High and low pressure safety valve A11F25C

  • High and low pressure safety valve A11F25C Manufacturers, High and low pressure safety valve A11F25C Factory, Supply High and low pressure safety valve A11F25C
  • High and low pressure safety valve A11F25C Manufacturers, High and low pressure safety valve A11F25C Factory, Supply High and low pressure safety valve A11F25C
  • High and low pressure safety valve A11F25C Manufacturers, High and low pressure safety valve A11F25C Factory, Supply High and low pressure safety valve A11F25C
  • High and low pressure safety valve A11F25C Manufacturers, High and low pressure safety valve A11F25C Factory, Supply High and low pressure safety valve A11F25C
  • High and low pressure safety valve A11F25C Manufacturers, High and low pressure safety valve A11F25C Factory, Supply High and low pressure safety valve A11F25C
High and low pressure safety valve A11F25C
  • XINRUIHUA
  • Shandong, China
  • about 30 days
  • 3000 pcs/month

The safety valve plays a safety role in the system. When the system pressure exceeds the specified value, the safety valve is opened, and a part of the gas / fluid in the system is discharged to the atmosphere / pipeline, so that the system pressure does not exceed the allowable value, thereby ensuring that the system does not cause an accident due to excessive pressure.

Cast steel safety valve for refrigeraiton

 

      The safety valve plays a safety role in the system. When the system pressure exceeds the specified value, the safety valve is opened, and a part of the gas / fluid in the system is discharged to the atmosphere / pipeline, so that the system pressure does not exceed the allowable value, thereby ensuring that the system does not cause an accident due to excessive pressure.


Technical Parameters


Model
A11F25C
Ambient temperature
-20 ~ 150 ℃
Set pressure
High pressure: 1.81 Mpa                low pressure: 1.23 Mpa
Using media
R717, R12 and R22
Material
Cast steel
Nominal pressure
2.5 Mpa
Nominal diameter
DN20 
Displacement coefficient
0.15


Adjustment of opening pressure:

① Before leaving the factory, the opening pressure of the safety valve should be adjusted one by one to the setting value required by the user. If the user proposes the spring working pressure level, it should be adjusted according to the lower limit of the pressure level.

② Before installing the safety valve on the protected equipment or before installation, the user must readjust it at the installation site to ensure that the set pressure value of the safety valve meets the requirements.

③ Within the range of spring working pressure level indicated on the nameplate, you can adjust the opening pressure by rotating the adjustment screw to change the spring compression.

④ Before rotating the adjusting screw, reduce the valve inlet pressure to less than 90% of the opening pressure to prevent the valve flap from being rotated when the adjusting screw is rotated, which may damage the sealing surface.

⑤ In order to ensure that the opening pressure value is accurate, the medium conditions such as medium type and temperature during adjustment should be as close to the actual operating conditions as possible. The type of medium changes, especially when the medium accumulation state is different (for example, from liquid phase to gas phase), and the opening pressure often changes. When the operating temperature increases, the opening pressure generally decreases. Therefore, when adjusted at normal temperature and used for high temperature, the set pressure value at normal temperature should be slightly higher than the required opening pressure value. How high is related to the choice of valve structure and material should be based on the manufacturer's instructions.

⑥ The conventional safety valve is used to fix the additional back pressure. When the opening pressure is adjusted after the inspection (the back pressure is atmospheric pressure at this time), the setting value should be the required opening pressure minus the additional back pressure.



Product details

safety valve

pressure safety valves

Installation and maintenance of safety valves

1. The installation position, height, and inlet and outlet directions must meet the design requirements. Note that the direction of medium flow should be consistent with the direction of the arrow marked on the valve body.

2. Visual inspection must be performed before valve installation.

3. All safety valves should be installed vertically.

4. There should be no resistance at the safety valve outlet to avoid pressure.

5. The safety valve should be specially tested and checked for tightness before installation.

6. The safety valve in use should be checked regularly.



hydraulic safety valvesafety valve




Related products:

Welding stop valve, Spring type micro-starting safety valves, Cast iron flange stop valve, Right angle stop valve, Ammonia shut-off valve, Solenoid valve, One way check valve, Full open safety valve, Relief valve, Welding throttle valve, Pressure gauge valve, Liquid level control float valve, ammonia pump, Air Curtain, Bypass valve



pressure safety valves

     Shandong Ruihua Refrigeration Equipment Co.,Ltd is found in 1989, as an engineering, manufacturing, installation and maintenance refrigeration equipment company. We can also provide environmental protection and energy saving refrigeration solutions in accordance with users' requirements.

hydraulic safety valve     Our main products include screw refrigeration compressors and accessories, piston refrigeration compressors and accessories, Industrial refrigeration system accessories, Cold storage installation accessories, Ammonia chemical protection products, Refrigeration instrument and gauge, mobile cold storage and so on.

safety valve

pressure safety valves


Get the latest price? We'll respond as soon as possible(within 12 hours)
close left right