Pneumatic 3 way mixing regulating valve - Pneumatic Control Valve Manufacturer and Supplier - Control valve-Pneumatic electric pressure flow temperature water control valve manufacturer

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SHANGHAI HUIXUAN VALVE

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Address: NO.720, Suide Road, Jiading District,Shanghai, China.

Pneumatic 3 way mixing regulating valve

Model：

Port size：DN20~300, NPS 3/4〞~ 12〞
Pressure：PN16 ~ 100,150LB ~ 600LB
Medium：Water,oil,steam,gas
Temperature :-196～450℃
Body material：WCB LCB CF8 CF3 CF8M CF3M
Description：

Pneumatic 3 way mixing regulating valve Feature
Pneumatic 3 way mixing regulating valve is mixting structure to mix two-way flowing fluid into one-way fluid ,penumatic 3 way control valve has diverting and mixing structure,Pneumatic 3 way mixing regulating valve adopts double valve cores up and down guide structure, equipped with multiple spring actuator.Pneumatic 3 way mixing regulating valve can replace two sets two-way valve and widely used in many occasions to regulate pressure, flow rate, temperature and liquid level.

Pneumatic 3 way mixing regulating/control valve body has the features as below:

1.compact structure, light weight, sensitive action, low pressure drop loss, new high allowable pressure, large valve capacity, accurate flow characteristics and convenient maintenance, etc.,
2.Pneumatic 3 way mixing regulating valve can be used for various working conditions, especially for the temperature control system of oil industry heat exchange and automatic control of other industries.
3.Spool structure with side guiding, well stability, no vibration, low noisy, Pneumatic 3 way mixing regulating valve can bear high pressure difference, easy for connection.
4.While with low nominal size and pressure difference, 3 way mixing regulating valve can be used in diverting occasion. However, while nominal size higher than DN100 and high pressure difference, Pneumatic 3 way mixting regulating valve and Pneumatic 3 way diverting regulating valve can’t be exchanged.

Pneumatic 3 way mixing regulating valve specification

Pneumatic 3 way control valve Body type:	3-way casting globe type
Spool type:	3-way double seat spool
Nominal size:	DN20~300 NPS 3/4〞~ 12〞
Nominal pressure:	PN16 ~ 100、 CLASS 150LB ~ 600LB
Connection: flange:	FF、RF、MF、RTJ
Welding:	SW、BW
Flange dimension:	According to to IEC 60534
Pneumatic 3 way control valve Bonnet type:	Ⅰ:standard type（-20℃~230℃） Ⅱ:Radiator type: （-45℃~ high than 230℃ occasion） Ⅲ:Low temperature extended type（-196℃~ -45℃） Ⅳ:Bellow seal type Ⅴ:Warm insulation Jacket type
Packing:	V type PFTE packing, flex. graphite packing, etc.
Gasket:	Metal graphite packing
Control valve Actuator:	Pneumatic:multi-spring diaphragm actuator, piston type actuator.

Pneumatic 3 way mixing regulating valve structure

Pneumatic 3 way mixing regulating valve material

Component name	Control Valve Material
Body/Bonnet	WCB/WCC/WC6/CF8/CF8M/CF3M
Valve spool/Seat	304/316/316L(overlaying stellite alloy)
Packing	Normal:-196～150℃ is PTFE,RTFE,>230℃ is flexible graphite
Bellow	304,316,316L
Gasket	Normal:Stainless steel with flexible graphite,Special:Metal tooth type gasket
Stem	2Cr13/17-4PH/304/316/316L
Diaphragm Cover	Normal:Q235,Special:304
Diaphragm	NBR with reinforced polyester fabric
Spring	Normal:60Si2Mn,Special:50CrVa

Pneumatic 3 way mixing regulating valve flow direction

Pneumatic 3 way mixing regulating valve performance

Pneumatic 3 way control valve Flow characteristic	Linear, percentage
Allowable range	30: 1
Rated Cv value	Percentage / linear CV8.5~1280
Pneumatic 3 way regulating valve/control valve Allowable leakage	Metal seal: IV grade（0.01% rated capacity） Leakage standard: GB/T 4213
Pneumatic 3 way 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

Pneumatic 3 way mixing regulating valve special requirment

Special test	Material penetration flaw detection (PT), radiator test (RT), flow characteristic test, low temperature test.
Special treatment	Trim nitrogen treatment, seat hard alloy treatment.
Special rinse	Degreasing and dehydration treatment
Special condition	Special piping or connection, vacuum condition, S.S fastener, special coating.
Special dimension	Customized face to face length or dimension
Test and inspection	Third party test report

Pneumatic 3 way mixing regulating valve actuator parameter

Pneumatic 3 way regulating valve/control valve Type\ Method	Pneumatic diaphragm actuator
	ZH23～ZH56
	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 3 way regulating valve/control valve Accessories	E/P, P/P valve positioner, filter regulator, valve converter, solenoid valve, limited switch Non-standard accessories, need special customized notes.

Pneumatic 3 way mixing regulating valve technical parameter

Seat diameter（mm）		25	32	40	50	65	80	100		125	150	200	250	300
Rated flow coefficient, CV		8.5	13	21	34	53	85	135		210	340	535	800	1280
Nominal size	Travel	Option flow coefficient Cv（★standard ●recommended）
DN25	16 mm	★
DN32	25 mm		★
DN40			●	★
DN50			●	●	★
DN65	40mm					★
DN80						●	★
DN100						●	●	★
DN125	60mm									★
DN150										●	★
DN200										●	●	★
DN250	100mm										●	●	★
DN300	100mm											●	●	★
Pneumatic actuator Diaphragm area, Ae (cm2)		ZHA/B-23				ZHA/B-34			ZHA/B-45				ZHA/B-56
Pneumatic actuator Diaphragm area, Ae (cm2)		350				560			900				1600
Action	Spring range	pneumatic 3 way control valve Metal sealing allowable pressure difference（MPa）
Air open	20-100KPa	0.7	0.44	0.28	0.18	0.17	0.11	0.07		0.07	0.05	0.03	0.05	0.03
	40-200 KPa	2.14	1.31	0.84	0.53	0.51	0.33	0.21		0.22	0.15	0.09	0.11	0.07
	80-240 KPa	4.99	3.05	1.95	1.25	1.18	0.78	0.5		0.51	0.36	0.21	0.21	0.15
Air close	20-100KPa	2.14	0.87	0.56	0.35	0.34	0.22	0.14		0.15	0.1	0.06	0.05	0.03
	40-200 KPa	6.4	5.86	3.64	2.3	2.21	1.43	0.91		0.95	0.66	0.37	0.11	0.07
	80-240 KPa	6.4	6.4	5.04	3.18	3.06	1.98	1.26		1.32	0.92	0.52	0.21	0.15

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