减压阀的作用原理是靠阀内流道对水流的局部阻力降低水压，水压降的范围由连接阀瓣的薄膜或活塞两侧的进出口水压差自动调节。定比减压原理是利用阀体中浮动活塞的水压比控制，进出口端减压比与进出口侧活塞面积比成反比。这种减压阀工作平稳无振动；阀体内无弹簧，故无弹簧锈蚀、金属疲劳失效之虑；密封性能良好不渗漏，因而既减动压（水流动时）又减静压（流量为0时）；特别是在减压的同时不影响水流量。4DP03 3E02F20003B1 G12C1
4DP03 3E02F20003B1 G24 XYR1
4DP03 3E02F10003B1 G24 XY
4DP03 3H02F13003B1
4RP01 B 25 G12 D1
4DP03 3E02F20003B1 G12C1 R1
4RP01 B 25 G24 D1
4RP01 D 16 G24 D1 C1
4DP03 3EB2F20003B1 G12C1XYR1
4DP03 3EB2F20003B1 G12 X R1
4DP06 3E43F40005B1 G12C1X R1
4DP03 3E02F20003B1 G24 Y
4DP03 3E02F10003B1 G24 XYR1
4RP01 B 25 G24 C1
4DP03 3E43F20005B1 G12 X R1
4DP03 3E43F13003B1 G12C1
4RP01 A 25 G12 D1 AM
4RP01 A 25 G24 D1 AM
4RP01 D 25 G24 D1 AM
4RP01 D 25 G12 C1 AM
4DP03 3E43F13003B1 G24C1 YR1U6
4RP01 D 25 G24 C1 C1
4RP01 D 25 G** C1 C1
4RP01 D625 G12 C1 C1
4RP01 D625 G24 C1 C1
4RP01 A 25 G24 C1 C1
4RP01 D 25 G24 C1 C1 N0
4RP01 D 25 G12 D1 C1
4RP01 D 25 G24 D1 C1
4RP01 D 45 G12 D1 C1
4RP01 D 45 G24 D1 C1
4RP01 D 16 G24 C1 C1
4DP03 3H43F20003B1
4DP03 3E02F20003B1 G24C1XYR1
4DP03 3E02F20003B1 G24C1XY
4RP01 A 25 G12 D1 C1
4RP01 A 25 G24 D1 C1
4RP01 B 25 G12 D1 C1
4RP01 B 25 G24 D1 C1
4DP03 3H02F20003B1
4RP01 B 45 G12 D1 C1
4RP01 A 45 G12 D1 C1
4RP01 A 45 G24 D1 C1
4DP03 3E43F20003B1 G12C1X
4DP03 3E43F20003B1 G12C1XYR1
4DP03 3E02F20003B1 G12C1XYR1
4DP03 3EB2F20003B1 G12C1
4DP03 3E43F20003B1 G12C1X R1
4DP03 3E43F13003B1 G24C1X R1
4RP01 D 25 G12 D1
4DP03 3E43F20003B1 G12 R1
4DP03 3E43F10003B1 G12 X
4RP01 D 25 G12 D1 C1 N0
4RP01 D 25 G24 D1 C1 N0
4RP01 D 45 G12 D1
4DP03 3E02F20003B1 G12 XYR1
4RP01 D 25 G24 D1
4DP03 3E43F10003B1 G12C1XYR1
4RP01 D 45 G24 D1
4DP03 3E02F13003B1 G24C1X R1
4DP03 3E02F20003B1 G12C1X R1
4DP03 3E43F10003B1 G24C1X R1
4DP03 3E43F13003B1 G24C1N0
4DP03 3E02F13003B1 G12C1X R1
4DP03 3E02F13003B1 G24C1 Y
4DP03 3E43F20003B1 G12C1XY
4DP03 3E43F13003B1 G12C1X R1
4RP01 D 25 G12 D1 N0
4RP01 D 25 G24 D1 N0
4DP03 3H43F13003B1
4DP02 VH43F12005A1
4DP03 3E02F20003B1 G24 XYR1AM
4RP01 D 25 G12 D1 AM
4RP01 D 45 G24 D1 AM
4DP03 3E43F20003B1 G24C1 YR1U6
4DP02 VE02F12003A1 G12C1XYR1
4DP03 3E02F10003B1 G12C1
4DP03 3E02F13003B1 G12C1 YR1
4DP03 3E02F13003B1 G24C1XY
4DP02 VE02F90 03A1 G12C1
4DP02 VE43F90 03A1 G12C1
4DP02 VEA2F12003A1 G12C1
4DP02 VEB2F12003A1 G12C1
4DP02 VEA3F12003A1 G12C1
4DP02 VEB3F12003A1 G12C1
