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627B Series
KEY NUMBER
2
3
Cap Screw/Ductile iron, Steel or Stainless steel Casing
9
10
35
Cap Screw/Aluminum or Ductile iron Casing
37
Cap Screw/Steel or Stainless steel Casing
78
Key
Description
19
Pusher Post
For Type 627BM, Aluminum
For Type 627BMR, 316 Stainless steel
For Type 627BHM
316 Stainless steel
NACE
21
Diaphragm Connector (for Type 627BMR only)
Stainless steel
22
Diaphragm Connector nut (for Type 627BMR only)
Stainless steel
23*
Diaphragm
Nitrile (NBR)
For Type 627BM with Aluminum
or Ductile iron diaphragm case
For Type 627BM with Steel diaphragm case
For Type 627BMR with Aluminum
or Ductile iron diaphragm case
For Type 627BMR with Steel diaphragm case
For Type 627BHM with Steel diaphragm case
(diaphragm is Neoprene (CR) with
Nylon (PA) fabric)
24
Diaphragm Head
For Type 627BM, Plated steel
For Type 627BMR, Plated steel
For Type 627BHM, 416 Stainless steel
25
Relief Spring Seat (For Type 627BMR only)
Steel
26
Guide Retainer (For Type 627BMR only)
Stainless steel
27
Relief Spring (For Type 627BMR only)
Plated steel
28*
Relief Seal O-Ring (For Type 627BMR only)
29
Spring Case
For Type 627BM or 627BMR
Ductile iron
Steel
For Type 627BHM
Steel
30
Screened Vent Assembly, Plastic
31
Lower Spring Seat, Plated steel
For Type 627BM
For Type 627BMR
32
Control Spring, Plated steel
5 to 20 psig / 0.34 to 1.4 bar, Yellow
15 to 40 psig / 1.0 to 2.8 bar, Green
35 to 80 psig / 2.4 to 5.5 bar, Blue
70 to 150 psig / 4.8 to 10.3 bar, Red
140 to 250 psig range / 9.7 to 17.2 bar, Blue,
used for Type 627BHM
240 to 500 psig range / 16.5 to 34.5 bar, Red,
used for Type 627BHM
*Recommended spare part.
10
PART DESCRIPTION
Orifice
Disk Holder Assembly
Stem
Adjusting Screw
Spring Seat Retainer
Part Number
10B3098X012
ERAA51240A0
ERAA51241A1
ERAA51241A0
28B8832X012
10B7449X012
10B3069X012
10B8735X012
10B3068X012
10B8736X012
12B0178X012
1D666428982
10B3071X012
12B0175X012
10B7446X012
10B7450X012
10B6757X012
ERAA19157A0
30B3055X012
30B3102X012
30B3102X012
10B3093X012
1D666625072
20B3073X012
10B3076X012
10B3077X012
10B3078X012
10B3079X012
10B3078X012
10B3079X012
ADJUSTMENT TOOL
7/8 in. / 22.2 mm Socket
3/8 in. / 9.53 mm Hex/Allen Wrench
5/32 in. / 3.97 mm Hex/Allen Wrench
1/2 in. / 12.7 mm Socket
1/2 in. / 12.7 mm Adjustable End Wrench
1/4 in. / 6.35 mm Socket
3/8 in. / 9.53 mm Socket
3/8 in. / 9.53 mm Socket
Key
Description
33
Upper Spring Seat, Plated steel
34
Locknut, Plated steel
35
Adjusting Screw, Plated steel
For Types 627BM or 627BHM
For Type 627BMR
36
Adjusting Screw Cap, Plastic
37
Spring Case Cap Screw, Plated steel
(8 required)
For Aluminum or Ductile iron diaphragm case
For Steel diaphragm case
For Stainless steel case and body
For Aluminum case and SST body
For Type 627BHM, Steel diaphragm case
43
Blocked Throat, Stainless steel
44*
Blocked Throat O-ring
(For Types 627BM, 627BHM or 627BMR only),
Nitrile (NBR) (2 required)
45*
Blocked Throat Back-up Ring
For Types 627BM, 627BHM or 627BMR only),
Polytetrafluoroethylene (PTFE) (2 required)
46
Diaphragm Head Cap Screw, Steel
For Type 627BM
For Type 627BHM
47
Relief Seal Retainer (For Type 627BMR only)
Stainless steel
48*
Guide Retainer O-ring (For Type 627BMR only)
Nitrile (NBR)
49
Relief Indicator (For Type 627BR or
627BMR only), Rubber (not shown)
50
Diaphragm Limiter
(For Type 627BHM only)
51*
Diaphragm Limiter O-ring
(For Type 627BHM only)
52*
Pusher Post O-ring (2 required)
(For Type 627BHM only)
58
Pipe Plug, Zinc
67
Drive Screw, 18-8 Stainless steel
72
Pipe Plug, Zinc-plated steel
77
Spring Seat, Stainless steel
78
Spring Seat Reatiner, Stainless steel
79
Spring
Stainless steel
NACE
80*
O-ring (Disk Holder)
81*
O-ring (Stem - Small)
82*
O-ring (Stem - Large)
83*
Back-up Ring (Small)
84*
Back-up Ring (Large)
88*
O-Ring (Blocked Throat)
89*
Back-up Ring (Blocked Throat)
PART NUMBER
1C4252
1A5607
ERAA49120
ERAA51314
10B3081
1A3917
1A36832
ERAA50115
Part Number
1D667125072
1D667728982
10B3081X012
10B3080X012
20B3082X012
1A391724052
1A368324052
1A3683X0062
1A3917X0062
1A346424052
ERAA51294A0
ERAA19159A0
10B3106X012
1B290524052
1C379124052
10B7445X012
1D682506992
30B3100X012
22B0176X012
ERAA19160A5
1C853806992
1D8293T0022
1A368228982
1A767524662
ERAA50118A0
ERAA50115A0
ERAA50082A0
ERAA50061A0
ERAA49442A0
ERAA49363A0
ERAA49364A0
ERAA49365A0
ERAA49366A0
1D541506992
ERAA51338A0
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