简要说明：德国VATTEN牌的多若特58系列阀门产品：估价：1000，规格： 58 3*2 58 4*3 58 4*4，产品系列编号：齐全

　　两位三通阀门是上海法登阀门直接从以色列进口过来的，质量绝对放心，假一罚十Dorot Model 57 & 58 “FlushGAL” Back Flushing Valve
Cast iron body, Direct Diaphragm-Sealing valve,
designed for automatic back-flush of filtration filters
Features:
• Sturdy body made of cast iron (optional SST version)
• Frictionless position exchange
• Low head-losses
• Easy installation, no special tools or expertise required.
• Grooved (model 58) or flanged (model 57) connections
available
• Special design model for disc filtration systems
• Optional model for high-pressure filtration systems available