Table of Contents
Advertisement
Diaphragm Parts
1. Remove the closing cap (key 28), loosen the locknut
(key 11), and back out the adjusting screw (key 10)
to remove control spring (key 9) compression.
2. Remove the machine screws (key 12) and
separate the spring case (key 2) from the body
assembly (key 1). Remove the control spring
(key 9).
3. Remove the diaphragm assembly (key 7) and
inspect the removed parts and replace as
necessary. Make sure the restriction hole (key 44)
is free from debris.
4. Install the diaphragm assembly (key 7) and push
down on it to see if the inner valve assembly
(key 4) strokes smoothly and approximately
1/16-inch / 2.0 mm.
In step 5, if installing a control spring of
a different range from the one that was
removed, be sure to replace the spring
range originally appearing on the spring
case with the new spring range.
5. Stack the control spring (key 9) and control spring
seat (key 8) onto the diaphragm assembly (key 7).
Sparingly apply lubricant to the control spring seat.
6. Install the spring case (key 2) on the body (key 1)
with the vent (key 35) oriented to prevent clogging
or entrance of moisture. Install the machine
screws (key 12) and using a crisscross pattern,
torque them to 3 foot-pounds / 4.1 N•m.
7. When all Maintenance is complete, refer to the
Startup and Adjustment section to put the
regulator back into operation, and adjust the
pressure setting. Tighten the locknut (key 11),
and install the closing cap (key 28).
Parts Ordering
When corresponding with your local Sales Office or
representative about this regulator, reference the type
number which is found on the nameplate.
When ordering replacement parts, reference the key
number of each needed part as found in the following
parts list. Separate kit containing all recommended
spare parts is available.
*Recommended Spare Parts
Note
Parts List
Type 627F Main Regulator (Figure 3)
Key
Description
Type 627F Parts Kit (includes keys 4, 7, 9,
11, 12, 13, 23, 55, and 63)
Aluminum or Ductile iron casing
Stainless steel casing
1
Body
Ductile iron
3/4 NPT
1 NPT
2 NPT
Steel
3/4 NPT
1 NPT
2 NPT
Steel, CL150 RF Flanged
NPS 1 / DN 25
NPS 2 / DN 50
Steel, CL300 RF Flanged
NPS 1 / DN 25
NPS 2 / DN 50
Steel, CL600 RF Flanged
NPS 1 / DN 25
NPS 2 / DN 50
Steel, PN 16/25/40 RF Flanged
NPS 1 / DN 25
NPS 2 / DN 50
2*
Orifice
Aluminum
3/8 x 1/8 inch / 9.5 x 3.2 mm
3/8 x 1/4 inch / 9.5 x 6.4 mm
3/8 inch / 9.5 mm
1/2 inch / 13 mm
Stainless steel
3/8 x 1/8 inch / 9.5 x 3.2 mm
3/8 x 1/4 inch / 9.5 x 6.4 mm
3/8 inch / 9.5 mm
1/2 inch / 13 mm
3
Cap Screw (2 required)
Aluminum
Ductile iron
Steel
4*
Diaphragm Case O-Ring, Nitrile (NBR)
5
Diaphragm Case
Aluminum
Ductile iron
Steel
6
Boost Body, Aluminum
7*
O-Ring, Nitrile (NBR)
8
Stem Guide, Powdered metal
9*
Disk Assembly (for all orifice sizes)
Aluminum holder and Nitrile (NBR) disk
303 Stainless steel holder and Nitrile (NBR) disk
10
Stem, 416 Stainless steel
11*
Stem O-Ring, Nitrile (NBR)
12* Stem Backup Ring, Polytetrafluoroethylene
(PTFE) (2 required)
13
Hairpin Clip, Stainless steel
14
Drive Pin, Plated steel
15
Lever, Plated steel
16
Lever Retainer, Plated steel
17
Lever Pin, Stainless steel
18
Lever Cap Screw, Plated steel (2 required)
19A Pusher Post, Aluminum
19B Drive Pin, Stainless steel
Type 627F
Part Number
R627FX00A12
R627FX00S12
12B3307X012
12B3307X022
12B3308X012
30B3050X012
30B3051X012
30B7452X012
43B8656X022
44B0666X012
41B8978X012
41B8080X012
40B6754X012
40B6756X012
44B0386X012
44B3342X012
12B4986X012
12B4986X022
0B042209012
1A928809012
12B4986X032
12B4986X042
0B042235032
1A928835032
1A352524052
1A560724052
1A560724052
17A2325X022
40B3084X012
30B3053X012
30B3104X012
22B4767X012
1E547706992
20B3061X012
1C4248X0212
1C4248X0202
10B3059X012
1D687506992
1K786806992
10B3058X012
1H3671X0012
20B3063X012
30B3097X012
10B3083X012
10B7454X012
20B3064X012
14B0382X012
9
Advertisement
Table of Contents
