Ductile Iron Body Double Eccentric Butterfly Valve Worm Gear
Operation For Water Works
- These valves are for water or air service where a drop-tight
shut-off and double flanged body are required.
- Suitable for variety of liquids and gaseous media in water works,
power plants, sewage plants, process industries, chemical and
petrochemical plants etc. for tight shut-off and control.
- Ideally suited for isolating as well as throttling
Manufacturing and Testing Standard
BSEN 593(BS 5155) / IS13095/ AWWA-C-504
200 to 2700 mm
BS EN 593 (BS 5155) : PN6, PN10 and PN16 z
AWWA-C-504 : Class 25, 75 and 150
Hand Lever (Up to 150mm)
Quarter Turn Worm Gear Box (Manual)
Electrical Actuator with Quarter Turn Worm
Hydraulic/ Pneumatic Operator
Wafer/ Double Flanged
Flanges drilled to IS/ BSEN / AWWA/ ANSI/ DIN/ as per customer
Available in Wafer, Flanged, Mechanical Joint and Flange x
Mechanical Joint End Connections in AWWA Classes 150B and 250LB.
360° uninterrupted body seat with no shaft penetration insures leak
free performance. Type 304 Stainless Steel provides long life and
corrosion free mating surface for resilient seat.
Ductile Iron Disc
Ductile Iron provides strength and rigidity to withstand dynamic
forces from flow and pressure transients. The added strength allows
the disc design to have a smaller cross section providing improved
head loss characteristics.
Special formulated elastomers for chemical resistance and long
cycle life. The 360° resilient seat is uninterrupted for positive
Stainless Steel shafts meet AWWA C504 diameter requirements.
Through-shafts provided standard on sizes 3”- 24” and available on
30” and larger when specified.
Tangential Taper Pins
Stainless Steel Taper Pins with lock nut and o-ring seal utilize
tangential forces of the taper pin and lock nut to provide the most
secure method available of locking the disc to the shaft.
Traveling Nut Actuator
The traveling nut design provides characterized closure during the
last half of travel. Exclusive externally adjustable stops are
rated to 450 ftlbs of input torque. Standard FA10 motor mounting
flange provides ease of automation.
Shaft seal is a self-adjusting/wear compensating V-Type packing.
Packing is easily replaced without removal of the valve from the
Low friction bearings are self-lubricating and non-corrosive, for a
long, trouble-free life.
Material of Construction
|Body||Disc||Body Seat Ring||Disc Seal||Shaft|
|Cast iron||Cast iron||SS AISI 304||N.R.||SS AISI 410|
|Cast Steel||Cast Steel||SS AISI 316||N. B. R||SS AISI 304|
|Ductile Iron||Ductile Iron||SS AISI 316L||EPDM||SS AISI 316|
|SS CF8||SS CF8||SS AISI 410||VITON||SS AISI 316L|
|SS CF8M||SS CF8M||SS AISI 431|| || |