GDQ series pneumatic high vacuum baffle valveDetailed product description：

The GDQ series pneumatic high vacuum baffle valve (also known as angle valve) is powered by compressed air and changes the direction of the air path through an electromagnetic directional valve. It pushes the cylinder piston up and down, drives the valve stem up and down, and opens or closes the valve plate, thereby achieving the purpose of connecting or cutting off air flow in the vacuum system. The GDQ-J type is a corner pass type, and the GDQ-S type is a three-way type with a pre extraction port.
The applicable working medium is air and non corrosive gases.

Main technical performance

Scope of application (Pa)	105～1.3x10-4
Valve leakage rate (Pa.L/S)	≤1.3x10-5
Medium temperature (℃)	-25~+80 (sealing material is nitrile rubber) -30~+150 (sealing material is fluororubber)
Gas source pressure (MPa)	0.4～0.8
Installation location	DN ＜ 300 arbitrary, DN ≥ 300 vertical
power supply voltage	Standard factory: AC220V/50Hz Special designation: AC110V; DC24V； DC12V, etc
Signal Feedback	Standard factory: without feedback signal Special specification: Magnetic switch DC/AC 5~240V

(Figure 1) (KF) Connection and external dimensions

Model	Diameter (DN)	ΦD	ΦB	H	A	Flange Standard
GDQ-J10/KF	ten	thirty	twelve point two	one hundred and eighty	thirty	GB4982
GDQ-J16/KF	sixteen	thirty	seventeen point two	one hundred and eighty	forty
GDQ-J25/KF	twenty-five	forty	twenty-six point two	two hundred	fifty
GDQ-J40/KF	forty	fifty-five	forty-one point two	two hundred and ten	sixty-five
GDQ-J50/KF	fifty	seventy-five	fifty-two point two	two hundred and seventy-six	seventy	/

(Figure 2) Loop flange connection and external dimensions

Model	Diameter (DN)	ΦD	ΦB	H	A	n-ΦC	DNy (pre suction port)	n-Mb	Flange Standard
GDQ-J50	fifty	one hundred and ten	ninety	two hundred and seventy-six	seventy	4-Φ9	/	/	GB/T6070
GDQ-J63	sixty-three	one hundred and thirty	one hundred and ten	two hundred and eighty-three	eighty-eight
GDQ-J80	eighty	one hundred and forty-five	one hundred and twenty-five	three hundred and fourteen	eighty-eight	8-Φ9
GDQ-J100	one hundred	one hundred and sixty-five	one hundred and forty-five	three hundred and thirty-eight	one hundred and eight
GDQ-J125	one hundred and twenty-five	two hundred	one hundred and seventy-five	four hundred and twenty-four	one hundred and twenty-eight	8-Φ11
GDQ-J(S)150	one hundred and fifty	two hundred and twenty	one hundred and ninety-five	four hundred and eighty-two	one hundred and thirty-eight		DN40(GB4982)		JB919
GDQ-J(S)160	one hundred and sixty	two hundred and twenty-five	two hundred	four hundred and eighty-two	one hundred and thirty-eight				GB/T6070
GDQ-J(S)200	two hundred	two hundred and eighty-five	two hundred and sixty	six hundred and twenty	two hundred	12-Φ11	DN50(GB/T6070)
GDQ-J(S)250	two hundred and fifty	three hundred and thirty-five	three hundred and ten	six hundred and fifty-five	two hundred and eight		DN63(GB/T6070)
GDQ-J(S)300	three hundred	three hundred and eighty	three hundred and fifty	seven hundred and eighty-three	two hundred and fifty	8-Φ14	DN80(GB/T6070)		JB919
GDQ-J(S)320	three hundred and twenty	four hundred and twenty-five	three hundred and ninety-five	seven hundred and eighty-nine	two hundred and fifty	12-Φ14			GB/T6070
GDQ-J(S)400	four hundred	five hundred and ten	four hundred and eighty	one thousand two hundred and ten	three hundred and thirty	16-Φ14	DN100(GB/T6070)	16-M12
GDQ-J(S)400	four hundred	five hundred	four hundred and sixty-five	one thousand two hundred and ten	three hundred and thirty			8-M16	JB919
GDQ-J(S)500	five hundred	six hundred and ten	five hundred and eighty	one thousand two hundred and seventy	three hundred and sixty		DN125(GB/T6070)	16-M10	GB/T6070
GDQ-J(S)600	six hundred	seven hundred and ten	six hundred and seventy	one thousand five hundred and sixty-two	four hundred and fifty	12-Φ21	DN160(GB/T6070)	12-M18	JB919
GDQ-J(S)630	six hundred and thirty	seven hundred and fifty	seven hundred and twenty	one thousand five hundred and sixty-two	four hundred and fifty	20-Φ14		20-M10	GB/T6070
GDQ-J(S)800	eight hundred	nine hundred and twenty	eight hundred and ninety	one thousand and nine hundred	five hundred and twenty	24-Φ14	DN200(GB/T6070)	24-M10

Note: For DN400 and above, a dead flange n-Mb is used at the bottom.