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Page 4 of 8 65178X-XXX-B (en)
PARTS LIST / 65178X-XXX-B
65178X-XXX-B COMMON PARTS
Item Description
(size)
(Qty) Part No. [Mtl]
1
Housing -
651780-XXX-B (downstream)
(1) 93534-1
[A]
651781-XXX-B (back pressure)
(1) 93534-2
[A]
2 Bolt
(7/16” - 20 x 5-1/2”)
(4) 93487-1 [C]
3 Washer
(7/16” i.d.)
(4) Y79-716 [C]
4 Washer
(1.162” o.d. x 0 .125” thick)
(1) 93485-1 [C]
5 Thrust Bearing
(1.173” o.d.)
(1) 93484-1 [C]
6 Adjusting Screw
(5/8” - 24, left hand)
(1) 93486-1 [C]
7 Plate (1) 93818 [SS]
8 Adjusting Nut (1) 93481-1 [C]
9
Spring -
65178X-XXA-B (green, 100 - 1250 in. lbs)
(1) 93477-1 [C]
65178X-XXB-B (red, 1000 - 3000 in. lbs)
(1) 93478-1 [C]
65178X-XXC-B (yellow, 2000 - 5000 in. lbs)
(1) 93026 [C]
10 Screw
(#10 - 32 x 7/8”)
(1) Y191-107 [C]
11 Lockwasher
(0.196” i.d.)
(1) Y14-10 [C]
12 Small Plate (1) 93820 [C]
13 Piston (1) 93821 [C]
Item Description
(size)
(Qty) Part No. [Mtl]
14 Screw
(7/16” - 20 x 7/8”)
(2) Y157-778 [C]
15 Plate (1) 93532-1 [C]
16 Diaphragm
(0.048” thick, cream)
(1) 93498-1 [H]
17 Diaphragm
(0.020” thick, white)
(1) 93497-1 [T]
18 “O” Ring
(3/32” x 1-3/8” o.d.)
(1) Y328-123 [T]
19 “O” Ring
(1/16” x 9/16” o.d.)
(1) Y328-13 [T]
20 3/8” Allen Wrench
(not shown)
(1) Y106-109 [C]
21 Flush-Out Plug
(not shown) used on models
651780-XXX-B only
(1) 93819 [C]
22 Spring Stop (1) 96348-5 [SS]
Indicates parts included in the dia-
phragm service kit
61962-1
Except models 651780-XXR-B
MATERIAL CODE
[A] = Aluminum [SS] = Stainless Steel
[C] = Carbon Steel [T] = PTFE
[H] - Hytrel®
NOTE: 637219-XXX-B rebuild kits include both 61962-1 diaphragm service kit and valve kit shown in the chart.
"Smart parts", keep these items on hand in addition to the service kits for fast repair and reduction of down time.
Includes item 46.
See note on page 7.
651780-XXX-B DOWNSTREAM REGULATORS
Flow / Size -XXX
Port Size
N.P.T.F. Ball Size
Rebuild Kit
Valve
Stem (40)
Valve Kit
(41, 42, 43, 44)
(see below)
Flow
Tube (45)
“O” Ring
(46)
Base
Plug Ass’y
(47)
Base (48)
Pipe Plug
(52) (2 req’d)
Standard
-A1X 3/8 0.1875” 637219-0A1-B 92985 62169 93489-1 93492-1 62168 93540-1 - - - - -
-A3X 3/8 0.1875” 637219-0A1-B 92985 62169 93489-1 93492-1 62168 93541-1 - - - - -
Hi-Flow
-B1X 3/8 0.250” 637219-0B1-B 92985 62237 93489-1 93492-1 62168 93540-1 - - - - -
-B3X 3/8 0.250” 637219-0B1-B 92985 62237 93489-1 93492-1 62168 93541-1 - - - - -
Mastic
-C1X 3/4 0.500” 637219-0C1-B 93778 61963-1 93490-1 93491-1 61956-1 93536-1 Y17-51-N
-C3X 3/4 0.500” 637219-0C1-B 93778 61963-1 93490-1 93491-1 61957-1 93537-1 Y17-51-S
651781-XXX-B BACK PRESSURE REGULATORS
Flow / Size -XXX
Port Size
N.P.T.F. Ball Size
Rebuild Kit
Valve
Stem (40)
Valve Kit
(41, 42)
(see below)
Flow
Tube (45)
“O” Ring
(46)
Base
Plug Ass’y
(47)
Base (48) Pipe Plug (52)
Hi-Flow
-B1X 3/8 0.250” 637219-1B1-B 93565-1 61985-1 93489-1 93492-1 62168 93540-1 - - - - -
-B3X 3/8 0.250” 637219-1B1-B 93565-1 61985-1 93489-1 93492-1 62168 93541-1 - - - - -
Mastic
-C1X 3/4 0.500” 637219-1C1-B 93518-1 61967-1 93490-1 93491-1 61956-1 93536-1 Y17-51-N
-C3X 3/4 0.500” 637219-1C1-B 93518-1 61967-1 93490-1 93491-1 61957-1 93537-1 Y17-51-S
DOWNSTREAM VALVE KITS
Valve
Kit
(41)
“O” Ring
(42)
Seat
(43)
Ball
(44)
Spring
61963-1 Y328-19 93522-1 93510-1 93480-1
62169 Y328-14 93885 93508-1 93881
62237 Y328-14 93558-1 93561-1 93881
BACK PRESSURE
VALVE KITS
Valve
Kit
(41)
“O” Ring
(42)
Seat
61967-1 Y328-19 93522-1
61985-1 Y328-14 93558-1