1 valve design and manufctyre according to GB/T 1234-89 requirements
2 the structure length, accordin to GB/T 12221-2005 of the provisions
3 the connection flange i accordance with the provisions of GB/T79
4 valve inspection and test according to GB/T 13927 requirement.
1 body: WCB
2 wedge: WCB+ STL
3 stem: 2Cr13
4 stud: 35CrMoA
5 nut: 45
6 valve cover: WCB
7 stem packing: graphite
8 cross selling: 35
9 cotter pin: 30
10 gland: WCB
11 support: WCB
12 handwheel: KTH300-08
molded flexible graphite is used for packing material. PTFE or combined packing material can be also used if being requested by the customer. The internal surface of the stuffing box, of which area is contacted with the packing, is of excellent finish. The stem surface, contacting with the packing, should be rolled and pressed after being precisely machined, so as to reach to the high finish and compactness and ensure the reliable tightness of the stem area.
the stem is of integral forged design. The minimum diameter of the stem shall per the standard requirement. The connection of the stem and disc is T type. The strenght of the connecting area is bigger than theta of the T threaded part of the stem. The strength test of that area cnforms to API 591.
Foshan Jianda Valve Pump Co., Ltd. was founded in 2000, running over 30 years and become one of the bigest in this business field.
The company runs as the modern modern management,efficient implementation of the team, jointed cooperation members as below:
FOSHAN SHANGJIU ELECTRICAL VALVE CO., LTD
FOSHAN ZHAOAN FIRE EQUIPMENT CO., LTD
FOSHAN DABENG VALVE & BOILER WHOLESALE DEPARTMENT
CHENCUN SHANGDA VALVE BUSINESS DEPARTMENT
These five branches distribute at each ... View detail