BS 7504:1995
Hydraulic fluid power - Four-screw, one-piece square flange connections for use at pressures of 25 MPa and 40 MPa (250 bar and 400 bar)

Standard No.

BS 7504:1995

Release Date

1995

Published By

British Standards Institution (BSI)

Latest

BS 7504:1995

Scope

This International Standard gives complete general and dimensional specifications for four-screw, one-piece square-flange connections for use at pressures of 25 MPa and 40 MPa (250 bar and 400 bar). For flange connections, a design factor of 2,5 is valid, not including weld joints, for which special in-structions exist. This International Standard also specifies the dimen-sions of the seals to be used, as well as the grooves to house the seals. These connections are intended for application in hy-draulic systems, on industrial and commercial prod-ucts, where it is desired to avoid the use of threaded connections. Surges of pressure higher than the nominal ratings will reduce the ability of the flange connections to re-tain the hydraulic fluid and this should be taken into account in the design of the hydraulic system. note:1) 1 bar = 0,1 MPa = 10 Pa; 1 Pa = 1 N/m

BS 7504:1995 history

• 1995 BS 7504:1995 Hydraulic fluid power - Four-screw, one-piece square flange connections for use at pressures of 25 MPa and 40 MPa (250 bar and 400 bar)