4安全阀是直接依靠介质压力产生的作用力来克服作用在阀瓣上的机械载荷使安全阀开启的，作用在阀瓣上的机械载荷主要来自重锤或弹簧，这种几乎是固定的机械载荷。要想保证安全阀的密封性能，必须阀座密封面和阀瓣密封面的平整度和表面粗糙度有严格的要求。 以弹簧式安全阀为例： 工作原理应该是压力=压强X面积。压力就是弹簧的压力，面积就是密封面的面积。当作用在密封面上的压强乘以密封面的面积形成的向上的推力大于弹簧的压力，弹簧被压缩，密封面打开，将压力通过泄压孔排出。
PVQ20B2ERSA9SS5S40C2120 PVM020ER05CS02AAAA00A
PVH45B2ERSNSE1S40C2820 PVM045ER05CE01AAAA
PVH45B2ERSNSE1S40C28V11P20 PVM045ER05CE01AACA
PVH45B2ERSNSS1S40C2820 PVM045ER05CS01AAAA
PVH45B2ERSNSS1S40C28V11P20 PVM045ER05CS01AACA
PVH45B2ERSNFS1S40CM720 PVM045ER05CS02AAAA
PVH45B2ERSNFS1S40C2820 PVM045ER05CS02AAAAE-ME-AC-01F/4RE-ME-AC-01F/4RE-ME-AC-01F/I 20
E-ME-AC-01FE-ME-AC-01FE-ME-AC-01F
E-ME-AC-01F/RR 20 /4 E-ME-AC-01F/RR 20 /A2 E-ME-AC-01F/RR-4 20
E-ME-AC-01F/RRE-ME-AC-01F/RRE-ME-AC-01F
E-ME-AC-05F 20 E-ME-AC-05F 20 /2 E-ME-AC-05F 20 /3 E-ME-AC-05F 20 /4
E-ME-AC-05F 20 /A3 E-ME-AC-05F/4RE-ME-AC-05F/4R
E-ME-AC-05F/I 20 E-ME-AC-05FE-ME-AC-05F
E-ME-AC-05F/RR 20 E-ME-AC-05F/RRE-ME-AC-05F/RR 20 /4
E-ME-AC-05F/RRE-ME-AC-05F/RRE-ME-AC-05F
E-ME-AC-05FE-ME-K-PID E-ME-L-01H 40 /DL17SA E-ME-L-01H 40 /DL26SB
E-ME-L-01H 40 /DL27SB E-ME-L-01H 40 /DL27SB E-ME-L-01H 40 /DL27SB
E-ME-L-01H 40 /DL35SB E-ME-L-01H 40 /DL67SA E-ME-L-01H 40 /LQ22SA
E-ME-L-01H 40 /LQ32SA E-ME-L-01H 40/DL27SB E-ME-L-01H 40/PCNNSA
E-ME-L-01H/DL27SB E-ME-L-01H/I 40 /LQ32SA E-ME-T-01H 40 /DH04SA
E-ME-T-01H 40 /DH05SA E-ME-T-01H 40 /DK14SC E-ME-T-01H 40 /DK15SB
E-ME-T-01H 40 /QV0NSA E-ME-T-01H 40 /TK14AA E-ME-T-01H 40 /TK14SC
E-ME-T-01H 40 /TQ25SA E-ME-T-01H 40 /TQ32SA E-ME-T-01H 40 /TQ42SA
E-ME-T-01H 40/DK14SC E-ME-T-01H 40/DK15SB E-ME-T-01H 40/QV1NSB
E-ME-T-01H 40/TQ25SA E-ME-T-01H/I 40 /DH04SA E-ME-T-01H/I 40 /DK14SC
E-ME-T-01H/I 40 /DP25SB E-ME-T-01H/I 40 /DP25SC E-ME-T-01H/I 40 /QV0NSA
E-ME-T-01H/I 40 /TQ25SA E-ME-T-01H/I 40/DK15SB E-ME-T-01H/I 40/QVONSA
E-ME-T-01H/I 40/TQ25SA E-ME-T-05H 40 /DH07SA E-ME-T-05H 40 /DK17SA
E-ME-T-05H 40 /DK17SB E-ME-T-05H 40 /DP27SB E-ME-T-05H 40/DH07S
E-ME-T-05H 40/DK17SB E-ME-T-05H 40/DP27SB E-ME-T-05H/I 40 /DK17SB
E-ME-T-05H/I 40 /DP27SB E-ME-T-05H/I 40/DH07SA E-ME-T-05H/I 40/DK17SB
E-ME-T-05H/I 40/DP27SB E-MI-AC-01FE-MI-AC-01F 11 /2
E-MI-AC-01FE-MI-AC-01F 11 /4 E-MI-AC-01F 11 /6 E-MI-AC-01F
E-MI-AC-01FE-MI-AC-01F/RRE-MI-AC-01F/RR 11 /2
E-MI-AC-01F/RR 11 /3 E-RACK3HE21TE E-RACK3HE28TE E-RACK3HE42TE E-RACK3HE49TE
E-RACK3HE56TE E-RACK3HE84TE E-RI-TE-01H 40 /DH04SA E-RI-TE-01H/I 40 /DH04SA
E-RI-TE-05H 40 /DK17SB E-RP-AC-01FE-RP-AC-01F/I 10 /A1 E-RP-AC-05F 10 /4
E-SD/DC E-SR/DC E-MI-AC-01F E-BM-AC-01F E-BM-AC-011F E-BM-AC-05F E-ME-AC E-RP-AC
PVH45B2ERSNFS1S40C21V11B20 PVM045ER05CS02AABA
PVH45B2ERSNFS1S40C28V11P20 PVM045ER05CS02AACA
PVH45B2ERSNFS2S40C2820 PVM045ER06CS02AAAA
PVH45B2ERSNFS2S40C28V11B20 PVM045ER06CS02AABA
PVH45B2ERSNFS3S40C2820 PVM045ER07CS02AAAA
PVQ50B2ERSNFS1S40CM720 PVM050ER05CS02AAAA
PVQ50B2ERSNFS1S40C21V11P20 PVM050ER05CS02AACA
PVQ50B2ERSNMS1S40C21V11P20 PVM050ER05CS04AACA
PVQ50B2ERSNFS2S40C2120 PVM050ER06CS02AAAA
PVQ50B2ERSNFS2S40C21V11P20 PVM050ER06CS02AACA
PVH45B2ERSA9FS1S40C23V11B20 PVM045ER05CS02AABA00A
PVH45B2ERSA9FS1S40C28V11B20 PVM045ER05CS02AABA00A
PVH45B2ERSB13FS4S40C28V11B20 PVM045ER08CS02AABC00A
PVQ50B2ERSA9FS1S40CM720 PVM050ER05CS02AAAA00A
放大器 E-ME-L-01H-82
放大器 E-ME-T-01H
放大器 E-MI-AC-01F
放大器 E-MI-AC-01F
放大器 E-MI-AC-01F20/2
阿托斯比例减压阀RZGO-TERS-PS
放大器 E-MI-AC-01F/RR
放大器 E-RI-AE
放大器 E-RI-AE-05F
放大器 E-RI-TERS-PS-01H 20
放大器支架 E-K-11B
放大器支架 E-K-32M
编程软件 E-SW-PS
编程软件 E-SW-PS+E-A-PS-USB/DB9+E-C-PS/M12
压力补偿器 HC
叠加式减压阀 HG
叠加式减压阀 HG
叠加式减压阀 HG
叠加式减压阀 HG
叠加式减压阀 HG
叠加式减压阀 HG
叠加式减压阀 HG
叠加式减压阀 HG