Product Overview

Pneumatic thin film micro regulating valve is a small caliber regulating valve specially developed for small flow regulation. The valve body adopts threaded connection, which has the advantages of small volume, light weight, easy installation and maintenance. When adjusting unclean media, attention should be paid to preventing blockages due to the small throttling gap. It is suitable for regulating the injection flow rate of liquid, steam and other media.

Nominal diameter (mm)	G1/2"			G3/4"
Valve seat diameter (mm)	1.5*	3	4	5	6	7	8	9
Flow coefficient Kv	0.0025	0.08	0.12	0.20	0.32	0.50	0.80	1.00
Adjustable range	30:1
Nominal pressure	Standard product 1.6 4.0 6.4, 10MPa
Valve core form	Single seat plunger type valve core
Traffic characteristics	straight line
Form of action	Air open type, air closed type
working temperature	Ordinary type -40~230 ℃, heat sink type 230~450 ℃, special order 450~600 ℃
Flange standard	Compliant with JB78-59 and JB79-59 standards, can be ordered and produced according to JB/79.1-94, JB/79.2-94, ANSI, JIS, DIN and other standards
Executing Agency	ZHA/BMulti spring pneumatic thin film actuator
Can be equipped with accessories	Positioner, solenoid valve, air filter pressure reducing valve, limit switch, valve position feedback device, emergency operating device, handwheel mechanism, etc

Main technical performance indicators

Leakage rate:Grade VI, below rated flow rate10^-4
Return difference:Without locator, less than full travel3%; with locator, less than 1% of the full stroke
Basic error:Without locator, less than full travel±5%； Equipped with a locator, less than ± 1% of the full stroke
Dead zone:Without locator, less than full travel3%; with locator, less than 1% of the full stroke. Note: The test uses PTFE packing.

Main component materials

Valve body material:1G1Cr18Ni9Ti316, 316L, etc
Core material:1Cr18Ni9Ti316, 316L, etc
Packing material:Polytetrafluoroethylene, flexible graphite
Membrane material:Nitrile rubber with nylon cloth

Allow pressure difference

Executing Agency	ZHA(B)-11
Travel distance (mm)	10
Effective area (cm)3)	200
Air source interface size	M16×1.5
Nominal diameter (mm)	G1/2"			G3/4"
Valve seat diameter (mm)	1.5	3	4	5	6	7	8	9
Allowable pressure difference △ P (MPa)	6.4						5.2	4.6

External dimensions and weight

Public diameter (mm)	G1/2"	G3/4"
Connection length L (mm)	92	92
Height H (mm)	370	370
H1(mm)	30	30
Actuator width D (mm)	230	230
Weight (KG)	18	18