GD高真空挡板阀

GD型高真空挡板阀用于接通或切断真空管路中的气流。适用介质为纯净空气和非腐蚀性气体。高真空挡板阀按轴封结构可分GD-J型橡胶轴封和GD-J(b)型波纹管轴封两种。按通导形式可分GD-J为角通型式，GD-S为带预抽口的三通型式。

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三精阀门 GD高真空挡板阀可定制

GD型高真空挡板阀概述

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型高真空挡板阀主要技术性能

Main Technical Performance

适用范围：Applicability	105～1.3×10-4Pa(轴封为橡胶) 105～1.3×10-5Pa(轴封为波纹管)
阀门漏率：Valve Leak Rate	≤1.3×10-4Pa.L/S.(轴封为橡胶) ≤1.3×10-5Pa.L/S.(轴封为波纹管)
适用温度：Applicable Temperature	-25～+80℃(丁腈橡胶) -30～+150℃(氟橡胶)

主要零件材料

Materials of Main Parts

阀体、阀盖、阀杆：铝合金、碳钢或不锈钢
密封件：丁腈橡胶、氟橡胶、波纹管(轴封)。

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

外形及连接尺寸(mm)

Overall and Connection Dimensions(mm)

Model 型号	DN	D1	D	A	H	P	法兰标准
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

活套法兰连接

Model 型号	DN	D1	Do	D2	A	P	H	n-φc	Dny预抽口	法兰标准
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