line and slightly open valve Hold cap collar 2...

Page 6: ...ly 15 and 20 Unscrew piston 15 from piston holder 20 by holding piston holder 20 in vice and using allen wrench in end of piston 15 Inspect piston 15 for scratches or pitting Replace if these cannot b...

Page 7: ...not to damage the lower stem 14 by applying too much pressure with the vice If lower stem 14 remains in valve body after the seal retainer ring 18 was removed continue to hold the cap collar 2 and ins...

Page 8: ...d or pitted the valve body 12 must be replaced Remove seat 5 using care to prevent damage or scratches to the seat area of the flange Inspect seat area of flange Valve body must be replaced if there i...

Page 9: ...em 6 and while holding the cap collar 2 carefully install lower stem 14 to upper stem 6 compressing the main spring 13 PRE LOADED SPRING Use caution when unloading and loading spring force is high and...

Page 10: ...Cause Solution Valve drifts closed Hydraulic pump malfunction See MM HP001 for hydraulic pump trouble shooting guide Air in system Loosen fittings on all valves Operate pump until all air is bled fro...

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