DV20S1-10B 北京华德节流阀保证

DV20S1-10B北京华德节流阀保证减压阀是通过调节，将进口压力减至某一需要的出口压力，并依靠介质本身的能量，使出口压力自动保持稳定的阀门。从流体力学的观点看，减压阀是一个局部阻力可以变化的节流元件，即通过改变节流面积，使流速及流体的动能改变，造成不同的压力损失，从而达到减压的目的。然后依靠控制与调节系统的调节，使阀后压力的波动与弹簧力相平衡，使阀后压力在一定的误差范围内保持恒定。

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。

DR10-2-30B/315

DR10-2-30B/315M

DR10-3-30B/100

DR10-3-30B/100M

DR10-3-30B/315

DR10-3-30B/315M

DR10-4-50/50

DR10-4-50/50M

DR10-4-50B/100

DR10-4-50B/100M

DR10-4-50B/100Y

DR10-4-50B/100YM

DR10-4-50B/200

DR10-4-50B/200M

DR10-4-50B/200Y

DR10-4-50B/200YM

DR10-4-50B/315

DR10-4-50B/315M

DR10-4-50B/315Y

DR10-4-50B/315YM

DR10-4-50B/50Y

DR10-4-50B/50YM

DR10-6-50/50

DR10-6-50/50M

DR10-6-50B/100

DR10-6-50B/100M

DR10-6-50B/200

DR10-6-50B/200M

DR10-6-50B/315

DR10-6-50B/315M

DR10-7-50/50

DR10-7-50/50M

DR10-7-50B/100

DR10-7-50B/100M

DR10-7-50B/200

DR10-7-50B/200M

DR10-7-50B/315

DR10-7-50B/315M

DR10DP1-40B/150Y

DR10DP1-40B/150YM

DR10DP1-40B/210Y

DR10DP1-40B/210YMDV20S1-10B北京华德节流阀保证

DR10DP1-40B/25Y

DR10DP1-40B/25YM

DR10DP1-40B/75Y

DR10DP1-40B/75YM

DR10DP2-40B/150Y

DR10DP2-40B/150YM

DR10DP2-40B/210Y

DR10DP2-40B/210YM

DR10DP2-40B/25Y

DR10DP2-40B/25YM

DR10DP2-40B/75Y

DR10DP2-40B/75YM

DR10DP7-40B/150Y

DR10DP7-40B/150YMDV20S1-10B北京华德节流阀保证

DR10DP7-40B/210Y

DR10DP7-40B/210YM

DR10DP7-40B/25Y

DR10DP7-40B/25YM

DR10DP7-40B/75Y

DR10DP7-40B/75YM

DR10G-1-30B/100

DR10G-1-30B/315

DR10G-2-30B/100

DR10G-2-30B/315

DR10G-3-30B/100

DR10G-3-30B/315

DR15G-2-30B/100

DR15G-2-30B/315

DR15G-3-30B/100

DR15G-3-30B/315

DR20G-1-30B/100

DR20G-1-30B/315

DR20G-2-30B/100

DR20G-2-30B/315

DR25G-1-30B/100

DR25G-1-30B/315

DR25G-2-30B/100

DR25G-2-30B/315

DR25G-3-30B/100

DR25G-3-30B/315

DR30-1-30B/100

DR30-1-30B/100M

DR30-1-30B/100Y

DR30-1-30B/100YM

DR30-1-30B/315

DR30-1-30B/315M

DR30-1-30B/315Y

DR30-1-30B/315YM

DR30-2-30B/100

DR30-2-30B/100M

DR30-2-30B/100Y

DR30-2-30B/100YM

DR30-2-30B/315

DR30-2-30B/315M

DR30-2-30B/315Y

DR30-2-30B/315YM