pneumatic diaphragm cut-off valve

Model：ZMBQ
Category：Pneumatic Valve
origin：SHANGHAI

SHANGHAI AUTOMATION INSTRUMENTATION CO., LTD

ZMBQ pneumatic diaphragm cut-off valve

ZMBQ pneumatic diaphragm cut-off valve, use top-guide structure, equipped with multi-spring actuator. Impact structure, light weight, flexible action, S-type fluid channel, little loss of pressure drop, large capacity of valve, convenient assembly

Cut-off valve receive signal from automatic regulation instrument, cut-off, open or change flow direction of media, achieve automatic control and remote control of petroleum, chemical, metallurgy, power, light industry, textile

Nominal diameter DN（mm）		15	20	25	32	40	50	65	80	100		125	150	200
Rated flow coefficient（KV）	Single-seat、double-seat	5	7	11	20	30	48	75	120	190		300	480	760
	Sleeve			11	20	30	48	75	120	180		300	480	760
Nominal diameter （MPa）		1.0 1.6 4.0 6.4
Rated travel （mm）		8				12	20	25			40				50
Active area （C㎡）	ZMQ	100												200	400	600	1000
	ZSQ	100													125	160	250
Allowed leakage	Hard sealing 1/h	General ：10ˉ4×rated capacity； Strict：single、double-seat：1.2×10ˉ7, sleeve5×10ˉ6×rated capacity
	Soft sealing	VI level
Allowed pressure difference （MPa）	PZMQ positive action N	6.4	5.09	2.91	1.85	2.18	1.33	1.52		0.99		0.62	0.60	0.69	0.39
	PZMQ negative action N	6.4	6.4	3.88	2.47	0.91	1.77	2.03		1.32		0.83	0.80	0.92	0.52
	P ZSQ N	6.4	6.1	3.5	2.3	3.0	1.9	1.9		1.5		0.93	0.84	0.65	0.47
	M ZQM S	Nominal pressure
	ZMQ	0 or 250
	ZQM	0 or 400～600