Pressure Vacuum Relief Valve(MODEL : NK-BVF70 Series)

Introduction

PRESSURE and VACUUM RELIEF VALVE MODEL NK-BV12, NK-BV15 Pressure and Vacuum Settings : 22 mm H2O to 10,000 mm

 H2O Size : 2" through 12" Available in aluminum, carbon steel, stainless steel, fiber glass and other materials.

MODEL NK-BV12, NK-BV15 is designed to protect the low pressure tank from damage...A combination of the model NK-BV12,

NK-BV15 pressure vacuum relief valve and model NK-FA21 flame arrester make up the model NK-BVF60, NK-BVF70.

The model NK-BVF70 combination units are used for pressure vacuum relief where vapors must be piped away.

The bank assemblies are designed of wafer design for easy removal from the housing to facilitate inspection and cleaning.

A combination of the model NK-BV12, NK-BV15 pressure vacuum relief valve and model NK-FA21
flame arrester make up the model NK-BVF60, NK-BVF70. The model NK-BVF70 combination units
are used for pressure vacuum relief where vapors must be piped away.
The bank assemblies are designed of wafer design for easy removal from the housing to
facilitate inspection and cleaning.

Pressure Relief 

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

Vacuum Relief
: As a vacuum is drawn in the storage tank (for example, when fluid is being pumped out),
the pressure pallet is held shut by atmospheric pressure. When the vacuum setting is
reached, the pallet lifts and air is drawn in the storage tank from the atmosphere.

DRAWING AND DIMENSION