Pressure Relief & Pressure Sustaining Valve : Model 133-010

  it is installed at bypass of the pipe line in order to prevent damage on pipe by discharging high pressured water to atmosphere once the pipe pressure increased higher than the pre-set pressure, and strengthen the maintenance of constant pressure at the inlet pressure within the pre-set pressure. ☞ Detail   

Pressure Relief/Pressure Sustaining & Check Valve : Model 133-020 

  It is installed at bypass of the pipe line in order to prevent damage on pipe by discharging high pressured water to atmosphere once the pipe pressure increased higher than the pre-set pressure, and strengthen the maintenance of constant pressure at the inlet pressure within the pre-set pressure.  ☞ Detail

 Pressure Relief/Pressure Sustaining & Solenoid On-Off Valve : Model 133-030

  It is installed at bypass of the pipe line in order to prevent damage on pipe by discharging high pressured water to atmosphere once the pipe pressure increased higher than the pre-set pressure, and maintains constant inlet pressure within the pre-set pressure.
  It is a pressure relief/pressure sustaining/solenoid on-off valve that can
control basic valve closing and opening remotely by controling solenoid 
pilot valve electrically. ☞ Detail

 Pressure Relief & Surge Anticipator Valve : Model 133-040 

  This valve is installed at Bypass line for protecing pumps and pipe-line systems from dangerous surges caused by rapid chagnes of flow velocity in a pipeline. ☞ Detail