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rxz123
#1 Posted : 06 November 2018 07:08:17(UTC)
rxz123

Rank: Advanced Member

Joined: 25/11/2016(UTC)
Posts: 716

two is a fragmentary Wholesale Patriots Hats , leading strategy view, partially sectioned, of the ball valve shown in FIG. 1.


FIG. 3 is a sectional view taken along the line 3–3 in FIG. 2.


FIG. four is a perspective view, in decreased scale, of the sealing ring incorporated within the valve shown in FIG. 1


FIG. five is really a side elevation view Wholesale Patriots Hoodies , partially sectioned, of an alternate construction for the disc.


FIG. 6 is an end view of the disc shown in FIG. 5.


DESCRIPTION OF THE PREFERRED EMBODIMENTS


Illustrated in FIGS. 1-4 is a ball valve 10 especially adapted for use in high fluid pressure systems and such as a body 12 having a cylindrical bore 14 which defines a flow passage extending straight via body 12. The opposite ends of valve body 12 can be flanged or otherwise formed in a conventional manner for connection with associated piping.


A generally circular valve member or disc 16 is rotatably mounted inside the valve bore 14 for shutting off flow. Situated on disc 16 are a pair of diametrically opposed, enlarged hubs 18 and 20 which are aligned with respective coaxial, circular openings 22 and 24 provided in valve body 12. Disc hub 18 has a cylindrical recess 26 for rotatably receiving the inner end portion of a cylindrical shaft or stem 28 which extends via opening 22 and is secured to valve body 12 by suitable fastening means, like a pin 30. Disc hub 20 has recess 32 for receiving the inner end of a shaft or stem 34 which is rotatably mounted within the valve body opening 24 and has an outer end portion 36 extending radially outwardly beyond the valve body 12. Although other arrangements can be used Wholesale Patriots Shirts , in the particular construction illustrated, recess 32 and the inner end portion of stem 34 have complementary cross sections (e.g., square cross sections) and stem 34 is journaled in valve body 12 by a cylindrical bearing sleeve 38 which fits tightly about stem 34 and is rotatably received within valve body opening 24. Bearing sleeve 38 can be created from any suitable low-friction bearing material, such as Teflon, glass-filled nylon and the like.


A suitable actuator means Wholesale Patriots Jerseys , such as a deal with 40 (shown fragmentarily in FIG. 1), is attached to the outer end 36 of stem 34 for rotating disc 16, about the transverse pivot axis provided by stems 28 and 34, between a closed position where the plane of the disc is generally at a correct angle to the direction of flow (as shown in FIG. 1-3) and an open position (not shown) where the plane of the disc is substantially aligned with the direction of flow, i.e. Cheap Patriots Hats , 90.degree. from the closed position. Rotation of disc 16 is limited to 90.degree. by suitable stop lugs 42 (1 shown in FIG. 1) which restrict movement of deal with 40.


Situated within the valve body bore 14 is a continuous, internal recess or groove such as annular or circular portions 46 and 48 encircling or surrounding respective valve body openings 22 and 24 and diametrically opposed, usually semi-circular portions 50 and 52 extending circumferentially between and connected to circular groove portions 46 and 48. As best shown in FIGS. 1 and two, the inner or bottom wall 54 of every circular groove portion 46 and 48 is spherically shaped for purposes described below.

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