US 12,638,092 B2 · Pressure relief valve with dual-function spring

Abstract

A pressure relief valve includes a valve body having an inner wall defining a cylindrical bore. The inner wall includes a threaded region having a plurality of threads. The valve includes a pressure control calibration spring including a calibration portion and a force application portion. The calibration portion is threaded into the threads of the threaded region. The valve body includes an aperture in fluid communication with the cylindrical bore. An inner perimeter of the aperture defines a valve seat. A valve member is receivable on the valve seat. The force application portion urges the valve member into engagement with the valve seat and has a pitch that is greater than a pitch of the calibration portion. Rotation of the calibration portion in the threads of the threaded region of the valve body adjusts the spring force applied to the valve member by the force application portion.

Claims20

Dependent claims

A pressure relief valve comprising:

a valve body having a plurality of inner threads;
and
a valve spring that is a coil spring including a first portion and a second portion, the first portion have a first pitch and the second portion having a second pitch, wherein the second pitch is greater than the first pitch;
the first portion of the valve spring being threaded into the inner threads of the valve body;
the first pitch of the first portion of the valve spring being equal to a pitch of the inner threads of the valve body;
wherein rotation of the first portion of the valve spring in the inner threads of the valve body adjusts an axial position of the valve spring within the valve body, thereby adjusting an actuation pressure of the pressure relief valve.

3 more elements

Dependencies are inferred from the claim text.

Pressure relief valve with dual-function spring

Life of this patent

Pressure relief valve with dual-function spring

Life of this patent

Abstract

Claims20