Gdq-j-a series normally closed pneumatic high vacuum flapper valve

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Description: Gdq-j-a series normally closed pneumatic high vacuum flapper valve relies on compressed air as the valve plate opening and closing power through the electromagnetic reversing valve.
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WhatsApp : +86-13916614261

Gdq-j-a series normally closed pneumatic high vacuum flapper valve relies on compressed air as the valve plate opening and closing power through the electromagnetic reversing valve. When the power supply or compressed air is lost, the valve with a diameter of less than DN80 will automatically close the valve by the spring force. The valve with a diameter of more than DN100 will quickly close the original air source pressure of the cylinder through the solenoid valve group to automatically close the valve. So as to achieve the function of quickly cutting off the air flow in the vacuum system. The shaft seal structure of pneumatic high vacuum flapper valve can be divided into gdq-j-a rubber seal and gdq-j-a (b) bellows seal. Gdq-j type is angle type, gdq-s type is tee type with pre extraction port.
The applicable working medium is air and non corrosive gas.

Technical Parameters

applicability(Pa)  105~1.3×10-4 (Shaft seal material is rubber)
105~1.3×10-6 (Shaft seal material is bellows)
Valve leak rate(Pa.L/S)  ≤1.3×10-5 (the shaft seal material is rubber)
 ≤1.3×10-7 (Shaft seal material is bellows)
Applicable temperature(℃)  -25~+80 (The sealing material is nitrile rubber)
-30~+150 (the sealing material is fluorine rubber)
Material of main parts of valve Stainless steel or carbon steel
Air source pressure (Mpa)  0.4~0.8
Installation position DN<300 arbitrary, DN≥300 vertical
supply voltage Standard factory: AC220V/50Hz
 Special designation: ①AC110V; ②DC24V; ③DC12V, etc.
Signal feedback  Standard factory: without feedback signal
Special designation: Magnetic switch DC/AC5~240V

Dimensions

Dimensions

(Figure 1) (KF) connection and external dimensions

model Path (DN) ΦD ΦB H A Flange standard
GDQ-J10/KF 10 30 12.2 180 30 GB4982
GDQ-J16/KF 16 30 17.2 180 40
GDQ-J25/KF 25 40 26.2 200 50
GDQ-J40/KF 40 55 41.2 210 65
GDQ-J50/KF 50 75 52.2 276 70 /

(Figure 2) Looper flange connection and overall dimensions

model Path (DN) ΦD ΦB H A n-ΦC Flange standard DNy (pre-extraction port)
GDQ-J40A 40 100 80 230 70 4-Φ9 GB/T6070 /
GDQ-J50A 50 110 90 276 70
GDQ-J63A 63 130 110 283 88
GDQ-J80A 80 145 125 324 98 8-Φ9
GDQ-J100A 100 165 145 338 108
GDQ-J125A 125 200 175 424 128 8-Φ11
GDQ-J(S)150A 150 220 195 482 138 JB919 KF40(GB4982)
GDQ-J(S)160A 160 225 200 482 138 GB/T6070
GDQ-J(S)200A 200 285 260 620 200 12-Φ11 DN50(GB/T6070)
GDQ-J(S)250A 250 335 310 655 208 DN63(GB/T6070)
GDQ-J(S)300A 300 380 350 783 250 8-Φ14 JB919 DN80(GB/T6070)
GDQ-J(S)320A 320 425 395 1064 250 12-Φ14 GB/T6070
GDQ-J(S)400A 400 510 480 1210 330 16-Φ14 DN100(GB/T6070)
GDQ-J(S)400A 400 500 465 1210 330 8-Φ18 JB919
GDQ-J(S)500A 500 610 580 1270 360 16-Φ14 GB/T6070 DN125(GB/T6070)
GDQ-J(S)600A 600 710 670 1562 450 12-Φ21 JB919 DN160(GB/T6070)
GDQ-J(S)630A 630 750 720 1562 450 20-Φ14 GB/T6070
GDQ-J(S)800A 800 920 880 1865 550 20-Φ21 JB919 DN200GB/T6070)

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