China Self-Operated Pressure Difference Regulation Control Valve

Self-operated Pressure Difference Control Valve (ZZCP)

Summary:
Self-operated differential pressure control valve is mainly composed of control valve, actuator and a set pressure spring. It is divided into two forms: differential pressure rising valve closing and differential pressure rising valve opening. It does not need external energy, the use of process pipeline medium pressure change. Compared with the signal, it can adjusts the medium force and actuator output force balance, in order to achieve stable pressure, differential pressure value. Self - contained differential pressure control is suitable for non - corrosive liquids, gases and steam and other media. It can be used for all kinds of oil, chemicals, liquid tank gas seal.

Self-operated Pressure Difference Control ValveModelZZCPSizeDN15~250mmStructure FormStraight-through CastingTypeBody MaterialCast steel(WCB);
Stainless Steel(304;316;316L)Norminal PressurePN1.0; PN1.6MPaWorking Temperature≤150ºCApplication RangeNon - corrosive gases, liquids and steam media.FeatureIt has high sensitivity, and pressure balance function.

Body SpecificationNominal DiameterDN15~250mmFlange StandardANSI,JIS,GB,JB,DINBody MaterialCast steel(ZG230-450);Cast stainless steelPlug MaterialStainless Steel(metal-to-metal)
Stainless steel inlaid with rubber ring(Soft Seal)Pressure BalanceStainless Steel Bellows(DN15-125)
Balance Diaphragm(DN150-250)

Rated flow coefficient & Noise measurement coefficient& Allowable Pressure DifferentialNominal
Diameter
(mm)
15
20
25
32
40
50
65
80
100
125
150Rated KvS 46.381620325080125160280The Noise
Flow coefficient
Z Value
0.6
0.6
0.6
0.55
0.55
0.5
0.5
0.45
0.4
0.35
0.3Allowable
Pressure
DifferentialPN101.0
1.51.2PN161.61.2

Structure Form of Control Valve1234567891011BodySeatShaftBonnetMembranous CapDiaphragmSpringAdjusting
Screw Nutconnecting pipeBalanced
DiaphragmFilling Valve

Features:
Self-operated differential pressure control valve need not external energy. It adopts pipeline pressure to regulate. It has energy saving, and simple system cost is low, and it can be used for no electricity, no gas occasions. There is no hidden danger of external energy. And it is simple to operate, setting only need to rotate the adjusting nut. It has the advantage of pressure balance and high sensitivity. It can be a number of combination control by the combination of components.
Working Principle:
Self - operated (differential pressure rise valve) control valve, automatic control valve, actuator and a set pressure spring. It is suitable for non-corrosive liquids, gases and vapors and for differential pressure control in system piping. When the differential pressure increases, the control valve closes.
Company Introduction:
Zhitai Valve Co., Ltd is a member of Valve Association of Longwan District, is located in Longwan Central Industrial Zone, Wenzhou City. It'a professional technology company integrated with development, manufacturing, sales, and after-sales services of valve actuators and and self-controlled valves. Presently, our main products include: pneumatic actuators, pneumatic valves and pneumatic control valves; electric actuators, electeic valves and eletric control valves; automatic control products. Our products are widely applied in natural gas, electricity, petroleum, chemical, metallurgical, construction, pharmacy, paper, printing and dying. Zhitai series actuators and valves are the best choice for automatic fluid control engineering and equipment manufacturing. We sincerely welcome customers from home and abrode to visit us for supervision, communication and cooperation. It's a great honor for us to cooperate with you.