Diaphragm Low Temperature Pneumatic Control Valve

ZJH□-D Pneumatic diaphragm low temperature control valve

Application: suit to work under low temperature -250^oC

Nominal dimension (mm)		G1/2', G3/4'							20				25	32	40	50	65	80	100	125	150	200
Seat diameter (mm)		3	4	5	6	7	8	9	10	12	15	20	26	32	40	50	66	80	100	125	150	200
Flow coefficient (Kv)	Small flow	0.08	0.12	0.20	0.30	0.50	0.80	1.00	-	-	-	-	-	-	-	-	-	-	-	-	-	-
	Single seat	-	-	-	-	-	-	-	1.2	2.0	3.2	5.0	8	13	22	32	50	80	120	200	280	450
	double seat	-	-	-	-	-	-	-	-	-	-	-	10	16	25	40	72	100	160	250	400	630
Rated travel (mm)		10											16		25		40			60
Rangeability		30:1
Nominal pressure		1.6, 4.0, 6.4MPa
Valve core		single and double seat valve (direct connection casting globe valve), small flow valve (direct connection cast valve)
Flow characteristics		Equal percentage, linear, quick opening
Action type		Pneumatic to open, pneumatic to close
Work temperature		-250~-60^oC
Flange standard		JB78-59, JB79/59, JB/T79.1-94, JB79.2-94, ANSI, JIS, DIN
Actuator		ZMB pneumatic diaphragm actuator, ZHB mini pneumatic diaphragm actuaotr
Available part		Positioner, solenoid valve; air filter pressure reducing valve, limit switch, valve position feedback device，emergency actuating device, handwheel etc