以色列DOROT 58 3*2 58 4*3 58 4*4兩位三通閥門是上海法登閥門直接從以色列進口過來的，質量絕對放心，假一罰十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