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 Product Feature:

   Butterfly valve offers economical, efficient, and reliable service for grooved end piping applications. It is easily installed with two grooved end couplings. 
   The rugged ductile iron body is epoxy coated on all wetted surfaces and all surfaces exposed to the atmosphere. This provides both internal and external corrosion protection.
   The EPDM encapsulation on the disc provides protection from chemical attack and erosion and also forms a bubble tight seal against the inside wall of the valve. O-rings in EPDM prevent atmospheric corrosion to internal parts.
   The top flange is symmetric to accept many different manual or gear operators as well as electric, pneumatic, and hydraulic actuators. The extended neck allows ample room for insulation.
   The EPDM encapsulated disc is designed to minimize turbulence and maximize good flow characteristics as well as provide positive sealing, protection against erosion and corrosion, and low sealing torque.

Installation Instructions

1. The valve must be kept in a dry and ventilated room, and the valve plate should be opened 4-5 degrees.
2. Long-term storage should be checked regularly. Machined surfaces should be cleaned of surface dirt once every 6 months.
3. When installing, carefully check whether the use of the valve is consistent with the performance specifications.
4. Before installation, installation and debugging personnel should carefully read the operation manual, electric device manual, circuit diagram, etc., and be familiar with the installation and debugging procedures.
5. Pay attention to the following items during installation:
A. Check whether there are sundries in the valve channel and sealing surface, and clean them in time. The valve should be installed in time after unpacking, and do not loosen the fastening bolts of the valve at will.
B. When butterfly valve is installed, the butterfly plate should be in the closed position.
6. The connecting bolts between the butterfly valve and the pipeline should not be tightened individually at one time, but should be tightened alternately in the corresponding direction of the circumference to prevent the flange breakage or leakage caused by uneven tightening.
7 butterfly valve is generally one-way use, installation should be noted, the direction of the arrow on the valve body represents the pressure direction of the medium when the valve is closed.
8. Butterfly valve can be installed in any Angle of the pipeline, but should not be inverted, usually vertical or horizontal installation.
9. If you need to adjust the flow during use, adjust the opening position of the driving device for control.
10. When the electric butterfly valve leaves the factory, the opening and closing stroke of the control mechanism has been adjusted well. In order to prevent the direction of the power supply from being wrong, the butterfly valve should be manually switched to the half-open position for the first time, and then switch to check whether the direction of the indicating disk is consistent with the direction of the valve.
11. Seal test must be carried out after valve repair.