SHANGHAI SANZHOU AUTOMATION DASH CO.,LTD

V230Y Pilot Drive Self-operated Differential Pressure control valve, is composed of control valve body, actuator, positioning spring ,stainless steel bellows, external pressure tap and all that. The valve doesn’t requires any auxiliary energy from external supply sources, by use of medium itself pressure as motive power, it can automatically control and stabilize the medium pressure.This valve has high regulating accuracy . It is mainly used for keep ing the pressure of protecting gas (such as Nitrogen ) on tank’s top to be constant ,in ordert to avoid the material in the tank contacting with air,avoid volatilizing and oxygenizing of material and keep the safe of the tank.It is especially suitable for the various gas seal protection system!

V230Y command operated self-operated micro-pressure control valve is characterized by power saving, effectively handle, convenient to operate and maintain etc. It is widely used in the oil and chemical etc industrials.

 

Type ：cast globe valve，(as shown in figure 1)

Nominal Diameter:DN20,25,32,40,50,65,80,100

Nominal Pressure: B PN1.0、1.6MPa

           ANSI150

End Connection：Flange HG20596-97M； ANSI B16.5 RF ；DIN2543/2544/2545RF；JIS B2201RF

Face to Face Dimension: according to GB/T12221-1989，EN558.1:1995，ISO5752-1982 basic series 1

Body Material: WCB,ZG0Cr18Ni9(CF8),ZG0Cr18Ni12Mo2Ti(CF8M)

Bonnet Type: STD type，-10～80℃ ；Medium temp type（with Every temperature tank )， ≤250℃；high temp type（with Every temperature tank and extensions），≤350℃Packing ：V shape PTFE ,flexible graphite, o-rings

Seal gasket：Seal gasket：Metal winding gasket, metal graphite gaskets, zigzag gasket and flat gasket

Paint: Carbon steel shell surface required to paint, stainless steel or copper surface without paint .

Plug type: cylinder plug

Flow characteristics: quickly opening

Plug material: 0Cr18Ni9(304),0Cr17Ni12Mo2(316)

Seat material: 0Cr18Ni9(304),0Cr17Ni12Mo2(316),304+F4,316+F4

Stem material: 0Cr17Ni4Cu4Nb(17-4PH),0Cr17Ni12Mo2(316)

Bellow material: 0Cr17Ni12Mo2(316),00Cr17Ni14Mo2(316L)

Pressure Regulating Range: please check table 1

Upper and Lower Case Material：A3、A4 With PTFE、0Cr18Ni9(304)

Diaphragm Rubber: NBR , EPDM , FPM and other oil-resistance rubbers

Spring material: 60Si2Mn

Work temperature:-20~80℃

Control Type: pressure relief type(B), pressure regulators type(K)

Rated CV：As shown in table 1

Seat leakage：Metal seat according to ANSI B16.104 ClassⅣ，less than10^-4of Rated Cv ,PTFE seat according to ANSI B16.104 Class VI,less than10^-7of Rated Cv

Pressure control accuracy ± 3%.

Working temperature:-10～350℃

Rated Travel: see table 1

Shape Size：As shown in figure 3 , table 2

Weight of product：As shown in table 2

 

 

 

 

 Figure1V230Y Pilot Drive Self-operated Differential Pressure control valve

阀体：body   阀芯:plug    执行器:actuator 节流阀:throttle valve 减压阀:pressure relief valve 指挥器阀芯:pilot plug   检测机构:testing organization

预设弹簧:preset spring 指挥器:monitor                                     

 

Working principle

V230Y command operated self-operated differencial pressure control valve as shown in figure 1.It guides the medium which is set on the tank top’s pressure tapping point to testing organization(7). The medium contacting on the testing component will produce an acting force which is balance to the preset pressure of spring. When the pressure in the tank fall to lower than Nitrogen supply equipment’s set pressure, the balance will be broken ,so the monitor’s plug opened, and the gas from front valve goes into actuator’s upper and lower case through pressure relief valve and throttle valve, at last it opens the plug and fill gas to the tank; when the tank’s inside pressure up to air supply equipment’s set pressure, preset spring make the monitor be closed. Due to the function of spring in the actuator, the plug closed and stopped to supply the air.

Table 1 technical parameters

DN(mm)	25									32	40	50	65	80	100
Seat diameter dn	5	6	7	8	10	12	15	20	25	32	40	50	65	80	100
Cv	0.23	0.37	0.58	0.94	2.1	3.3	5.1	8.1	12.9	35	37	56	88	140	220
Rate travel	8									10		14	20		25
Pressure regulating range KPa	0.5～5.5、5～10、9～14、13～19、18～24、23～28、 27～33、31～38、36～44、42～51、49～58、56～66

 

 

 

Figure3 V230Y pilot drive self-operated differential pressure control valve

Table 2 shape size (mm) and weight (Kg)