Emerson OSE Series, Instruction Manual

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7
Type OSE
• Precaution should be taken when removing or replacing
the valve plug to avoid damaging the segments
• Lubricate screws before tightening
• Lubricate O-rings (silicone grease) except for the valve
plug O-ring
• Lightly lubricate the stem (silicone grease)
• Lubricate the release relay mechanism (yoke and bolt)
(molybdenum graphite grease)
• Lubricate the BMS spring (molybdenum graphite grease)
A special tool is required when installing a new ori fi ce
Table 7.
Troubleshooting for Type OSE Slam-Shut Valve
Table 5.
Torques for Connecting Part Screw
(key 10, Fig. 7)
DN Dimensions Spanner (inches)
Torque
(N.m)
25 9/16-12
X
1 3/4 13/16’’ 110
50 1/2-13
X
1 1/2 3/4’’ 110
80 5/8-11
X
1 3/4 15/16’’ 175
100 3/4-10
X
2 1/4 1’’1/8 260
150 1-8
X
2 3/4 1’’1/2 510
C58a
Table 6.
Torques for Bypass (key 1. Fig. 7)
DN Torque (N.m)
25 14
50 14
80 20
100 24
150 24
C58b C58c
Key Torque (N.m)
9
15
14
Table 4.
Torques (key 9 & 14, Fig. 7)
SYMPTOMS CAUSE ACTIONS
If the valve will not close Operating fault
Check the release relay
Check the valve plug
or contact after-sales
If the valve closes Operating correctly
Observe the evolution of the outlet pressure
(check tightness)
If the outlet pressure in the slam shut is
decreases
External leak
Locate and seal the leak
or contact after-sales
If the outlet pressure in the slam shut is
constant
Bleed off the outlet side of the regulator
Observe the evolution of the outlet pressure
(check tightness)
If the outlet pressure increases Internal leak
Check the slam shut valve plug
Check the ori fi ce
Check the bypass
or contact after-sales
Key Description DN 25 DN 50 DN 80 DN 100 DN 150
1 Bypasse 180977
2 Valve plug O-ring 400257 400263 400258 400260 400261
3 Segments 401950 401951 401952 401953 401954
4 O-ring 400298 400295 400297 400296 19B0359X12
5 O-ring 400009 400024 400259 400045 400262
Packing gland “Kit” 197395
Set of O-rings* 197447 197448 197449 197450 197451
Spare parts kit** 197452 197453 197454 197455 197456
Release Relay Type OS2 See D103683X012 manual
(*) Set of O-rings and segments including O-rings key 2, 3, 4, 5 (**) Spare-parts kit including set of O-rings, bypass (key 1) and bypass disassembly spanner
Table 8.
Spare Parts for Type OSE Slam-Shut Valve
SPARE PARTS