3
Type LR128
Figure 1.
Type LR128 Main Valve Assembly
Figure 2.
Type MR98H Pilot Assembly
GF04916
*Recommended spare part
*Recommended spare part
Parts List
Type LR128 Main Valve
Key Description
1
Valve Body
2
Bonnet Assembly
3
Cap Screw
4
Hex Nut
5
Top Plug
6*
O-ring
7
Cage
8*
Cage O-ring
9*
Diaphragm
10
O-ring
11
Bottom Plug
12
Main Valve Spring
14* Top Plug O-ring
13
Flanged Hex Nut
15
Stem
16* Back-up Ring
17
Upper Spring Seat
18* O-ring
19
Indicator Fitting
20
Indicator Washer
21
Indicator Cover
22
Indicator Protector
23
Inlet Strainer
24
Nameplate
25
Flow Arrow
26
Drive Screw
28* O-ring
63
Pipe Plug
70* O-ring
129 Socket Head Screw
130 Lock Washer
Type MR98H Pilot
Key Description
1
Regulator Body
2
Spring Case
3*
Orifice
4*
Valve Plug
5
Bottom Plug
7
Valve Plug Guide
8
Lower Spring Seat
9
Upper Spring Seat
10
Pusher Post
11
Regulator Spring
12* Diaphragm
15
Adjusting Screw
16
Cap Screw
17
Jam Nut
28
Lock Washer
29* Gasket
31
Locknut
58
Washer
63* Bottom Seal Plug
DN 25 / 1 IN. BODY SIZE
DN 50, 80 AND 100 / 2, 3 AND 4 IN. BODY SIZES
APPLY LuBRICANT / SEALANT
(1)
:
L1 = LITHIuM POLYMER TYPE LuBRICANT (MuLTI-PuRPOSE GREASE)
L2 = ANTI-SEIZE LuBRICANT
S = MEDIuM STRENGTH THREADLOCkER
APPLY LuBRICANT / SEALANT
(1)
:
L1 = GENERAL PuRPOSE PTFE OR LITHIuM GREASE FOR O-RINGS
L2 = ANTI - SEIZE COMPOuND
L4 = GRAPHITE SEALANT FOR GRAPHITE RING
1. Lubricants and sealants must be selected such that they meet the temperature requirements.
2. Apply L2 (anti-seize compound) on key 16 for stainless steel bolts.
3. Apply L4 (graphite sealant) instead of L1 (general purpose PTFE or lithium grease) on key 63 for graphite ring.
1.
Lubricants and sealant must be selected such that they meet the temperature requirements.
49B6019_A
48B2142_C
3
24
26
25
22
15
4
6
18
16
63
12
28
9
130
1
23
21
20
19
17
2
14
L2
5
70
10
11
129
7
8
L1
L1
L1
L2
L1
L1
21
20
19
17
2
14
L2
5
70
10
11
7
8
L1
L1
S
S
22
15
4
6
18
16
63
12
28
9
13
1
23
L1
L1
L2
L2 15
17
11
31
29
L2 10
L2
(2)
16
12
28
58
63
2
9
L2
7
3
5
8
1
4
OR
(3)
L1
L4
L2
L2
L2
