Butterfly Valve (Cast Iron, Gear, 10K)

Model: PMV-26(FC,Gear)

PMV-26(FC,Gear) is a butterfly valve combining a cast iron body with a SUS304 disc, EPDM seat, and a gear-operated manual operator. With a short face-to-face dimension, concentric construction, and 10K pressure rating as standard, it is used for large-bore manual shutoff lines in the water/wastewater, construction, and plant sectors.

Features

Butterfly Valve (Cast Iron, Gear, 10K) PMV-26(FC,Gear)

Specifications

End ConnectionWAFER
MaterialFC200
Ball/Disc MaterialA351-CF8 (cast stainless, 304 grade)
Seat MaterialEPDM
Pressure RatingJIS 10K
Actuation TypeGear
OriginChina
Size040A, 050A, 065A, 080A, 100A, 125A, 150A, 200A, 250A, 300A, 350A, 400A, 450A, 500A, 600A, 700A, 800A
Stem MaterialSTS 410

Frequently Asked Questions

How do I choose between gearbox and lever operation?
Lever operation completes a 90° stroke in a single handle movement - fast and simple. A gearbox reduces operator torque through a reduction gear, making it suitable for large-bore valves, high differential pressure lines, or sections requiring precise position holding. A gearbox is generally the standard choice for 200A and above.
How do I choose between cast-iron and stainless steel bodies?
Cast-iron bodies offer excellent cost competitiveness and are the standard choice for large-bore lines carrying low-corrosivity fluids such as general industrial water, treated water, and HVAC water. For high chloride concentrations or strongly acidic/alkaline fluids, a stainless steel (SUS304 or higher) or ductile iron specification should be considered.
Can the valve be converted to actuated operation?
By removing the gearbox and attaching a pneumatic or electric actuator to the ISO5211 direct mounting pad, the valve can be converted to automated operation without body replacement. This is a suitable platform for phased automation of large-bore lines - starting with manual gearbox operation and adding an actuator when remote control is later required.
Is partial-opening operation possible?
A gearbox operator can maintain the disc at a desired position with precision, making it suitable for partial-opening operation. However, butterfly valves have an inherently non-linear relationship between disc rotation angle and flow rate, with the 30°-70° range being the practical throttling zone. For sections requiring continuous precise flow regulation, a globe control valve should be considered.

Request a Quote