Product Details

GAZJHN Pneumatic diaphragm double-seated flow regulator.
The valve has double seats.The fluid outflow through the valve core of the upper and lower sealing surface.The unbalanced pressure is small.It is a balanced structure,which are widely used in petroleum,chemical,pharmaceutical,metallurgical,power plants,such as the industrial sector,to control of gas liquid medium such as steam.

GAZJHN Pneumatic diaphragm double-seated flow regulator Structure
Valve Body.
Structure:flowing through type globe valve with double-seated.
DN:25~300mm.
PN:1.6~10.0Mpa or class 150~class 600.
Connections:flanged type.
Material:WCB,HT200 ZG230-450 ZG1Cr18Ni9Ti.ZG0Cr18Ni12Mo2Ti.

Upper Cover.
Normal Temp:-20°C~+200°C.
Heat Radiation Type:-40°C~+450°C.
Gland Connection:bolted type.
Packing:V type PTFE.FLEXIBLE GRAPHITE.S.S BELLOWS.

Valve Assembly.
Valve Core:Double guiding&double-seated plug type.
Cv Features:Linear,Equal Percentage or Quick opening.
Material:1Cr18Ni9Ti0Cr18Ni12Mo2Ti.

Actuator.
Model:Multi-spring diaphragm type actuator
Material of the diaphragm:NBR with reinforced polyester fabric.
Spring range:0.02~0.1/0.04~0.2Mpa.
Air Supply:0.14/0.16/0.28Mpa.
Air Supply Connector:M10*1.
Working Temp:-30~+70°C.
Valve Acting Type:air to close or air to open.
Accessories:positioner,,hand wheel.
Parameters:(with positioner.)
Leakage:<0.5%×Kv.
Intrinsic Erro:+/-1.5%.
Controlling Range:30:1.

GAZJHN Pneumatic diaphragm double-seated flow regulator Specifications
Kv,Movement&Allowable Differential Pressure.

DN(mm)	25			32	40	50	65	80	100	125		150		200
Size of seat(mm)	15	20	25	32	40	50	65	80	100	125		150		200
Flow coefficient Kv	4	6.3	10	16	25	40	63	100	160	250		400		630
Movement(mm)	16				25		40			60
Allowable differential pressure(Mpa)	5.8			4.9	3.8	2.9	4.0	3.3	2.6	3.6	3.0		2.3
Note:It refers to the differential pressure when the valves in open position.

GAZJHN Pneumatic diaphragm double-seated flow regulator Dimension.

DN	Actuator	H		øA	H1	L
DN	Actuator	Normal TEMP	Heat Radiator Type.	øA	H1	PN1.6	PN4.0	PN6.4
25	ZHA22	498	648	285	117	185	190	205
32	ZHA22	501	651	285	120	200	210	220
40	ZHA22	522	691	285	139	220	230	240
50	ZHA22	530	699	285	144	250	255	265
65	ZHA34	645	815	363	188	275	285	295
80	ZHA34	661	835	363	208	305	310	325
100	ZHA34	687	887	363	220	350	355	370
125	ZHA34	1234	1444	363	270	410	425	440
150	ZHA45	1242	1492	470	280	450	460	475
200	ZHA45	1394	1654	470	320	550	560	570