ECS & CXT-E Control Valve Retrofit for SW Double Wall Heaters
Technical Instruction Document
TID-0140_0A
12/30/2014
AERCO International, Inc.
•
100 Oritani Dr.
•
Blauvelt, New York 10913
•
Phone: 800-526-0288
Page 28 of 58
3
18
39
38
37
33
42
40
43
BOTTOM PISTON RETAINING NUT
LOWER PILOT SEAT ASSEMBLY
TOP PISTON RETAINING NUT
1
3
122982
121618-1.50 (1.50 PARTS LIST)
PART NO.
ITEM
REQ
DESCRIPTION
DISC SEAT
DISC RETAINER
121543
121505
18
33
1
1
121510
121504
37
38
1
1
SEAT RETAINER (SEE NOTE 2)
43
TOP PISTON
BOTTOM PISTON
VALVE PLUG SHAFT
121501
121506
39
40
1
1
16838
121502
42
1
1
SEAT RETAINER (SEE NOTE 2)
TOP PISTON RETAINING NUT
LOWER PILOT SEAT ASSEMBLY
BOTTOM PISTON RETAINING NUT
42
DESCRIPTION
REQ
ITEM PART NO.
121618-2.00 (2.00 PARTS LIST)
DISC RETAINER
121505
122982
3
18
1
1
121532
121543
33
37
1
1
BOTTOM PISTON
TOP PISTON
DISC SEAT
121530
1
40
121506
121531
38
39
1
1
121529
1
VALVE PLUG SHAFT
16848
43
1
REQUIRED FOR 1.00 VALVE
NOTES:
121618-1.00 (1.00 PARTS LIST)
1
122982
3
PART NO.
ITEM
REQ
33
121543
121505
18
1
1
-
37
38
-
1
BOTTOM PISTON RETAINING NUT
DESCRIPTION
LOWER PILOT SEAT ASSEMBLY
TOP PISTON RETAINING NUT
SEAT RETAINER (SEE NOTE 1)
DISC SEAT
121539
39
40
1
TOP PISTON
42
43
121542
1
DISC RETAINER
121541
121540
BOTTOM PISTON
1
16849
1
VALVE PLUG SHAFT
SEAT RETAINER (SEE NOTE 2)
TOP PISTON RETAINING NUT
LOWER PILOT SEAT ASSEMBLY
BOTTOM PISTON RETAINING NUT
1
18
121505
121618-1.25 (1.25 PARTS LIST)
PART NO.
122982
3
ITEM
1
REQ
DESCRIPTION
DISC RETAINER
DISC SEAT
121513
121543
33
37
1
1
121527
38
39
1
VALVE PLUG SHAFT
BOTTOM PISTON
TOP PISTON
1
121525
42
121514
40
1
16839
43
1
121559
1
Figure 3-4. Valve Piston Assembly Kit (121618-[ ]) for 1.00” to 2.00” Valves