Rack and Pinion Butterfly Valve
Product Introduction
With wafer or flange connection, the valve structure is simple and compact with lightweight and can be installed in any positions.
Valve disc without pin connection, zero leakage, long service life.
Small flow resistance coefficient, large flow capacity, and good regulation performance.
Axial thrust bearing or lubricated brass bushing protects the valve stem from overloading.
The valve disc can be made of duplex stainless-steel material, which is corrosion-resistant and wear-resistant.
The top mounting flange of the valve complies with the ISO 5211 standard, allowing for the installation of manual operating mechanisms, or electric/pneumatic actuator.
Seat & Seal ring
The valve seat and seal ring can be replaced separately, reducing maintenance time and cost while extending the service life of valve.
Stem
The unique spline connection between the valve disc and stem of HIVAL reduces hysteresis phenomena and eliminates many problems caused by external connections (additional hardware), enabling easy installation and removal. Featuring an integrated valve stem design, HIVAL incorporates an anti blowout ring above the packing, ensuring that the valve stem fully complies with international standards under operating pressure conditions.
Bearing
Standard bearing seals effectively prevents destructive particles from entering the valve stem bearing, extending its service life.
Packing
Adjustable packing system (packing gland) reduces the risk of medium leakage and allows for easy replacement.
Note：For the material table, please refer to the 《HIVAL Valve Brochure (V4.0.1—202602--HK)》
