U100 Series :- Upstream Pressure Control Valve is Back Pressure Regulating Valve

The SAPCV, which monitors and controls the inlet pressure irrespective of variations in outlet pressure and flow rate are called as upstream pressure control valves. These are meant for controlling the inlet pressure at a precise set value or hold the line pressure or back pressure at its inlet and hence, often called as Pressure Holding Valve or Back Pressure Regulating Valves as well.

The U100 Series are Direct Acting Self Actuated Globe Type Medium Pressure Back Pressure Regulating Valves meant to regulate the inlet pressure at the pre-determined set value required for the processes / equipment protection.

As inlet / upstream pressure tend to rise, it pushes the diaphragm up, the stem & soft seat disc also moves up, an opens the port and relief the excessive pressure. As inlet / upstream pressure is compensated the spring force pushes the diaphragm down, the stem & soft seat disc also moves down and port opening closes affecting stoppage of flow.

FEATURES

his series of pressure regulating valves are self actuated or self contained and hence, do not require any external energy like pneumatic air or electricity to operate.
The precise inlet pressure control is achieved with this design affecting efficient response capability and accuracy.
The maintenance and inspection of the pressure regulating valve internals is possible without removing body from pipe line.
As a standard we provide trim material as AISI 316. Wide range of material is available to suit various services for different process fluids including corrosive fluids. NACE compliance can be provided for sour services.
Cap and adjusting screw discourage on-field tampering of the pressure setting.
Special load absorbing diaphragm assembly prevents diaphragm failure during heavy load.
Cap and adjusting screw discourage on-field tampering of the pressure setting.
Combination of metallic and soft seat enables the leakage class VI as per ANSI FCI 70.2.
The general replacement parts are polymer parts like Diaphragm, Soft Seat & O Rings only and thus the maintenance cost is very low.
The change in set pressure can easily be achieved by turning the set screw at site. Also, a wide range can be availed with the certain spring and in case, if needed, the spring can be changed at site for achieving desired set pressure with certain limitation.

MATERIAL OF CONSTRUCTION

CS A216 Gr WCB (standard), CF8, CF8M, Aluminium, CF3, CF3M, WC6, WC9, LCB, LCC, AlumBronze, Monel, Inconel or any other material on request.
St St316 (standard), St St304, 316L, Monel, Inconel, Hastelloy B/C or any other material on request
BunaN (Nitrile), Neoprene, Fluroelastomer (Viton), PTFE or any other material suitable for process / on request
Reinforced Polymers like Buna N (Nitrile), Neoprene, Fluroelastomer and PTFE
Carbon Steel IS4454 Gr.II / III, H12, EN47, SS302, SS316, Inconel X750 or any other material on request.

Fabricated Steel (Standard) and other on request.

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