# US 10,480,682 B2 · Strainer assembly for internal valve

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- Number: US 10,480,682 B2
- Document ID: US10480682B2
- Status: Granted
- Kind: B2
- Application number: 15/636,492
- Filed: 2017-06-28
- Published: 2018-09-13
- Granted: 2019-11-19
- Earliest claimed: 2017-03-10
- Assignees: Emerson Process Management Regulator Technologies, Inc.
- Applicants: Emerson Process Management Regulator Technologies, Inc.
- Inventors: FeiFei Ji; Li Li; Jing Chen
- Web page: https://patentgrep.com/patent/US10480682B2

## CPC

- F16K 27/0209: {Check valves or pivoted valves}
- B01D 35/28: Strainers not provided for elsewhere
- B65D 88/54: characterised by means facilitating filling or emptying
- F16K 1/30: specially adapted for pressure containers
- F16K 17/04: spring-loaded
- F16K 17/30: spring-loaded
- F16K 27/02: of lift valves (for reducing the flow resistance of screw-spindle lift-valves F16K1/06)
- F16K 27/07: of cutting-off parts of tanks, e.g. tank-cars
- F16K 31/52408: {comprising a lift valve}
- F16K 39/024: {using an auxiliary valve on the main valve}
- Y10T 137/7727: Excessive flow cut-off
- Y10T 137/8085: Hollow strainer, fluid inlet and outlet perpendicular to each other
- Y10T 137/86348: Tank with internally extending flow guide, pipe or conduit
- Y10T 137/86944: One valve seats against other valve [e.g., concentric valves]
- Y10T 137/86984: Actuator moves both valves
- F16K: VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING {(devices for emptying and evacuating the excess liquid in valves or conduits F16L55/07)}
- B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28)
- B65D: CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

An internal valve includes a valve stem disposed in a valve body, a poppet valve coupled to the stem, and a bleed valve coupled to the stem. The valve stem is shiftable from a first position in which the poppet valve and the bleed valve are closed, to a second position in which the bleed valve is open, and a third position in which the bleed valve is closed and the poppet valve is open, and the poppet may close in response to a pressure change. The internal valve includes a strainer having an extended portion to be positioned in a clearance space between an upper portion of the valve body and an opening of a fluid container. The strainer is arranged for securement to a mounting area of the valve body by at least one fastener.

## Claims

### Claim 1

An internal valve for connection to a fluid container, the fluid container having an opening surrounded by a mounting flange, the internal valve comprising:
a valve body having an upper portion having a diameter and sized to extend through the opening in the fluid container, the valve body including an inlet and an outlet;
the valve body including a flange arranged to permit the valve body to be mounted to the mounting flange of the container via flange fasteners;
a valve stem slidably disposed in the valve body;
a poppet valve including a poppet body, the poppet body operatively coupled to the valve stem by a first spring and including a poppet inlet and a poppet outlet, the poppet valve arranged to open and close the inlet of the valve body; and
a bleed valve operatively coupled to the valve stem and comprising a bleed disc movable between an open bleed position, in which the bleed disc opens the poppet inlet, and a closed bleed position, in which the bleed disc closes the poppet inlet,
wherein the diameter of the upper portion of the valve body is smaller than a diameter of the opening of the fluid container thereby forming a clearance space between the upper portion of the valve body and the opening of the fluid container,
wherein the upper portion of the valve body includes a mounting area, and including a strainer sized to surround at least a portion of the poppet valve and the bleed valve, the strainer including an extended portion sized to be positioned in the clearance space and arranged for securement to the mounting area by at least one fastener, and
wherein the valve stem extends through the poppet body, and wherein, when the bleed disc is in the open bleed position, the bleed disc is disposed outside of the poppet body.

### Claim 2 (depends on 1)

The internal valve of claim 1, wherein each of the at least one fasteners has a length, wherein the clearance space has a width, and wherein the length of each of the at least one fasteners is greater than the width of the clearance space.

### Claim 3 (depends on 2)

The internal valve of claim 2, wherein the length of each of the at least one fasteners is at least four times greater than the width of the clearance space.

### Claim 4 (depends on 1)

The internal valve of claim 1, wherein each of the at least one fasteners has a head having a depth, wherein the clearance space has a width, and wherein the depth of the head of each of the at least one fasteners is less than the width of the clearance space.

### Claim 5 (depends on 1)

The internal valve of claim 1, wherein the first spring has a first end seated against the poppet body and a second end, opposite the first end, seated against a spring seat carried by the valve stem.

### Claim 6 (depends on 1)

The internal valve of claim 1, further comprising a second spring disposed within the valve body and coupled to the valve stem.

