Pneumatic/Electric double eccentric butterfly valve

ZSRWH - Pneumatic double eccentric butterfly valve

ZDRWH - Electric double eccentric butterfly valve

Feature: double eccentric structure, small size and light, abrasion resistant, low return difference, stable motion

Application: large caliber, large flow, strict leakage requirement.

Material:

Valve plate and valve body: casting steel, stainless steel

Packing material: PTFE, flexbile graphite

Nominal dimension (mm)				80	100	125	150	200	250	300	350	400	450	500	600	700	800	900	1000	1200	1400	1500
Flow coefficient (Kv)	L Grade		60o opening	125	230	365	630	1100	1760	2450	3250	4270	5350	7000	10100	13650	17800	22400	28700	42600	55800	63500
	L Grade		60o opening	260	470	760	1300	2250	3600	5000	6700	8700	11000	14400	21000	28100	36500	45900	58800	87300	114200	130200
	M Grade		60o opening	110	210	325	550	1000	1630	2220	2960	3870	4900	6300	9240	12400	16200	20300	26000	37800	50800	57800
	M Grade		60o opening	185	330	530	910	1690	2700	3750	5360	7000	8800	11500	16800	25400	33200	41600	53300	77500	104100	118500
Rated travel				Regulate type:60 o, two position: 90 o
Flow character				Equal percentage
Nominal pressure				1.6, 4.0MPa
Rangeability				60 o 25:1 90 o 50:1
Product model		Pneumatic		ZSRWH with GTX, AL pneumatic actuator
Product model		Electric		ZDRWh with UNIC, PSQ, HQ, DHL electric actuator
Action type				Pneumatic: pneumatic to open or close; Electric: electric to open or close
Flange standard				JB78-59, JB79-59, JB/T79.1-94, JB/T79.2-94, ANSI, JIS, DIN