Page 45 - Chemical

REPLACE DISC AND/OR SEAT:
REPLACE STUFFING BOX PACKING:
• If lower stem half (13) remains in valve body after seal retainer ring (16) has been removed, hold cap collar (2) and insert a 1⁄4” thick x 2” wide piece of plate into the slots on the bottom of the lower stem half and unscrew it from the upper stem half.
• Remove main spring (12), washers (8) & (11) and stuffing box spring (10).
• Remove old packing (9) and wiper (7) and replace with new.
REPLACE MAIN SEAL:
• If lower stem half (13) unscrews from upper stem half 95) it will be necessary to
clamp the lower stem half (13) in a vice to unscrew seal retainer ring (16).
• After removing seal retainer ring (16), remove old main seal and install new. • Care should be taken not to damage seal surface of lower stem half (13).
• Hold cap collar (2) and remove cap nut (1) and remove disc (3).
• Care should be taken not to lose Teflon washer (4).
• Remove seat (6), use care not to damage seat surface of seat flange.
• Install new disc (3) and/or seat (6).
REPLACE STUFFING BOX PACKING OR MAIN SEAL:
• Disconnect hydraulic line and unscrew indicator pins (19) and piston holder
assembly (14) & (18).
• To ensure disc (6) does not get damaged, hold cap collar (2) stationary while
using a spanner wrench (BET 16236MS) to unscrew the seal retainer ring (16).
Seat w/ 0-rings
Replacement Kit of Teflon® Parts:
BET CH75296TF - Includes items - 4,6,7,8,9,10,15,20,21
BET CH75296TFTS - Includes items - 4,6a,6b,7,8,9,10,15,20,21
Conversion/Rebuild Kit:
To Convert from Old Style Single Piece Stem to New Style 2-Piece Stem
BET CH75297TF - Includes items - 4,5,6,7,8,9,10,13,14,15,16,17,18,20,21
BET CH75297TFTS - Includes items - 4,5,6a,6b,7,8,9,10,13,14,15,16,17,18,20,21
Key
Description
Req
Material
Part Number
1
Cap Nut
1
316 Stainless
BET 16672SS
2
Cap Collar
1
316 Stainless
BET 16671SS
3
Disc
1
316 Stainless
BET 16743SS
Hast C-22 Trim
BET 16743LH
4
Teflon Washer
1
Teflon
GSK 16690TF
5
Upper Stem Half
1
316 Stainless
BET 28202SS
Hast. C276
BET 28202HC
6
Replaceable Seat
1
Teflon®
BET 16644TF
Kalrez
BET 16644KA
6a
Replaceable Seat w/ O-Rings
Teflon®
BET 18897TFTS
Kalrez
BET 18897KA
6b
Seat O-Ring only
2
Tef-Sil
BET 18246TS
Kalrez
BET 18246KA
7
Wiper
1
Teflon®
BET 15862TF
Key
Descriptoin
Req
Material
Part Number
8
Follower Washer
1
316 Stainless
BET 19594SS
9
Packing Rings
Set of 3
Teflon®
BET 15759TF
10
Spring - Stuffing Box
1
316 Stainless
BET 19616SS
11
Washer - Main Spring
1
304 Stainless
BET 15684SL
12
Main Spring
1
Chr. Van.
BET 18850EY
13
Lower Stem Half
1
303 Stainless
BET 28201SL
14
Piston
1
303 Stainless
BET 75136SL
15
Main Seal
1
302 SS/PTFE
BET 75207SSTF
16
Seal Retainer Plug
1
303 Stainless
BET 75190SL
17
Piston O-Ring Seal
1
Tef-Sil
BET 75206TS
18
Piston Holder
1
316 Stainless
BET 75137SS
19
Indicator Pins
2
304 Stainless
BET 16133SL
20
Seal Washer
1
Fiber
BET 9Z6185
21
Bearing
1
Carbon PTFE
BET 75455TF
To locate the Polar Service Center nearest you, please call 1-877-534-2076 west of the Continental Divide and 1-800-955-8558 east of the Continental divide or visit our website at: www.polarcorp.com 1-45
Chemical Trailer Parts Catalog Hydraulic Valves