Orifice flanges 
are intended for use instead of standard pipe flanges when an orifice plate or flow nozzle must be installed. Pairs of pressure tappings are machined into the orifice flange,making separate orifice carriers or tappings in the pipe wall unnecessary.

EATHU’s orifice range of orifice flanges covers all standard sizes and ranges, and all common flange materials.

Flanges are available in socket weld or weld neck form, and are typically supplied with two 1/2″ NPT tappings in each flange. Jacking screws to ensure ease of removal of the primary flow element are provided.

Orifice plates and flow nozzles can also be supplied.

Orifice flanges may also be supplied complete with bolting and gasket kits.

The function of the orifice flange is to measure the rate of the flow of the commodity through the piping system. Orifice flanges are easy to recognize because they have a hole drilled through the face of the flange perpendicular to the pipe. They also have an additional set of bolts called jack screws. These screws are used to help separate the flanges so inspection and/or replacement of the orifice plate can be performed. The orifice flange is a single component of the orifice flange union assembly. The orifice flange union is composed of two orifice flanges, an orifice plate, bolts, nuts, jack screws, and two gaskets.

Orifice flange’s pressure ratings is 300LB, 600LB, 900LB, 1500LB, 2500LB, and the Orifice flange Surface treatment is antirust oil, black painting, yellow painting, transparent, electric galvanized or hot galvanized. For South American clients, the most popular surface treatment is Black painting.

The Packing for Orifice Flange is plywood pallet, the delivery time is 30days after receiving the formal order. If you have special delivery time please contact Eathu, then we can give you the soonest delivery time. Please note our MOQ for Orifice Flange is 1 pallet.

Orifice flange used for: Petroleum, chemical industry, water conversancy, electric power, Natural gas, Coal gas, Water power and other pipeline projects.

Orifice flange Materials

We can supply orifice flanges in a wide range of standard and special materials, including:

ASTMA105 Carbon Steel

ASTM A350 LF2 Low Temp Carbon Steel

ASTM A182 F316 Stainless Steel

ASTM A182 F304 Stainless Steel

ASTM A182 F11 1% Cr 1/2% Mo

ASTM A182 F22 2-1/4% Cr 1% Mo

Class : 15030060090015002500

(051) 328-2825