ZZY

ZZY type steam pressure control valve is a kind of driving without external energy, rely on the media to be transferred the pressure as the power source and the medium pressure changes, according to a predetermined set value for energy-saving automatic control device. It sets the detection, control, perform many functions in a valve, self-contained instrument control system. The product is composed of low flow resistance (sleeve) single seat valve, bellows (sleeve) and a balanced composition of executive mechanism. Is a new generation of valve products comply with GB standard, its characteristics are: 1, without additional energy saving control system of power equipment, low cost, suitable for explosive environment; 2, simple structure, small maintenance workload; 3, set point adjustable and wide range, convenient for users in the continuous adjustment setting range; detection accuracy of 4, diaphragm actuator cylinder type mechanism is high sensitive action; the pressure balancing mechanism 5, the valve, the valve is sensitive and accurate control, allowing a large pressure difference. Because the product without external energy, has the advantages of simple structure, convenient use, less maintenance workload, especially suitable for city heating, heating and no external power supply, gas supply and control steam pressure applications. According to foreign reports, the city heating, heating system uses the product, energy saving efficiency than before to improve 30%-40%, the effect is significant.
Note: parameters are for reference only, or are not full. Valve can be used in accordance with the requirements of different pressure, material, diameter, drive, etc.. Specific please contact or online advisory contact. No Information

Nominal diameter（DN）	20	25	32	40	50	65	80	100	125	150	200	250	300
Rated flow coefficient（KV）	7	11	20	30	48	75	120	190	300	480	760	1100	1750
Rated travel（mm）	8		10		14	20		25	40		50	60	70

Nominal pressure（MPa）		1.6 4.0 6.4
Pressure regulating range（Mpa）		15~50 40~80 60~140 120~220 160~220 200~260240~300 280~350 330~400 380~450 480~560 540~620600~700 680~800 780~900 880~1000 950~~2500
Flow characteristics		快开
Adjustment precision%		±5
Use temperature（℃）		≤350
1、Allowable leakage	Hard seal（1/h）	10-4: single seat valve rated capacity (IV); two seater, sleeve, valve rated capacity is less than 5 * 10-4 (II)
	Soft seal（1/h）	0.15	0.30	0.45	0.60	0.90	1.7	4.0	6.75	11.10	16.0
2、Pressure relief ratio	Maximum	10
	Minimum	1.25

Nominal diameter（DN）				20		25	32	40	50	65	80	100	125		150		200		250		300
Flange pipe size（B）				383			512		603	862		1023	1380				1800		2000		2200
Flange end distance（L）				150		160	180	200	230	290	310	350	400		480		600		850
Pressure regulating range （ Kpa ）		15-140	H	475			520		540	710		780	840		880		915		940		1000
			A	280			308
		200-500	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
	600-1500		H		445		570		600	820		890	950			1000		1100		1200
			A		85		96
	1000-2500		H		445		570		600	820		980	950			1000		1100		1200
			A		85		96
weight（Kg）					26		37		42	72	90	114	130	144		180		200		250
Pipe joint thread					M1.6×1.5