MULTISTAGE RESTRICTION ORIFICE

If it becomes necessary to break-down a pressure in excess of 300 psi, it is advisable to use a series of orifices Instead than a single orifice in order to reduce the wear on the individual orifices and to eliminate the excessive Noise incidental to the degradation of high pressure through a single orifice.
The TM multiple pressure reducing orifices are specially designed for these two purposes.
The main application is for service on boiler feed water by-pass lines.

TECHNICAL SPECIFICATIONS

Type of construction

Flanged Type
With of without taps to check the pressure drop.
Sizes from 2" (DN50) and above

Butt welding type
With or without taps to check the pressure drop.
Sizes from 2" (DN50) and above

Socket welding type
With or without taps to check the pressure loss.
From " (DN20) to 1.1/2" (DN40)

Standard Materials
Inner parts (Orifices) in AISI 316 st. st. as standard.
Sheel and Flanges in the same material as the process line.

Calculation and Design
To carry out calculation and design of the multiple pressure reducing orifices is necessary to specify: required permanent pressure loss, fluid and medium conditions, inlet pressure, flow rate, working temperature, Inside and outside pipe diameter, pipe material, specific gravity at base and working conditions, absolute viscosity, Centipoises at working conditions.