Valve manifold for a differential pressure transmitter

Details Valve manifold for a differential pressure transmitter Valve manifold for a differential pressure transmitter

F - Mech Eng,Light,Heat,Weapons

16

K

137/126

F16K 11/087 (2006.01) G01F 15/18 (2006.01) G01L 19/00 (2006.01)

Patent

CA 1260799

ABSTRACT OF THE DISCLOSURE A valve manifold (18) between a main flow line (10) and a differential pressure transmitter (24) having a body (40) with a bore (48) in which three spherical ball valve members (72, 74, 76) are mounted for rotation among run, zero and calibration positions. A low pressure cali- brating port (28) and a high pressure calibrating port (46) are controlled by calibration valve member (76). Low pressure calibrating port (28) is connected to a source of a predetermined low pressure calibrating fluid and high pressure calibrating fluid port (46) is connected to a source of a predetermined high pressure calibrating fluid to calibrate transmitter (24) between any desired low pressure and high pressure ranges. Low pressure cali- brating port (28) and high pressure calibrating port (46) may be selectively connected to atmospheric pressure if desired and the calibrating fluids may be controlled from a remote control site (26).

501436

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