Operational Manual
Type of product： Globe valve
Model Number： 6”-J41H-150LB
ZHEJIANG MAILON VALVE CO.,LTD
浙江迈隆阀门有限公司
Date:
1.Main Application: 1．1 Application
Such valve is mainly used as open and close device on the industrial pipelines for Petroluem, gas and
chemicals.
1．2 Range of Application
Temperature（℃） Medium Nominal pressure（LB） ■ -29~425 ■ without corrosive ■ 150 □ -29~595 □with corrosive □ 300 □ -46~345 □ others □ 400 □ -254~800 □ 600 □ others □ 900 □ 1500 2．Applicable standard □ ANSI
□ API □ MSS □ BS □ ASTM
■ others-(ASME B16.34) 3．specification specification Nominal □20 □50 □400 □100 ■150 □250 □420 □others pressurePN（bar） Applicable ■water ■steam ■oil ■gas □ liquid □others medium Applicable ■-29~425 □-29~595 □-46~345 □-254~800 □others Temperature（℃） shell 1.5PN water seat 1.1PN water Test backseat 1.1PN water Test pressureTest temperatuNormal Low 0.6 air （MPa） medium re（℃） pressure seat test by air 4．Main characteristics of design：
4．1 valve type： □ angle type ■through way type □ Y-type □ others
4．2 end connection：■ flange type □ welded type □ threaded type □ others 4．3 bonnet connection：■flanged □pressure retaining □welded □ others 4．4 seat：■ parallel type □wedge type □ others
4．5 disc：■ normal type □ balance type □ pilot-operated type □ others 4．6 Operation：■hand □electric □ others
4．7 The globe has backseat sealing construction,but should replace packing without pressure.
5．Main dimensionn and end connection：
6．Main parts and materials NMaterial Parts o. Carbon steel Alloy Stainless steel 1 Body □ A105 +13Cr □ A 217 WC6 □ A 351 CF8 ■ A 216 WCB □ A 217 WC9 □ A 351 CF8M □ A 350 LF2 □ others □ A 351 CF3 □ others □ A 351 CF3M □ others 2 Bonnet □ A105+13Cr □ A 217 WC6 □ A 351 CF8 ■ A 216 WCB □ A 217 WC9 □ A 351 CF8M □ A 350 LF2 □ others □ A 351 CF3 □ others □ A 351 CF3M □ others 3 Disc □ A105+13Cr □ A 217 WC6+STL □ A 351 CF8+STL ■ A 216 WCB+13Cr □ A 217 WC9+STL □ A 351 CF8M+STL □ A 350 LF2+STL □ others □ A 351 CF3+STL □ others □ A 351 CF3M+STL □ others 4 Stem ■ A 276 410 □ A 182 F316 □ A 182 F304 □ A 182 F6 □ MONEL □ A182 F304L □ others 5 bolt/nut □ A 193 B8/A 194 B □ A 320 L7/A 194-4 ■ A 193 B7/A 194-2H □ A 320 B8/A 194-8 □ others 6 Packing □ PTFE ■ flexible graphite □ O-ring □ others 7 Gasket □ PTFE ■ flexible graphite+SS □ SS □ others 7．Installation and usage 7．1 installation
7．1．1 The installation postion of the valve shall be covenient for operation and maintenance.
7．1．2 Before the installation of the valve,the following items must be checked whether they are in accordance with the usage condition:valve model number,performance specification,technical
requirement,nameplate and marking,installation direction,etc. Especially the installtion direction must be correct.
7．1．3 Before the installation,the dirt and rust in the cavity and on the sealing face shall be removed. 7．1．4 To check whether the bolt of the cover flange and the packing gland are tightened.To check the smoothness of the open and close operation.For valves with actuators,to check the travel position,to ensure the sealing but without overload.
7．2 Usage
7．2．1The valve is for open and close,not suitable for adjusting function.It is not permitted to use it over the temperature and pressure limitation.For high temperature application,the bolts should tightened periodically to prevent it from leaking.Less heat grad is necessary.For low temperature application,the impact overload stress concentration is not permitted.
7．2．2 For hand operated valve,the clockwise is close direction,and the anti-clockwise is open
direction.For the other operation types,the control device indication for open/close shall be consistent with the open/close direction of the valve. 8．Maintenance and storage 8．1 Maintenance
8．1．1 The valve in operation should be checked and maintained periodically to prevent it from rust and jamming.
8．1．2 If leakage pls check whether the middle flange and packing gland is loosed,although there are backseat sealing but should not replace packing with pressure;
8．1．3 If the internal leakage at the sealing faces is found,pls check whether the valve is fully closed
position.
8．1．4 When due time for maintenance of valve,all parts should be cleaned again to remove the dirt and
rust.And also to replace the damaged gasket and sealing rings,to lap and adjust the sealing
faces.After maintenance,pls make new pressure test.If the valve is fixed with safety device,the set pressure of the safety device should be re-set as less than 1.1times of the pressure-temperature value.
8．2 Storage
8．2．1 The valve should be stored in dired house.Stacked or stored in open air is forbidden.
8．2．2 The stored valve should have end covers for protection.The naked position of the stem should be
protected by oil paper,preventing from damaing.
8．2．3 For long time stored valve,it should be maintained periodically:to clean the dirt and rust,re-coat the anti-rust oil/grease,to check the flexibility of operation with no jamming.
