Emergency shut-off valve

Patent metadata

Field	Value
Publication number	US-9970568-B2
Application number	US-201715448936-A
Country	US
Kind code	B2
Filing date	Mar 3, 2017
Priority date	Apr 14, 2014
Publication date	May 15, 2018
Grant date	May 15, 2018

Abstract

An emergency shut-off valve includes a valve assembly positioned within a valve body and an actuator assembly operatively coupled to the valve assembly. A poppet is coupled to a shaft having a retaining member positioned within a slot in an arm of the poppet to prevent the poppet from being removed from the shaft. A gland has a first slot, a second slot opposite the first slot, where the first and second slots are configured to receive an end of a torsion spring, and a flange. An O-ring is positioned within a recess in the valve body at the outer surface to engage the flange to provide a seal between the gland and the valve body.

First claim

What is claimed is:

1. An emergency shut-off valve, comprising:
a valve body defining an inlet, an outlet, a valve port between the inlet and the outlet, and an aperture;
a valve assembly positioned partially within the valve body and extending through the aperture; and
an actuator assembly operatively coupled to the valve assembly to move the valve assembly between an open position and a closed position, wherein the valve assembly comprises:
a poppet disposed within the valve body and moveable between an open position that allows the flow of fluid through the valve body and a closed position that prevents the flow of fluid through the valve body, the poppet comprising an arm having a slot formed therethrough;
a rotatable shaft coupled to the poppet, the shaft comprising a retaining member positioned within the slot of the poppet to prevent the poppet from being removed from the shaft;
a gland including a generally cylindrical body, a bore formed through the body and sized to receive the shaft, a first slot formed through a first end of the body from the bore to an outer surface of the gland, a second slot formed through the first end of the body from the bore to the outer surface, the second slot positioned opposite the first slot and the first and second slots configured to receive an end of a torsion spring, and a flange extending from the outer surface of the gland; and
an O-ring positioned within a recess surrounding the aperture of the valve body at an outer surface of the valve body; wherein
the flange of the gland engages the O-ring to provide a seal between the gland and the valve body.

2. The emergency shut-off valve of claim 1 , wherein:
the shaft comprises a polygonal intermediate portion, the retaining member disposed in the intermediate portion of the shaft; and
the poppet comprises a polygonal aperture configured to receive and engage the intermediate portion of the shaft.

3. The emergency shut-off valve of claim 1 , wherein the retaining member comprises at least one of a spring pin, a screw, a pin, or a clip.

4. The emergency shut-off valve of claim 1 , wherein the torsion spring includes a cylindrical portion sized to receive the shaft, a first end engaging the poppet, and a second end engaging a gland, to bias the poppet into the closed position.

5. The emergency shut-off valve of claim 1 , wherein an outer surface of a second end of the gland defines at least one arcuate surface and at least one planar surface, the at least one arcuate surface and the at least one planar surface configured to align and mate with a recess formed in a retainer secured to the valve body.

6. A valve assembly for an emergency shut-off valve, the valve assembly comprising:
a gland including a generally cylindrical body;
a torsion spring that engages the gland at one end and engages a poppet of the emergency shut-off valve at an opposite end; and
a shaft, the shaft comprising:
a first end;
a polygonal first intermediate portion, the first intermediate portion configured to engage a poppet of the emergency shut-off valve and including a hole formed therein;
a retaining member positioned within the hole, the retaining member preventing the poppet from being removed from the shaft; and
a cylindrical second intermediate portion, the second intermediate portion positioned within a bore formed through the gland and within the torsion spring.

7. The shaft of claim 6 , wherein the retaining member comprises at least one of a spring pin, a screw, and a pin, clip.

8. The shaft of claim 6 , wherein the shaft further comprises a second end that engages an actuator of the emergency shut-off valve.

Assignees

• Emerson Process Man Regulator Technologies Inc

Inventors

• Jing Chen
• Feifei Ji

Classifications

• F16K51/00

  Other details not peculiar to particular types of valves or cut-off apparatus · CPC title

• F16K1/20

  with axis of rotation arranged externally of valve member · CPC title

• F16K31/60 Primary

  Handles {(form, features or function of taps or faucet handles for domestic plumbing installations E03C1/04)} · CPC title

• F16K31/44

  Mechanical actuating means · CPC title

• F16K31/563

  for rotating or pivoting valves · CPC title