Description
Rubber Seated Butterfly Valve – Alpine ZD AWWA C504
Design standard: AWWA C504
Face-to-face length: AWWA C504, flanged in short type
Flange dimension and drill: ASME B16.1(above 72″ ACC. to AWWA C207)
Size: 6″ – 120″
Pressure rating: Class 75B, class 150B, class 250B
Applications: water, drinking water, seawater, and weak corrosive fluid, etc.
Overview:
►1. Sealing system: L profiled resilient seal ring is fixed on the disc by a retainer ring and bolts, and ensures reliable 0 leakage sealing performance in double direction. Besides, this seal ring can be easily adjusted or replaced on site without disassembling the disc and shaft, and doesn’t need any special tools at all.
►2. Body seat: Stainless steel weld and finished body seat ensures long service life.
►3.Disc: Streamlined disc design verified by finite element analysis ensures higher strength and the lower flow resistance
►4.Shaft: We provide a dry working condition for the shaft to keep the corrosion away from the service medium. The key design points as below:
a. The shaft is unexposed;
b. Double seal rings on the shaft bearings to prevent the medium entering the shaft
►5. Shaft Connection: The disc and shaft are connected by key or taper pin connection.
►6. Bearing system: Self-lubricating bearing reduces shaft friction and operating torque; these bearings keep the disc in the center and prevent axial movements.
►7. Shaft packing: For the shaft packing, we could supply PTFE braided packing. That will make the adjustment and replacement online easier and safer without disassembling the actuator.
►8. Top flange: Valve is equipped with ISO 5210 top flange for all types of actuator connection
