627 Series
14
15. Position the replacement diaphragm (key 23)
on the connector assembly (key 21), install the
diaphragm head (key 24) and connector nut
(key 22), then torque to 17 foot-pounds / 23 N•m.
16.
If necessary, replace the guide retainer O-ring
(key 48) and, set the guide retainer (key 26) aside,
ready for assembly.
17.
On the pusher post (key 19) install the relief
seal O-ring (key 28) and apply lubricant. Also,
install the relief seal retainer (key 47), diaphragm
connector assembly (key 21, with attached parts)
relief spring (key 27), upper relief spring seat
(key 33), and guide retainer (key 26). Torque the
guide retainer (key 26) to 3 foot-pounds / 4.1 N•m.
18. Hook the pusher post (key 19) (with attached
parts) on the lever (key 15) to check the
alignment of the holes in the diaphragm with the
holes in the spring casing. If the holes do not
line up, unhook the pusher post from the lever,
hold the pusher post, and rotate the diaphragm
to the correct position.
19. Install the lower spring seat (key 31) over the relief
spring so it rests flat on the connector nut (key 22).
20. Insert the diaphragm assembly into the diaphragm
casing (key 5) and hook the pusher post on the
lever (key 15).
21. Install the control spring (key 32) and upper spring
seat (key 33), and apply lubricant to the upper
spring seat (key 33).
22. Install the spring case (key 29) so that the
screened vent assembly (key 30) is in the correct
position for the application. Place the nameplates
over the screw holes, insert the spring case cap
screws (key 37), and finger tighten.
23. Screw in the adjusting screw (key 35) to put slack
into the diaphragm (key 23).
24.
Using a crisscross pattern, finish tightening the
spring case cap screws (key 37) to 7 foot-pounds /
9.5 N•m of torque.
25. If necessary, refer to the installation and/or the
Startup and Adjustment procedures.
26. Install the adjusting locknut (key 34) after
regulator adjustment.
Parts List
Note
In this parts list, parts marked NACE are
intended for corrosion-resistant service
as detailed in the NACE International
Standard MR0175.
Key Description
Part Number
Type 627 Parts Kit with Aluminum/Nitrile (NBR) trim
(include keys 4, 9, 11, 12, and 23)
R627X000A12
Type 627 Parts Kit with Stainless steel/
Nitrile (NBR) trim
(include keys 4, 9, 11, 12, and 23)
R627X000S12
Type 627H Parts Kit with SST/Nylon (PA) trim
R627HX00S12
Type 627R Parts Kit with Aluminum/
Nitrile (NBR) trim
(include keys 4, 9, 11, 12, 23, 28, and 48)
R627RX00A12
Type 627R Parts Kit with Stainless steel/
Nitrile (NBR) trim
(include keys 4, 9, 11, 12, 23, 28, and 48)
R627RX00S12
1
Body
(1)
Ductile iron
1000 psig / 69.0 bar maximum inlet pressure
3/4 NPT
30B3046X012
1 NPT
30B3048X012
2 NPT
30B3096X012
Ductile iron (Long Body)
1000 psig / 69.0 bar maximum inlet pressure
1 NPT
39B2451X012
2 NPT
39B0414X012
Steel
2000 psig / 138 bar maximum inlet pressure
3/4 NPT
30B3050X012
1 NPT
30B3051X012
2 NPT
30B7452X012
Steel (Long Body)
2000 psig / 138 bar maximum inlet pressure
1 NPT
39B0412X012
2 NPT
39B0415X012
Steel, CL600 RF flanged
1500 psig / 103 bar maximum inlet pressure
NPS 1 / DN 25
40B6754X012
NPS 2 / DN 50
40B6756X012
Steel, CL300 RF flanged
750 psig / 51.7 bar maximum inlet pressure
NPS 1 / DN 25
41B8978X012
NPS 2 / DN 50
41B8080X012
1. Bodies can be used for both standard and NACE constructions.
Parts ordering
When corresponding with your local Sales Office about
this equipment, always reference the equipment serial
number or FS number that can be found on
the nameplate.
When ordering replacement parts, reference the key
number of each needed part as found in the following
parts list. Separate kits containing all recommended
spare parts are available.