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RV ZJHN Mini-type Pneumatic Diaphragm Double-seat Control Valve

Feature

Body of a RV ZJHN Mini-type Pneumatic Diaphragm Double-seat Control Valve is equipped with two valve seats; fluids flow ut from the upper sealing surface and lower sealing surface of a valve plug; the RV ZJHN Mini-type Pneumatic Diaphragm Double-seat Control Valve has a small unbalanced force, is a balancing structure, allows larger using pressure difference, is suitable for occasions with large pressure difference, big flow and not strict requirement on leakage volume, and can be broadly applied to the industrial sectors like oil, chemical industry, pharmacy, metallurgy, power station, etc, to control mediums like gas, liquid, stem, etc.

Parameter

外形尺寸

公称通径DN(mm)	外形尺寸						重量
	L		H		H1	A	PN1.6	PN2.5
	PN1.6	PN2.5	常温型	散热型	H1	A	PN1.6	PN2.5
25	185	205	679	785	117	285	32	34
32	200	220	684	790	120		30	35
40	220	240	774	875	138		38	48
50	250	265	784	885	144		42	52
65	275	295	1011	1158	188	360	76	95
80	300	325	1042	1196	208		92	115
100	350	370	1065	1219	220		110	135
125	410	440	1318	1501	267	470	175	200
150	450	475	1340	1523	278		210	254
200	550	570	1423	1606	320		280	407
250	640	670	1956	2196	440	585	/	676
300	760	800	2196	2257	475	585	/	950

技术参数和性能指标

公称通径(mm)	阀座直径（mm)	额定流量系数(Kv)		额定行程(mm)	薄膜有效面积㎝²	固有流量特性	固有可调比	公称压力(MPa)	工作温度（℃）	环境温度（℃）	气源压力(Mpa)	弹簧范围（Kpa)	接管尺寸
		直线	等百分比
G3/4"	3	0.08		10	20	直线等百分比快开	50:1	0.6 1.6 4.0 6.4 (ANSI125150 300 600Lb） (JIS10 16 20 30 40K)	常温型 -20～+200 -40～+450 -60～450 低温型：-250～-60	-40～+85	0.14 (0.2 5 0.4)	20～100（40～200 80～240 20～60 60～100）	螺纹M10×1
	4	0.12
	5	0.20
	6	0.32
	7	0.50
	8	0.80
20	10	1.8	1.6	16	350 560
	12	2.8	2.5
	15	4.4	4
	20	6.9	6.3
25	25	11	10
32	32	17.6	16
40	32	17.6	16	25
	40	27.5	25
50	50	44	40
60	65	69	63	40
80	80	110	100
100	100	176	160
150	125	275	250	60	900
	120	440	400
200	200	690	630
250	250	1000	900	100	1400
300	300	1600	1440
350	350

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