Eccentric shear seal cartridge valve

Claim 2

In combination: a. a hollow cartridge cage open at its top for reception of a control member; b. a collar projecting eccentrically downwardly from the bottom of the cage; c. the bottom of said cage having an opening registering with the collar; d. a generally tubular seal member fitted to the collar with its upper end projecting through the said bottom opening and with its lower end projecting downwardly beyond said collar; e. a valve body having a chamber into which said cage is fitted as well as a recess accommodating said collar and seal member; said valve body recess having an inlet registering with said lower end of said seal member and having an outlet registering with the cage; f. an angularly movable control member in the cage and having a lower flat surface opposed to, and in engagement with, the said upper end of said tubular seal member; said control member having a passageway opening at one end at said flat surface to transit the upper end of said seal member, and opening at the other end at a place to register with said body outlet; and g. clamp means urging the said cage and control member downwardly to force said lower end of said tubular seal member against the said valve body recess and the said control member flat surface into engagement with the said upper end of said tubular seal member whereby static and dynamic valve seals are both provided by said tubular seal member.

Claim 3

The combination as set forth in claim 1 together with releasable snap latch means between said collar and said seal member for unit insertion and removal.

Claim 4

The combination as set forth in claim 1 in which said seal member has an internal recess for entry of inlet fluid, said recess forming inwardly directed lips at the top and bottom for outward flexure and increased sealing under the influence of the pressure of said inlet fluid.

Claim 5

The combination as set forth in claim 1 in which said control member has an operating stem extending outwardly of said body chamber; said clamping means comprising a nut surrounding said stem and engaging both said cage and said control member at its inner eNd.

Claim 6

The combination as set forth in claim 1 in which said collar circumscribes said seal member.

Claim 7

In combination: a. a hollow cartridge cage open at its top for reception of a control member; said cage having a lateral opening; b. a collar projecting eccentrically downwardly from the bottom of the cage; the bottom of said cage having an opening registering with the collar; said opening being smaller than the collar to provide a flange at the base of the collar; c. a generally tubular seal member fitted into the collar and having an upper projection extending through said bottom cage opening; said tubular seal member having its lower end projecting downwardly beyond said collar; d. a valve body having a chamber into which said cage is fitted as well as a recess accommodating said collar and seal member; said valve body recess having an inlet registering with said lower end of said seal member with said seal member engaging the edges of said recess about the inlet; e. an angularly movable control member having a lower plug part and an upper reduced stem part, the lower plug part being guided by the cage for angular movement therein; said plug part having a lower flat surface opposed to, and in engagement with, said upper end of said tubular seal member; said plug part having a passageway opening at said flat surface to transit the upper end of said seal member, and opening at the other end at a place to register with said lateral opening of said hollow cage and body outlet; said plug part having a shoulder at the base of said stem part; f. a hollow nut surrounding said stem part with its inner end positioned to engage both said shoulder and the upper end of said cage, said but being in threaded engagement with the valve body at the upper end of said chamber to clamp said cage to said body and to confine said plug part against said tubular seal member whereby a static seal is achieved at one end of said seal member and a dynamic seal at the other.

Claim 8

In combination: a. a hollow cartridge cage open at its top for reception of a control member; said cage having a lateral opening; b. a collar projecting eccentrically downwardly from the bottom of the cage; the bottom of said cage having an opening registering with the collar; said opening being smaller than the collar to provide a flange at the base of the collar; c. a generally tubular seal member fitted into the collar and having an upper projection extending through said bottom cage opening; said tubular seal member having its lower end projecting downwardly beyond said collar; d. a valve body having a chamber into which said cage is fitted as well as a recess accommodating said collar and seal member; said valve body recess having an inlet registering with said lower end of said seal member with said seal member engaging the edges of said recess about the inlet; e. an angularly movable control member having a lower plug part and an upper reduced stem part, the lower plug part being guided by the cage for angular movement therein; said plug part having a lower flat surface opposed to, and in engagement with, said upper end of said tubular seal member; said plug part having a passageway opening at said flat surface to transit the upper end of said seal member, and opening at the other end at a place to register with said lateral opening of said hollow cage and body outlet; said plug part having a shoulder at the base of said stem part; f. a hollow nut surrounding said stem part with its inner end positioned to engage both said shoulder and the upper end of said cage, said but being in threaded engagement with the valve body at the upper end of said chamber to clamp said cage to said body and to confine said plug part against said tubular seal member whereby a static seal is achieved at one end of said seal member and a dynamic seal at the other.

Claim 9

The combination as set forth in claim 6 together with an operating handle detachably connected to said stem and circumscribing that part of the body accommodating nut.

Claim 10

The combination as set forth in claim 7 together with stop means operative between the handle and the body to determine OFF and ON positions of said plug part.

Claim 11

The combination as set forth in claim 6 in which said seal member has an internal annular recess forming a lip at the bottom of the seal member subject to the pressure of the inlet fluid to assist in the establishment of said static seal.