Double Flange Butterfly Valve PN16 -HVAC

Double Flange Butterfly Valve

PN 16

The Double Flange Butterfly Valve PN16 is designed for effective flow control in various industrial applications. Constructed from high-quality ductile iron, this valve ensures durability and robust performance. The double flange design allows for easy installation and secure connection to piping systems. With a pressure rating of PN16 (1600 kPa), it is suitable for both water and neutral liquids, providing reliable shut-off and throttling capabilities. The valve’s compact design and low torque requirements make it an efficient and cost-effective solution for a wide range of applications.

FEATURES & SPECIFICATIONS

PRESSURE & TEMPERATURE RATINGS

Working Pressure 16bar
Shell Testing Pressure (x1.5) 24bar
Working Temperature -20°C ... 110°C (EPDM)
-10°C ... 80°C (NBR)
Seat Testing Pressure (x1.1) 17.6bar
Suitable Media Water, Oil & Gas

MATERIAL SPECIFICATIONS

Part	Material
Body	Ductile Iron
Disc	Ductile Iron Aluminium Bronze Stainless Steel 304 Stainless Steel 316
Stem	Stainless Steel 410 Stainless Steel 431
Seat Ring	EPDM/NBR
Seat Ring	EPDM/NBR
Bushing	Bronze

INSTALLATION & OPERATION GUIDE

Ensure sufficient space for valves for easy installation, operation, maintenance and replacement.
Verify the valves are suitable for the operating condition such as medium, operating pressure / temperature, etc.
Check the I.D. of the flange and pipe to ensure free disc movement.
Valves shall be mounted on flanges only after the counter flanges have been welded to pipe and cooled down tot he atmospheric temperature. Welding heat may damage the rubber seat of the valves. Never weld the flanges with valves installed. No gasket is required for installation of rubber seated butterfly valves.
Position the valves carefully between flanges. Accurate centering between flanges is essential to prevent any damages and problems during operation.
Valves should be installed by placing bolts through the hole and tightening carefully, ensuring even contact between the flange and seat.Too tight of space may cause damages to the seat and should be avoided.
Cross tighten all the bolts diagonally to distribute the loads evenly over the valves.
Turning the valves to ensure sufficient disc clearance.
Valves equipped with manual operators must be operated manually. Excessive external force on the operation of valve may damage the valve and / or operator.
Blind flange with short pipe should be used for dead end installation.