Specification :

Product Description
Specifications
1. Plug: Carbon steel
2. Bottom stem: Stainless steel
3. Valve core: Cast iron
4. Pin: Stainless steel
5. Shaft: Nylon/ bronze
6. Valve body: Cast iron
7. " O" rings: NBR
8. Spring rings/ cover: Cast iron
9. Top shaft stem: Stainless steal
10. Stroke: DN50-DN400
11. Nominal pressure: 1.0/ 1.6/ 2.5MPa
12. Seated test: 1.1PN
13. Crust test: 1.5N
14. Running temperature: NBR: -10~ 80º C
15. EPDM: -20~ 120º C
16.18months Guarantee, ISO9001, CE, FCC

Product Description
Use and maintenance:
The manual operation is banned during electrification
This product has passed completely-test and checkout conducted by quality-test workers before ex-factory. In the process of installation connection between product and valve, the valve maybe can' t be wholly opened and closed because of valve' s coupling problem etc, in this case, the readjusting is required, its process stated specifically as followings:
1. Firstly, installation and connecting correctly the execution device and valve;
2. Manually test-run:
Unload electric cover and handle-axle rubber stopper, then inserting enclosed hexagonal handle into hexagonal hole and rotating it in clockwise direction, the valve' s opening value would be reduced
When valve at wholly-closed position, please observe whether the limit stroke switch in" close" direction works or not( it will produce crack sound when working) , then rotate handle for semi-circle so as to check whether the mechanical stop touches regulation screw or not;
Rotating handle in anticlockwise direction and the valve' s opening value would increase, then like the operation above stated, operator should check the limit stroke and mechanical stop. After manually test-run, operator should install the electric cover and rubber stopper;
Electric test-run:
Unload wiring cover and doing wiring correctly to circuit drawing on cover;
Electrifying for test-run, operator should take notice of working circumstance of execution device and valve