Our factory production of butterfly valves, small size, light weight, flexible operation, Good regulatory opening and closing rapidly.Not only has a good seal, and fluid resistance.
Valve body with alloy material, it is can transport a variety of liquids and slurries, with anti-corrosion and anti-friction properties.
Connection:flange universal standard,On the folder, Butt welding type butterfly valve, Lug connection
switch power:manual valve,hydraulic valve,pneumatic valve and others.
Hebei tongli production of stainless steel stem all welded ball valve medium pressure trunnion ball valve temperature control range is in commonly: - 30-150 °C. Stainless steel stem all welded ball valve medium pressure trunnion ball valve are widely used in hot water, oil, heating, chemical, heat pipe network, and so on.
Stainless steel stem all welded ball valve medium pressure trunnion ball valve diameter and temperature corresponding to the table:
*All wafer and lug type BFV are designed to allow for 2" of insulation
*Wafer body features 2 or 4 flange alignment holes for easy installation
Lugged body with drilled and tapped holes may be used for dead-end service(Please specify when ordering)
*ISO 5211 top flange for easy actuation
*One-piece shaft design, blow-out proof,ensures positive disc positioning and accurate flow control.
*3 shaft bushing/seals provide shaft support for proper alignment and backup for the primary shaft seal formed by the disc/seat interface
*disc edge is machined and polished 360º to assure low friction,which results in low operating torque plus increased seat life
*Precision taper pins,vibration-proof,ensure positive shaft-disc connection
*The phenolic-backed,non-collapsible,resilient seat is perfectly secured and fully lined in the body,which isolates the body componenets from the media and provides the primary shaft seal.Seat is field replaceable.
*Absolutely tight shut-off in either flow direction
*Can be installed in any desired direction
Our conventional butterfly valves are made of cast iron and are ISO certified. But because of their own material reasons, not in a special environment for long-term work.. But because of their own material reasons, not in a special environment for long-term work, so our factory on the traditional product innovation, our products are now all the replacement. Now, any part of our products can be customized and replaced for specific environments and jobs.
Prior to mounting,the part-turn actuator must be checked for any damage
Damaged parts must be replaced by original spare parts
Mounting ia most easily done with the valve shaft pointing vertically upward.But mounting is also possible in any other position ;the actuator may be mounted in any position.
The QT-series electric actuators are supplied with a female drive output.the ISO5211 bolt patterns are provided for actuator mounting.The actuator drive bush is removable for ease of machining.
It is mandatory for the actuator to be firmly secured to be a sturdy mounting bracket or directly mounted to be valves' ISO mounting pad.High tensile bolts or studs with spring locking washers must be used.
The valve outpot shaft must be in lined with the actuator output drive to avoid side-loading the shaft .To avoid backlash,flexibility in the mounting bracket or mounting should not be allowed.