### Claim 7 (depends on 1)

The internal valve of claim 1, wherein the first spring is disposed entirely within the poppet body.

### Claim 8

An internal valve for connection to a fluid container, the fluid container having an opening surrounded by a mounting flange, the internal valve comprising:
a valve body having an upper portion having a diameter and sized to extend through the opening in the fluid container, the valve body including an inlet and an outlet;
the valve body including a flange arranged to permit the valve body to be mounted directly to the mounting flange of the container via flange fasteners and a shoulder that is an upper surface of the flange arranged for sealing engagement with the mounting flange;
a valve stem slidably disposed in the valve body;
a poppet valve including a poppet body, the poppet body operatively coupled to the valve stem by a first spring and including a poppet inlet and a poppet outlet, the poppet valve arranged to open and close the inlet of the valve body; and
a bleed valve operatively coupled to the valve stem and arranged to open and close the poppet inlet,
wherein the flange of the valve body further comprises a recessed mounting area adjacent the shoulder, a clearance space formed between the shoulder and the recessed mounting area,
wherein the internal valve further includes a strainer sized to surround the poppet valve and the bleed valve, the strainer including an extended portion sized to be positioned in the clearance space and arranged for securement to the recessed mounting area by at least one fastener,
wherein the valve stem extends through the poppet body, and wherein the first spring has a first end seated against the poppet body and a second end, opposite the first end, seated against a spring seat carried by the valve stem, the spring seat being structurally separate and spaced from the bleed valve, and
wherein the bleed valve comprises a bleed disc movable between an open bleed position, in which the bleed disc opens the poppet inlet, and a closed bleed position, in which the bleed disc closes the poppet inlet, and wherein when the bleed disc is in the open bleed position, the bleed disc is disposed outside of the poppet body.

### Claim 9 (depends on 8)

The internal valve of claim 8, wherein each of the at least one fasteners has a length, wherein the clearance space has a height, and wherein the length of each of the at least one fasteners is greater than the height of the clearance space.

### Claim 10 (depends on 9)

The internal valve of claim 9, wherein the length of the at least one fasteners is at least four times greater than the height of the clearance space.

### Claim 11 (depends on 8)

The internal valve of claim 8, wherein each of the at least one fasteners has a head having a depth, wherein the clearance space has a height, and wherein the depth of the head of each of the fasteners is less than the height of the clearance space.

### Claim 12 (depends on 8)

The internal valve of claim 8, further comprising a second spring disposed within the valve body and coupled to the valve stem.

### Claim 13 (depends on 8)

The internal valve of claim 8, wherein the first spring is disposed entirely within the poppet body.

### Claim 14

An internal valve for connection to a fluid container, the fluid container having an opening surrounded by a mounting flange, the internal valve comprising:
a valve body having an upper portion having a diameter and sized to extend through the opening in the fluid container, the valve body including an inlet and an outlet;
the valve body including a flange arranged to permit the valve body to be mounted directly to the mounting flange of the container via flange fasteners;
a valve stem slidably disposed in the valve body;
a poppet valve including a poppet body, the poppet body operatively coupled to the valve stem by a first spring and including a poppet inlet and a poppet outlet, the poppet valve arranged to open and close the inlet of the valve body;
a bleed valve operatively coupled to the valve stem and arranged to open and close the poppet inlet; and
a second spring disposed within the valve body and coupled to the valve stem, the second spring being wholly disposed outside of the poppet body,
wherein the diameter of the upper portion of the valve body is smaller than a diameter of the opening of the fluid container thereby forming a clearance space between the upper portion of the valve body and the opening of the fluid container,
wherein the upper portion of the valve body includes a mounting area, and including a strainer sized to surround at least a portion of the poppet valve and the bleed valve, the strainer including an extended portion sized to be positioned in the clearance space and arranged for securement to the mounting area by a hoop, and
wherein the valve stem extends through the poppet body.

### Claim 15 (depends on 14)

The internal valve of claim 14, wherein the first spring has a first end seated against the poppet body and a second end, opposite the first end, seated against a spring seat carried by the valve stem.

### Claim 16 (depends on 14)

The internal valve of claim 14, wherein the first spring is disposed entirely within the poppet body.

### Claim 17 (depends on 14)

The internal valve of claim 14, wherein the bleed valve comprises a bleed disc movable between an open bleed position, in which the bleed disc opens the poppet inlet, and a closed bleed position, in which the bleed disc closes the poppet inlet, and wherein when the bleed disc is in the open bleed position, the bleed disc is disposed outside of the poppet body.