Industrial Automation Magazine India

Design

Conforms to ISA RP 3.2, DIN 1952, BS 1042, ISO-5167

Plate material

SS304, SS316, SS316L as standard. Hastelloy-C, Monel, PP, PVC, PTFE coated, etc. can be given on request.

Types

Square edge concentric, Quadrant edged, Conical entrance, Eccentric, Segmenta

Orifice Bore

In accordance with ISO-5167, BS-1042, ASME MFC 3M, R.W.Miller, L.K.Spink, AGA-3

Tag Plate

In the same material as plate & is welded to orifice plate. Tag plate integral to the Orifice plate (i.e. without welding) can also be offered as a special case.

Vent / Drain

Vent or Drain holes are provided as per customer's requirement. Not drilled for orifice bores smaller than 25.4 mm

Flange Union

Weld neck, Slip on, Threaded, Socket welded with RF or RTJ facing Orifice flanges are in accordance with ANSI B16.36 with minimum flange rating of 300# for sizes up to 8" or male - female flanges in accordance with ANSI B16.5.

Pressure Tappings

Corner tappings are recommended for sizes upto 1 ½"; Flange taps from 2" to 16"; D – D/2 taps for higher sizes.

Gasket

CAF as per IS: 2712 Gr 0/1, SS spiral wound + CAF, SS spiral wound + Grafoil, SS spiral wound + PTFE are normally supplied as per process requirement. Other materials available on request.

For RTJ flanges, the plate is fixed on the plate holder. The plate holder is in Soft Iron material & acts as a gasket.

Studs / Nuts

ASTM A193 Gr.B7/A-194 Gr.2H as standard, Other material on request.

Jack Screw

Carbon Steel ( C1038 heat treated )