W Series Safety valve is used for power plant boilers, pressure containers, pressure and temperature reducing devices and other facilities. It has the following special features: Simple Structure, High Sealing Performance, Precise Opening Pressure, High Discharging Capacity, Low Back Seat Pressure Differential, Easy Adjusting, etc.

W Series Safety Valve Structure Briefing

1. It has the following special features: Simple Structure, High Sealing Performance, Precise Opening Pressure, High Discharging,  Low Back Seat Pressure Differential, Easy Adjusting, etc.

2. Nozzle Type Seat: It is the Laware Nozzle Type Seat. The Speed of the steam reaches the velocity of sound when passing the exit way of the seat; the sealed surface of the seat is made of hard alloy of cobalt by overlaying welding. Large discharge coefficient, fine abilities of anti-friction and corrosion resistance and long durability are recognized.

3. Thermo elastic disc: The disc is of thermo elastic structure. Taking the advantage of its minor out-of-shape feature when under the medium pressure, the seal ability has been raised, and the problem that pre-discharge phenomenon of the main safety happens when the medium pressure approaching the set pressure has been overcome. The sealed surface of the disc has adopted the advanced technology of heat hardening to increase the hardness and the ability of anti-friction and corrosion resistance.

4. Adjusting nut: Adjust the compression amount of spring by using set nut so that the valve can acquire appropriate set pressure rapidly and easily.

5  Back pressure adjusting sleeve: it is an auxiliary apparaturs that serves to adjust the back pressure o the disc to acquire appropriate differential pressure for seat returning. If adjust upward, the back pressure of valve reduces. If adjjust downward, the back pressure rises.