All shut-off fittings can be secured onto walls, racks (72 mm grid) and vertical and horizontal pipes.

This offers the advantage when assembling a plant that the shut-off fittings can be secured first and the lines for the medium and differential pressure connected to them. It is then possible to check all connections for leaks and to blow out or flush the pipes in order to remove dirt (welding residues, shavings etc.).

Finally, when all piping is completed, the measuring instruments are screwed onto the shut-off fittings.

If an instrument has to be removed for maintenance, the fittings and pipes remain intact. Only the valves have to be closed. The gauge can then be detached and re-installed after servicing.

Classification according to pressure equipment directive (PED 2014/68/EU):

For gases of fluid group 1 and liquids of fluid group 1; compliance with requirements of article 4, paragraph 3 (sound engineering practice).

Standard IEC 61518

The flange connection between transmitter and valve manifold was modified in the standard IEC 61518. The only connection thread approved for use in the process flanges of the pressure transmitter is ⁷/₁₆?20 UNF.

The valve manifolds for M12 screws, including the accessory sets, have therefore been deleted.

Material acceptance test certificate to EN 10204-3.1

If a material acceptance certificate according to EN 10204-3.1 is required for ordering valve manifolds or shut-off fittings, be aware that one certificate is sufficient for each valve type ordered. This means that you will only be charged for one certificate in the cost calculations.

Minimum/maximum operating temperatures

The maximum operating temperatures are given for each value or valve manifold.

The minimum operating temperatures depend on the material used for the valves or valve manifold.
They are as follows:

Pressure transmitters with shut-off fittings – mounting examples

SITRANS P transmitter for gage pressure with double shut-off valve, SITRANS P pressure transmitter with multiway cock or 3-spindle valve manifold

SITRANS P transmitter for differential pressure with 3-way valve manifold, 3-spindle valve manifold or valve manifold combination DN 5/DN 8

SITRANS P pressure transmitter for differential pressure, mounted in protective box (available on request)

SITRANS P pressure transmitter mounted on "Monoflange" valve combination for direct connection to flanges (available on request)