High performance pneumatic control valve

NegotiableUpdate on 04/02

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Overview

High performance pneumatic control valve

Product Details

High performance pneumatic control valve

■product overview

The pneumatic diaphragm single seat regulating valve consists of a pneumatic multi spring diaphragm actuator and a low flow resistance single seat valveThe new actuator has low height, light weight, and simple equipment. The new valve body has a compact structure, smooth flow channels, and a large flow coefficient. This product has stable operation, reliable action characteristics, small valve seat leakage, precise flow characteristics, and a wide adjustable range. It will undoubtedly achieve high-quality control effects in a wide range of applications with its unique advantages. There are multiple varieties of products including standard type, adjustable cutting type, corrugated pipe sealing type, jacket insulation type, etc. Suitable for liquid temperatures ranging from -200 ℃ to+560 ℃ in various grades.

■Material for main parts

Part name	material	temperature range
Valve cover on valve body	HT200	-20～200℃
	ZG230-450	-40～450℃
	ZG1Cr18Ni9Ti	-250～550℃
	ZG0Cr18Ni12Mo2Ti	-250～550℃
Valve core and seat	1Cr18Ni9	-250～550℃
Valve core and seat	0Cr18Ni12Mo2Ti	-250～550℃
Packing material	PTFE	-40～200℃
Diaphragm film	Ding Qing rubber clip reinforced polyester fabric
compression spring	60Si2Mn
Membrane cover	A3

■Main technical parameters

Nominal diameter mm			20				25	40		50	65	80	100	150		200	250	300	350	400
Valve seat diameter mm			10	12	15	20	25	32	40	50	65	80	100	125	150	200	250	300	Can collaborate with our company Negotiate production
Rated flow rate Coefficient Kv		straight line	1.8	2.8	4.4	6.9	11	17.6	27.5	44	69	110	176	275	440	690	1000	1600
		Equal percentage	1.6	2.5	4	6.3	10	16	25	40	63	100	160	250	400	630	900	1440
Nominal pressure MPa			0.6 1.6 4.0 6.4
Travel distance mm			10				16	25			40			60			100
Traffic characteristics			Straight line, equal percentage, quick opening type
Medium temperature ℃			-40-230 ℃ (normal temperature type), heat sink 230-450 ℃ (medium temperature type), special order -100-600 ℃
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
body material	PN (MPa)	0.6,1.6	WCB(ZG230-450) CF3CF8 CF8M
		4.0,6.4	WCB(ZG230-450)、ZG1Cr18Ni9Ti、ZG0Cr18Ni12Mo2Ti CF8 CF8M
Valve type			Straight through single seat cast ball valve
Valve core material			1Cr18Ni9、0Cr18Ni12Mo2Ti CF8 CF8M
Upper valve cover form			Ordinary type (constant temperature type), hot plate type (medium temperature type), low temperature type
Adjustable ratio R			50:1
Air source connector			M16×1.5

Note: Can be provided to usersThe structural length of ANSI and JIS flange products can also be determined according to user needs.
■Main technical parameters of the executing agency

model	A-22 B-22	A-23 B-23	B-34 B-34	A-45 B-45	A-56 B-56
Effective area cm2	350	350	560	900	1600
Travel distance mm	16	25	40	60	100
Spring range KPa	20-100 (standard): 40-200; 80～240; 20～60; 60~100

■performance index

project		Indicator value	project				Indicator value
Basic error%	Without locator	±5.0	beginning end drop inclined to one side differ from %	air to close	Without locator	Starting point	±5.0
	Equipped with locator	±1.0				End	±2.5
Return difference%	Without locator	≤3.0			Equipped with locator	Starting point	±1.0
						End	±1.0
	Equipped with locator	≤1.0		air to open	Without locator	Starting point	±2.5
						End	±5.0
Dead zone%	Without locator	≤3.0			Equipped with locator	Starting point	±1.0
						End	±1.0
	Equipped with locator	≤0.4	Allowable leakage rate L/h				1 × 10-4 × rated capacity of valve
Rated travel deviation%		±2.5

Note: This product is executedGB/T4213-92 National Standard.