Pressure Relief Valve(NK-BV13 Series)

- Pressure Setting : 22mm H2O to 10,000mm H2O
- Size : 2” through 12”
- Available in Aluminum, Carbon Steel, Stainless Steel.
- Other size and material to be consult by factory.

INTRODUCTION

Pressure relief valves are used on liquid storage tanks and other process vessels or systems to
prevent structural damage due to excess internal pressure.
Storage tanks are pressurized when liquid is pumped in, compressing the existing vapor or
when rising temperatures cause increased evaporation or expansion of existing vapor.
To prevent tank damage, vapor must be allowed into or out of the tank at specified pressure condition.

The volume rate of venting depends upon the tank size, volatility of the tank contents, the pumping rates and

the temperature.

DESIGN AND FUNCTION

Tank protection equipment typically includes an operating valve which is designed to
provide pressure relief under normal pump in thermal breathing conditions.

 Pressure Relief
: As the pressure in the storage tank increases. When the set pressure is reached, the
pressure pallet lifts and relieves to atmosphere (or to a header if it a pipe away valve).

 

DRAWING AND DIMENSION