Abstract

There is disclosed herein a testable water meter (100) having a housing (1) with a conduit (2) extending therethrough and defining an inlet (3) and an outlet (4) positioned along a central axis of flow (A). A flow detector (5) is located intermediate the inlet (1) and the outlet (2) for detecting a volume of flow of a fluid passing through the conduit (2). Provided are one or more valves (10,13) for controlling flow through the conduit (2); and a plurality of test ports ( 6, 7, 8, 11) communicating with the conduit (2), wherein the test ports are positioned to allow for isolation and testing of one or more of: the flow detector (5), the valves (10, 13) individually, the valves (10, 13) as a group, and the meter overall.

IPC Classes  ?

• G01F 25/00 - Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
• G01F 1/00 - Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
• G01F 15/00 - Details of, or accessories for, apparatus of groups insofar as such details or appliances are not adapted to particular types of such apparatus

Abstract

A valve (10) is disclosed. The valve (10) has an inclined valve seat (14) defining a fluid aperture (18), and a valve head (20) for contact with the valve seat (14) for closure of the fluid aperture (18). A lever arm (22) is attached to the valve head (20). There are biasing means (32) operatively coupled to the lever (22) arm for urging the valve head (20) into contact with the valve seat (14), the biasing means (32) being arranged to provide decreased biasing on opening of the valve head (20) relative to the fluid aperture (18).

IPC Classes  ?

• F16K 15/00 - Check valves

Abstract

A valve (10) is disclosed. The valve (10) has an inclined valve seat (14) defining a fluid aperture (18), and a valve head (20) for contact with the valve seat (14) for closure of the fluid aperture (18). A lever arm (22) is attached to the valve head (20). There are biasing means (32) operatively coupled to the lever (22) arm for urging the valve head (20) into contact with the valve seat (14), the biasing means (32) being arranged to provide decreased biasing on opening of the valve head (20) relative to the fluid aperture (18).

IPC Classes  ?

• F16K 15/03 - Check valves with guided rigid valve members with a hinged closure member
• F16K 1/18 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure members with pivoted discs or flaps
• F16K 1/20 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure members with pivoted discs or flaps with axis of rotation arranged externally of valve member

Abstract

A valve (10) is disclosed comprising a valve housing (14) including a valve seat (12), a valve head (16) movably housed within the valve housing (14) for seating with the valve seat (12), and a lip seal (30) connected to either the valve head (16) or the valve seat (12). The lip seal (30) is configured to be hydraulically biased into contact with the valve seat (12) or the valve head (16) to maintain closure of the valve.

IPC Classes  ?

• F16K 17/02 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side
• F16K 13/08 - Arrangements for cutting-off
• F16K 15/16 - Check valves with flexible valve members with tongue-shaped laminae
• F16K 1/18 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure members with pivoted discs or flaps
• F16K 13/10 - Arrangements for cutting-off by means of liquid or granular medium
• F16K 17/04 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side spring-loaded
• F16K 1/44 - Details of seats or valve members of double-seat valves
• F16K 15/14 - Check valves with flexible valve members
• F16K 31/12 - Operating meansReleasing devices actuated by fluid

Abstract

A water valve assembly (10) is disclosed that comprises a valve housing (14) including a valve seat (12), and a valve head (16) being arranged to contact the valve seat (12). There is also resiliently deformable bellows (18) connected to the valve head (16) and defining a fluid passageway (26) about its outside surface. The bellows (18) urge the valve head (16) into contact with the valve seat (12) for closure of the valve (10).

IPC Classes  ?

• F16K 15/14 - Check valves with flexible valve members
• F16K 15/08 - Check valves with guided rigid valve members shaped as rings
• F16K 17/04 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side spring-loaded
• F16K 15/02 - Check valves with guided rigid valve members
• F16K 15/12 - Springs for ring valves
• F16K 24/04 - Devices, e.g. valves, for venting or aerating enclosures for venting only

Abstract

This invention relates generally to the manufacture of a product in the form of a valve. The general steps involved in manufacture of the valve (10) are as follows: (1). The valve (10) is formed in its initial configuration which is in a substantially unstressed condition; and (2). The valve in its initial configuration is at least partially inverted to provide the valve (10) in its operative and stressed condition.

IPC Classes  ?

• F16K 15/14 - Check valves with flexible valve members
• F16K 51/00 - Other details not peculiar to particular types of valves or cut-off apparatus