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Type formulation method of fire-fighting ball valve

Fire ball valve model by class, group code and sphere seal code, nominal pressure, nominal diameter, and pipe connection form code, forms are as follows:

ball seal type code no.
one-way seal
two-way seal S
table 3  
connecting with piperoad type code no.
two-end flange F
two-end thread L
one end flange, one end thread

Model example

End flange, end thread, nominal diameter 65mm, nominal pressure 1.6 MPa two-way seal fire ball valve model for: FQS65/160
Two end flange, nominal diameter 50, nominal pressure 4.0 MPa one-way seal fire ball valve model for: FQ50/4.0 F

Shanghai Remy Valve Manufacturing Co., Ltd.
Remy ball valve Contact Remy
Shanghai Enine Pump & Valve Co., Ltd.
Enine ball valve Contact Enine
Shanghai Saitai Pump & Valve CO., Lid.
Saitai ball valve Contact Saitai