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Description Material Performance Product Size Specifications

ZXT ZSQT pneumatic thin film, piston diaphragm regulating valve (referred to as pneumatic diaphragm valve) adopts the "mountain" shaped protruding surface between the diaphragm and the valve body for sealing, isolated from the outside world (without stuffing box), the flow path of the valve body is simple, smooth, and can be covered with anti-corrosion layer, suitable for corrosion resistance and highly toxic occasions.
The nominal pressure classes of this series of products are 0.6 and 1.0MPa, the diameter of the valve body ranges from 20 to 200mm, the applicable temperature ranges within 150℃, the leakage volume is zero.

Note: parameters are for reference only, or incomplete. Valves can be selected according to the requirements of different pressure, material, diameter, driving mode. Please contact us by phone or online.

Body lining	Use temperature（℃）	Applicable medium
unlined	-10~+175	Suitable for non corrosive media
Soft rubber	-10~+85	Has good abrasion resistance, suitable for cement, clay, coal dust, dry chemical fertilizer etc.
Hard rubber	-10~+85	Suitable for machinery, salt, hydrochloric acid, metal plating solution, soft water, chloride, chlorine etc.
Chloride butyl rubber	-10~+105	Suitable for animal oil, vegetable oil and lubricating oil, the pH value of the change in a large range of corrosive mud. Good wear resistance
Dingquanjiao	-10~+120	Corrosion resistance and wear resistance is good, the best corrosion resistance to most of the inorganic acid and acidic mortar
enamel	-10~+175	Suitable for temperature and inorganic acids, acids, alcohols, esters and other compounds
F 46	-10~+190	Suitable for strong corrosive medium such as sulfuric acid, hydrochloric acid and sodium hydroxide.

Diaphragm material	Use temperature（℃）	Applicable medium
Butyl rubber (grade B)	-40~+100	Most of the inorganic acid such as sulfuric acid, hydrofluoric acid, phosphoric acid and other applicable, good corrosion resistance, but also a variety of alkali and salts
Natural rubber (grade Q)	-50~+100	Mainly used for the purification of water, inorganic salt and the mineral acid medium
Teflon	-10~+150	Chemical stability, excellent corrosion resistance to strong acid, strong alkali, strong oxidizing agent

Nominal diameter DN（mm）		20	25	32	40	50	65	80	100	125	150	200
Rated flow coefficientKv	unlined	9.8	19	32	48	63	108	158	270	360	518	1114
	Lined with	7.8	17	28	41	55	87	127	240	311	415	1121
Rated travelL（mm）		8	10	12	16	24	30	34	36	44	55	65
Ae(cm 2 )		280		400			600			1000
Piston diameter(mm)		100		125			160			250
Nominal pressurePN(MPa)		0.6 1.0
Inherent flow characteristic		Approximate equal percentage
working temperature（℃）		≤150
Signal rangePr(KPa)		20~100、40~200、400~600
Allowable leakage		In the range of allowable differential pressure, leakage is zero.

No Information

Flange standard: cast iron flange press GB4216-84
Cast steel flange by GB9113-88
Flange sealing surface convex
Actuator gas signal connector: inner thread M16 * 1.5
Structure length: GB12221-89
Body flange face distance and flange standards can also be manufactured according to user specified standards such as: ANSI, JIS, DIN standards

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