WCB
Chrome SS
Overlay welding Ferrous alloy
Flexible graphite
5.Maintenance, installation and usage：
5.1The valves shall be kept in a dry and well-ventilated room, the both ends shall be covered. If itisrestored for a long period, it shall be regularly inspected to prevent from rust.
2)If the packing gland is not correctly assembled to stick the stem, the gland nuts willbe evenly loosened to restore a correct place.
3)If the thread of the stem or stem nuts is hurt, it will be removed off after having been disassembled.
5.6A Valve shall be kept in fully open or fully close position after it is installed. It shall not be used as a throttle valve to avoid wearing out its seating surfaces quickly because oferosion.
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Globe valve
O&M MANUAL
J41H-150LB DN15～150
Edited by
Date
Verified by
Date
Approved by
Date
DIRECTORY
1、Applications and Performance specification
6.3 Leakage occurs between bonnet flanges.
1) If the flange nuts are tightened loosely or unevenly, they will be evenly re-tightened.
2)If the faces of the flange are damaged or collected with dirt, they will be repaired orcleaned up.
6.2 Leakage occurs between the seating surfaces between the gate and seat.
1) If there is dirt between them, they will be cleaned by flush washing.
2)If the seating surfaces are damaged, they will be re-lapped, or machined and lappedafter weld deposition, and their surface roughness must be0.4μmand higher.
3.Main overall connection dimensions:
3.1Overall drawing
3.2Flange ends dimensions:
Model
NPS
DN
L
D
D1
D2
b
Z-d
H
W
kg
J41H-150LB
1/2
15
108
88.9
60.5
34.9
9.7
ห้องสมุดไป่ตู้4-16
169
125
3.8
5.4Its inspection packing whether compress tightly and ensure tightness of packing,meanwhileit don’t prevent stem rotated.
5.5A valve can be installed on pipes in any direction, but it should be easy to be checked and operated.。
2、Principle and structural description
3、Main overall dimensions and connecting dimensions
4、Material of main parts
5、Maintenance, installation and usage
3/4
20
117
98.5
70
43
11.2
4-16
180
125
4.2
1 1/2
40
165
127
98.5
73.2
12.7
4-16
347
180
13
2
50
203
152
120.7
92
15.9
4-19
356
180
21
5
125
356
254
216
186
23.9
8-22
463
350
86
6
150
406
279
241.5
216
6、Possible trouble and solution
7．Matters need attentions
1.Applications and Performance specification
1.1 Applications:
Globevalve usedfortheworktemperature ≤ 200℃water, steam, petroleum, petroleum productsmedium inpipeline, whichused toget throughorcut-offthe mediain pipeline.
3)If the gasket on flange is damaged, it will be replaced with a new one.
6.4 The stem cannot operate smoothly.
1) If the packing is over-tightened, please loosen the gland nuts properly and evenly.
25.5
8-22
541
355
113
4.Manly material：
Body、bonnet、disc
Stem
Sealing
Packing
Bolt
Nut
A105
Chrome SS
Overlay welding Ferrous alloy
Flexible graphite
ASTM
A193 B7
ASTM A194 2H
1.2Performance specifications:
Nominal dimension（NPS）
1/2”～6″
in
Pressure（Class）
150
Lb
Test pressure
Shell
3.1
MPa
Seal
2.2
Air
0.6
Application T
-29~425
ºC
Suitable medium
2.2The stembottom anddisc joint together,the top and the stem nut rotationjoint, the clockwisedirectly start rotatehand wheel, when stemdropping,jointing closely disc and seatsealing surface to prevent medium in pipeline.thediscshallrisingwhile hand wheelstartanti-clockwise to rotate thatwillconnectto the mediainpipeline,which meansopen.
2.3The Seat and disc sealing surface used in Stainless steel with overlay welding.
2.4Valve design and manufacture byAPI 6Dstandard；Face-to-face byANSI B16.10standard；Flange ends byANSI B16.5standard；Inspection and test by API 598standard；valve pressure-temperature level byASME B16.34 standard.
5.7Its moving parts shall be kept clean and regularly lubricated.
5.8The valve shallbe checked regularly after used, check the sealing surface，stem, gasket and packing haveworn outor not, If the damage to failure,itsshould be repaired or replacedpromptly.