Fluorine lined pneumatic regulating diaphragm valve

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Fluorine lined pneumatic regulating diaphragm valve

Product model:G641F46
Nominal diameter: DN15~DN300
Nominal pressure: 0.6MPa, 1.0MPa
Operating temperature: -30℃～+150℃
Main material: HT200, ZG230-450, ZG0Cr18Ni9

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產品詳細

[Essential information]
Working principle: using compressed air as power source, to accept the pressure signal of electric - gas valve positioner input or solenoid valve, the pressure in the membrane chamber on thrust compression spring assembly, and the push rod drives the valve rod displacement, change the flow area of the diaphragm and the valve seat, thrust reaction and signal pressure until the spring in the membrane phase equilibrium, so as to achieve the purpose of automatic adjustment of the process parameters.

[Technical parameter ]

Nominal diameter DN(mm)				15	20	25	32	40	50	65	80	100	125	150	200	250	300
Rated flow coefficient(KV)				8	15	16	28	60	68	9	160	300	500	600	1200	2100	3500
Equipped with actuator type				ZM-2			ZM-3			ZM-4			ZM-5			ZM-6
Trip(mm)				10			16		25		40				60	100
Nominal pressure(MPa)				0.6MPa、1.0MPa
Mode of action				Air shut type(B)、Air opening(K)
Signal range(Kpa)				200-100、40-200、20-60、60-100
Flow characteristics				Approximately fast opening
Maximum pressure is allowed when closed	Signal pressure	P2=0	120	0.9	0.9	0.40	0.4	0.3	0.2	0.2	0.1	0.05	0.015	0.01	0.06	0.03	0.01
		P2=0	140	1.0	1.0	0.80	0.8	0.6	0.4	0.4	0.2	0.1	0.03	0.02	0.12	0.06	0.02
		P1=P2	120	0.45	0.45	0.20	0.2	0.15	0.1	0.1	0.05	0.02	0.07	0.05	0.03	0.15	0.06
		P1=P2	140	0.9	0.9	0.40	0.4	0.3	0.2	0.2	0.1	0.05	0.14	0.10	0.06	0.03	0.01

[Valve features]

1, Corrosion resistance: almost all capability of the medium (including concentrated nitric acid and aqua regia) of corrosion.

2, Good sealing performance: because the valve cover is no stuffing box, to ensure that no leakage.

3, Leakage volume is small: because the valve core and valve seat use soft seal, so the leakage is low.

4, Equipped with multi spring pneumatic film actuating mechanism, the output force is huge and the structure is compact.

[Adaptive condition]
Fluorine pneumatic diaphragm valve is widely used in chemical, petroleum, metallurgical, pharmaceutical, power and other industries in the acid, alkali and other strong corrosive media and toxic and volatile gases, liquids and media process control.