ZZVP self-operated micro-differential pressure control valve. Nitrogen vent valve

ZZVP-16K Self-operated micro-pressure regulating valve (nitrogen relief valve) Nitrogen seal valve Nitrogen seal device pressure reducing valve

ZZY self-operated pressure regulating valve does not need additional energy, using the energy of the medium to be adjusted as the power source, introducing the actuator to control the position of the valve core, changing the pressure difference and flow at both ends, so that the pressure before the valve (or after the valve) is stable. It has the advantages of sensitive action, good sealing, small fluctuation of pressure set, etc., and is widely used in the automatic control of gas, liquid and steam medium decompression and pressure relief and pressure regulation.
This series of products has a single seat (ZZYP), sleeve (ZZYM), double seat (ZZYN) three kinds of structure; The actuator has two kinds: film type and piston type; The mode of action has the pressure adjustment after the decompression valve (type B) and the pressure adjustment before the valve (type K). The nominal pressure grade of the product is PN16, 40, 64; Valve body diameter range DN20~300; Leakage grade II, IV and VI grade three; The flow characteristic is fast opening; The pressure is adjusted from 15 to 2500kPa. Can be combined according to the need to meet the requirements of user working conditions.
Self-operated pressure regulating valve features
? Self-operated pressure regulating valve does not need additional energy, and can work in the place without electricity and gas, which is convenient and saves energy.
? The pressure segment range is fine and cross each other, and the adjustment accuracy is high.
? The pressure setpoint can be set continuously during operation.
? For the adjustment of pressure after the valve, the ratio of pressure before the valve and pressure after the valve is 10:1~10:8.
? Rubber diaphragm type detection, actuator detection precision is high, sensitive action.
? The pressure balancing mechanism is used to make the regulating valve responsive and controlled.
Self-operated pressure regulating valve main parts materials
Valve body :ZG230-450 ZG1Cr18Ni9Ti ZGOCr18Ni12M02Ti
Spool :1Cr18Ni9Ti 0Cr18Ni12M02Ti
Valve seat :1Cr18Ni9Ti 0Cr18Ni12M02Ti
Stem :1Cr18Ni9Ti 0Cr18Ni12M02Ti
Film cover :A3 A3 steel coated tetrafluoroethylene stainless steel
Packing: polytetrafluoroethylene flexible graphite
Rubber diaphragm: Butadiene, ethylene propylene, fluorine, oil resistant rubber
Main technical parameters of self-operated pressure regulating valve

Nominal diameter DN(mm)		20	25		32		40		50		65	80		100		125		150		200	250		300
Rated flow factor Kv		7	11		20		30		48		75	120		190		300		480		760	1100		1750
Rated stroke (mm)		8			10				14		20			25		40				50	60		70
Nominal pressure PN(MPa)		1.6, 4.0, 6.4
Pressure adjustment range (kPa)		15 ~ 50 40 ~ 80 60 ~ 100 80 ~ 140 120 ~ 180 160 ~ 220 200 ~ 260 240 ~ 300 280 ~ 350 330 ~ 400 380 ~ 450 430 ~ 500 480 ~ 560 540 ~ 620 600 ~ 700 680 ~ 800 780 ~ 900 880 ~ 1000 950 ~ 1500 1000 ~ 2500
Flow Characteristics		Quick-opening
Adjust accuracy (%)		± 5
Use temperature (C)		≤ 350
Allowable leak	Hard seal (l/h)	Single seat :≤ 10-4 valve rated capacity (IV class); Double seat, sleeve ≤ 5X10-3 valve rated capacity (Class II)
	Soft seal (ml/h)	0.15		0.30		0.45		0.60		0.90			1.7		4.0		6.75		11.10			16.0
Pressure reduction ratio	big	10
	small	1.25

Main dimensions of self-operated pressure regulating valve

Nominal diameter 0N			20	25	32	40	50	65	80	100	125	150	200	250	300
Flange nozzle size B			383		512		603	862		1023	1380		1800	2000	2200
Flange face distance L			150	160	180	200	230	290	310	350	400	480	600	730	850
Pressure adjustment range kPa	15 to 140	H	475		520		540	710		780	840	880	915	940	1000
		A	280		308
	280-500	H	455		500		520	690		760	800	870	880	900	950
		A	230
	120-300	H	450		490		510	680		750	790	860	870	890	940
		A	176					194			280
	480-1000	H	445		480			670		740	780	850	860	880	930
		A	176					194			280
	600 to 1500	H	445		570		600	820		890	950		1000	1100	1200
		A	85		96
	1000-2500	H	445		570		600	820		890	950		1000	1100	1200
		A	85		96
Weight kg			26		37		42	72	90	114	130	144	180	200	250
Pressure guide joint thread			M16X1. 5

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