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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:

 

7 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.

 

 
 

 

Hold cap collar stationary while using spanner wrench 
(16236MS) to unscrew seal retainer ring (18). 

  If lower stem (14) unscrews from the upper stem (6) it will be 

necessary to clamp lower stem (14) in a vice to unscrew seal 
retainer ring (18).  Care should be taken 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 
insert a ¼” thick x 2” wide piece of plate into the slots on the 
lower stem (14) and unscrew lower stem (14). 

 

  Remove bearing (17) from seal retainer ring (18) and replace 

with new from kit. 

  If bearing is not present, inspect seal retainer (18) for counter bore to receive 

bearing.  If the counter bore is not present, replace seal retainer (18) with the up 
to date version, including the bearing (17).  See Engineering Bulletin 8-08 for 
more detail on the bearing (17).   

  Using care not to damage the seal surface of the seal retainer ring (18), remove 

old main seal (16) and install new main seal (16) into lower stem (14). 

CORRECT 

INCORRECT 

Содержание CH46949LHT

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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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