DC type low resistance backflow preventer

Technical Parameter

Product model: LHS743X-10/16Q

Nominal diameter: DN50-DN400

Nominal pressure: 1.0-1.6MPa

Dynamic head loss: ≤0.03 MPa

Partition form: air partition or zero pressure partition

Body Material: Ductile Iron

Internal material: 304 stainless steel

Applicable temperature: ≤65℃


Product Detail

Product Features

1. Ultra-low water loss and significant energy saving: at an economical flow rate (flow rate of 2 m/s), the head loss is less than 4mH2O.

2. Air isolation and automatic drainage: when the main valve is closed, the drainer is automatically opened, and the pressure in the middle cavity is zero. Air isolation or zero-pressure isolation is realized between the upstream and downstream of the main valve, and the isolation performance is safe and reliable.

3. Save land and materials, flexible installation: small shape, light weight, the structural length is only 30% of the existing similar products; it can be installed horizontally or vertically.

直流式低阻力倒流防止器(图1)

Main External Connection Dimensions 

DN506580100150200250300
L1190210225250340400460540
H1132142150160192220252280
H2160166176195235266305350
B18393100110143170203230
B2133143170180213240273400