INSTRUCTION MANUAL EXT Potable Water Butterfly Valves ® Installation Recommendations 15 ... 20° 0 > 0 90° 90° 31 2 360° Outdoor Indoor Only Technical Data Mediadomestic potable water Flow characteristicmodified equal percentage Controllable flow range 90° Sizes2", 3", 4", 5", 6" Materials: Bodyductile iron ASTM A536 Body finishblack epoxy powder coating DiscAluminum bronze SeatEPDM Shaft416 stainless steel Bushingsglass reinforced epoxy resin Media temp. range-22...250°F [-30...120°C] Body pressure rating200 psi Close-off pressure200 psi Maximum velocity12 FPS Leakage0% Warranty2 years CRN0C12102.*CL EXT-141.. Ductile Butterfly Valves 72093-00001.A2 ® General Maintenance The following periodic preventative maintenance practices are recommended for all Butterfly Valves. 1. Operate the valve from full open to full closed to assure operability. 2. Check flange bolting, actuator mounts and hangers for evidence of loosening and correct as needed. 3. Inspect the valve and surrounding area for previous or existing leakage at flange faces or shaft connections. 4. Check piping and/or wiring to actuators and related equipment for looseness and correct as needed. 5. If not in use, exercise the butterfly valve (full open and close) at least once a month. Safety Precautions Before removing the valve from the line or loosening any bolts, it is important to verify the following conditions: 1. Be sure the line is depressurized and drained. 2. Be sure of the pipeline media. Proper care should be taken for protection against toxic and/or flammable fluids. 3. Never remove the valve without an Operator (Manual or Automatic) already attached to the valve shaft. 4. Never remove the Operator from the valve while the valve is in the pipeline under pressure. 5. Always be sure that the disc is cracked approximately 5° off of the closed position before removing the valve. Storage of Butterfly Valve Assemblies • Assemblies must be stored indoors, protected from the elements. • Materials received on job sites that have long installation lead times should receive extra protection from construction damage. • Valve faces must be protected from abrasion, cutting and nicking, as this will damage the face and may cause flange area leaks. • Electric actuators cannot be stored in wet, damp or caustic areas. • Do not store construction material on top of valve assemblies. EXT Potable Water Butterfly Valves Instruction Manual Valve Installation Procedure Position the connecting pipe flanges in the line to insure proper alignment prior to valve installation. Spread the pipe flanges apart enough to allow the valve body to be located between the flanges without actually contacting the flange surfaces. Exercise particular care in handling the valve so as to prevent possible damage to the disc or seat faces. Note: Unless otherwise noted, actuator should be mounted at or above pipe center line for all actuator types. 1. When installing in Victaulic piping systems, use Victaulic 41 series flange nipples. 741 flanges not recommended without the use of adapter rings. 2. EXT Series Butterfly valves are designed to be installed between ANSI 125/150 flat-faced, raised face, slip-on or weld neck flanges. 3. Do NOT use flange gaskets on EXT Series Butterfly valves. 4. Valve should be installed a minimum of 6 pipe diameters from upstream or downstream elbows, strainers, pumps, etc. For Lug style valves: a. Place the valve between the flanges. b. Install all bolts between the valve and the mating flanges. Hand tighten bolts as necessary. 5. Before completing the tightening of any bolts, the valve should be centered between the flanges and then carefully opened and closed to insure free, unobstructed disc movement. 6. Using the sequence, tighten the flange bolts evenly to assure uniform compression. In assembling flange joints, the resilient seating surface shall be uniformly compressed. See image for reference. A small gap may be present if max torque is reached. Do not over tighten bolts or stripping may occur. 7. If an actuator is to be operated, electricity should be connected to the unit in accordance with the local electrical codes. 8. Cycle the valve to the fully open position, then back to the fully closed position, checking the actuator travel stop settings for proper disc alignment. The valve should be operated to assure that no binding is taking place. If no power is available, use the manual handwheel. 9. The valve is now ready for operation. Max Torque for Bolts Valve SizeBolt SizeMax Torque [ft-lbs] 2...4”5/8”70 5...6”3/4”120 1 4 3 2 5 6 7 8 1 4 3 2 5 6 7 8 9 1011 12 > 00 > 0 72093-00001.ANext >