Self-operated Pressure and Differential Pressure Combination Valve

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Self-operated Pressure and Differential Pressure Combination Valve

Size: DN15~ DN150

Pressure: -

End connection RF,RTJ

Material: WCB, WC6, LCB, CF8, CF8M, CF3M, LCB,904L, 316Ti, A105, F304,F316, Duplex stainless steel, Monel, Hastelloy, (Special Materials on Request)

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Description

Features

Working principle

Based on various combinations, refer to the working principles of self-operated (pre-valve/post-valve) pressure regulating valves and self-operated differential pressure regulating valves (pressure increase closes/opens the valve), operating according to the priority action principle.

Main features

1.With pressure balancing function and high sensitivity
2.Low noise, reliable performance, and maintenance free
3.Adopting standard modular design
4.Multiple combination controls can be achieved through assembly components

30D01D03Y /30D01D03R Self-operated pressure and differential pressure combination valve consist of control valve, two actuators, and two spring for setting pressure. Suitable for non-corrosive liquids, gases, and steam, this self-operated pressure and differential pressure combination valve controls either pressure or differential pressure in system pipelines. It operates based on the principle of priority action and cannot simultaneously control both parameters.

Actuator

Effective areas cm²	32*	80	250	630
Pressure setting ranges(MPa)	0.8-1.6	0.1-0.6	0.015-0.15	–
The minimum pressure difference required for normal operation of the pressure valve△Pmin(MPa)	0.3-1.2 ≥0.05	0.05-0.3 ≥0.04	0.01-0.07 ≥0.01	≥0.005
The maximum pressure difference allowed between the upper and lower chambers(MPa)	2.0	1.25	0.4	–
Materials	Diaphragm Cover: steel plate zinc coating. Diaphragm : EPDM or FKM with fiber reinforcement
Control pipelines、joint	Copper pipe or steel pipe Φ10X1(mm), Clamp connector: R1/4”

Note: The pressure setting range corresponding to the effective area is not applicable to DN150

Performance

Set value deviation		±8%
Allowable leakage( under specified test conditions)	Hard sealing	4×0.01% for the rated capacity of the valve.
	Soft sealing	DN15-50 10bubble/min	DN65-125 20bubble/min