GD高真空擋板閥

GD型高真空擋板閥用于接通或切斷真空管路中的氣流。適用介質為純凈空氣和非腐蝕性氣體。高真空擋板閥按軸封結構可分GD-J型橡膠軸封和GD-J(b)型波紋管軸封兩種。按通導形式可分GD-J為角通型式，GD-S為帶預抽口的三通型式。

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三精閥門 GD高真空擋板閥可定制

GD型高真空擋板閥概述

High Vacuum Flapper Valve

GD high vacuum flapper valve is used to put through or cut off the airflow in vacuum pipeline. Applicable medium can be pure air and noncorrosive gases. According to its shaft seal structure, high vacuum flapper valve is classified into GD-J rubber shaft seal type and GD-J(b)bellows shaft seal type. According to its put-through type, it is classified into GD-J angle type and GD-S three-way type with prepumping.

GD型高真空擋板閥主要技術性能

Main Technical Performance

適用范圍：Applicability	105～1.3×10-4Pa(軸封為橡膠) 105～1.3×10-5Pa(軸封為波紋管)
閥門漏率：Valve Leak Rate	≤1.3×10-4Pa.L/S.(軸封為橡膠) ≤1.3×10-5Pa.L/S.(軸封為波紋管)
適用溫度：Applicable Temperature	-25～+80℃(丁腈橡膠) -30～+150℃(氟橡膠)

主要零件材料

Materials of Main Parts

閥體、閥蓋、閥桿：鋁合金、碳鋼或不銹鋼
密封件：丁腈橡膠、氟橡膠、波紋管(軸封)。

Body, bonnet and stem: aluminium alloy, carbon steel or stainless steel
Sealing element: NBR, Viton, bellows(shaft seal)

外形及連接尺寸(mm)

Overall and Connection Dimensions(mm)

Model 型號	DN	D1	D	A	H	P	法蘭標準
GD-J10(b)	10	12.2	30	40	124.5	60	GB4982
GD-J16(b)	16	17.2	30	40	124.5	60
GD-J25(b)	25	26.2	40	50	134.5	78
GD-J32(b)	32	34.2	55	58	153	78
GD-J40(b)	40	41.2	55	65	160.5	78
GD-J50(b)	50	52.2	75	70	203	78

活套法蘭連接

Model 型號	DN	D1	Do	D2	A	P	H	n-φc	Dny預抽口	法蘭標準
GD-J50	50	110	90	55	70	78	203	4-φ9		GB6070
GD-J63	63	130	110	68	88	160	380	4-φ9
GD-J80	80	145	125	85	98	160	400	8-φ9
GD-J100	100	165	145	105	108	160	420	8-φ9
GD-J(S)160	160	225	200	165	158	160	575	8-φ11	DN40 GB4982
GD-J(S)200	200	285	260	208	200	160	655	12-φ11	DN50 GB6070
GD-J(S)250	250	335	310	258	208	250	690	12-φ11	DN63 GB6070
GD-J(S)320	320	425	395	328	250	250	785	12-φ14	DN80 GB6070
GD-J(S)150	150	220	195	156	158	160	575	8-φ12	DN40 GB4982	JB919
GD-J(S)300	300	380	350	308	250	250	785	8-φ14	DN80 GB6070	JB919