China Excellent quality Pneumatic Spring Return Control Valve - Diaphragm valve pneumatic actuator PTFE PFA Lined – Hoyee factory and manufacturers

Excellent quality Pneumatic Spring Return Control Valve - Diaphragm valve pneumatic actuator PTFE PFA Lined – Hoyee

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Excellent quality Pneumatic Spring Return Control Valve - Diaphragm valve pneumatic actuator PTFE PFA Lined – Hoyee Detail:

Pneumatic PTFE PFA Lined diaphragm valve specification

Pneumatic PTFE PFA Lined diaphragm control valve Body type:	straight through casting globe type Fluoride (PTFE,FEP,PFA) lined
Spool type:	non-balanced single seat plug type
Nominal size:	DN20~200,、 NPS 3/4〞~ 8〞
Nominal pressure:	PN16 ~ 100、 CLASS 150LB ~ 600LB
Connection: flange:	FF、RF、MF、RTJ
Welding:	SW、BW
Flange dimension:	According to to IEC 60534
Pneumatic PTFE PFA Lined diaphragm control valve Bonnet type:	Ⅰ:standard type（-29℃~150℃）
Packing:	V type PFTE packing, flex. graphite packing, etc.
Gasket:	Metal graphite packing
Actuator:	Pneumatic: multi-spring diaphragm actuator, piston type actuator.

Material List

Component name	Control Valve Material
Body/Bonnet	WCB/CF8/CF8M/CF3M
Lined Material	PTFE,FEP,PFA
Control Valve spool/Seat	304/316/316L Lined PTFE/FEP/PFA
Packing	PTFE
Gasket	PTFE
Diaphragm Cover	Normal:Q235,Special:304
Diaphragm	NBR with reinforced polyester fabric
Spring	Normal:60Si2Mn,Special:50CrVa
Control valve stem	2Cr13/17-4PH/304/316/316L

Valve performance

Pneumatic PTFE PFA Lined diaphragm control valve Flow characteristic	Linear, percentage, quick open
Allowable range	30: 1
Rated Cv value	Percentage CV6.3~400 ，linear CV6.9~440
Pneumatic PTFE PFA Lined diaphragm control valve Allowable leakage	Soft seal: VI grade（foam grade） Leakage standard: GB/T 4213
Pneumatic PTFE PFA Lined diaphragm control valve Performance
Intrinsic error(%)		±1.5
Return difference(%)		≤1.5
Dead zone(%)		≤0.6
Difference from beginning to end point(%)		±2.5
Rated travel difference(%)		≤2.5

Valve actuator specification

Pneumatic fluorine lined control valve Type Method	Pneumatic diaphragm actuator
	PZMA-4~ PZMA-7
	Multi-spring type
Usage	Regulating type, ON-OFF type
Air supply pressure or Power supply voltage	Air supply pressure (Spring range) 140（20～100）Kpa G 240 (40～200) Kpa G 280 (80～240) Kpa G
Connector	Air pipe connector: RC1/4
Direct action	Pressure increase, stem descend, valve close.
Reaction	Pressure increase, stem ascend, valve open.
Input signal	40～20mA.DC（with positioner）
Lag	≤1%FS（with positioner）
Linear type	2%FS（with positioner）
Environmental temperature	-10℃～+70℃
Pneumatic PTFE PFA Lined diaphragm control valve Accessories	E/P, P/P valve positioner, filter regulator, valve converter, solenoid valve, limited switch Non-standard accessories, need special customized notes.

Valve technical parameter

Nominal size, DN		20	25	32	40	50	65		80	100	125	150
Rated flow coefficient, Cv	Percentage		8	12	20	32	50		70	100	200	240
Rated flow coefficient, Cv	Linear	5	10	16	25	38	63		80	120	220	300
Travel		16mm		25 mm				40mm			60mm
Pneumatic actuator Diaphragm effective area, Ae (cm2)		ZHA/B-22		ZHA/B-23			ZHA/B-34				ZHA/B-45
		350		350			560				900
Action	Spring range	Pneumatic PTFE PFA Lined diaphragm control valve Max. allowable pressure difference（MPa）
Air open	20-100KPa	1.16	0.7	0.44	0.28	0.18	0.17		0.11	0.07	0.07	0.05
	40-200 KPa	3.34	2.14	1.31	0.84	0.53	0.51		0.33	0.21	0.22	0.15
	80-240 KPa	6.4	4.99	3.05	1.95	1.25	1.18		0.78	0.5	0.51	0.36
Air close	20-100KPa	2.23	2.14	0.87	0.56	0.35	0.34		0.22	0.14	0.15	0.1
	40-200 KPa	6.4	6.4	5.86	3.64	2.3	2.21		1.43	0.91	0.95	0.66
	80-240 KPa	6.4	6.4	6.4	5.04	3.18	3.06		1.98	1.26	1.32	0.92

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