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Valves
Valves
Valves
Valves
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Valves Used in Underground Applications
• Gate Valves– Metal Seated– Resilient Seated
• Butterfly Valves
• Plug Valves
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Metal Seated Gate Valves
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Metal Seated Gate Valves
• Used in large diameter applications
• Available in sizes - 144”
• Manufactured to AWWA C-500
• Allowable Leakage
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Metal Seated Gate Valves
• Applications– Potable Water
– Non-Potable Water
– Sewage
– Water Treatment
– Wastewater Treatment
– Forcemain Water
– Forcemain Sewage
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Metal Seated Gate Valves
• Due to weight of disc and friction between seats, bypass valves required on large diameters to equalize pressure
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Metal Seated Gate Valves
Spur Gear Bevel Gear
Bypass Valves
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Metal Seated Gate Valve
• Valves installed in a horizontal position should be equipped with rollers, tracks and scrapers.
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Metal Seated Gate Valve
•Rollers assist the travel of the gate assembly along tracks set into the valve body.
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Metal Seated Gate Valve
•Scrapers are placed ahead of the rollers to clear thetrack of obstructions or foreign matter.
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Resilient Wedge Gate Valves
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Resilient Wedge Gate Valve
• Available in sizes - 54 “
• Manufactured to AWWA C-509 and C550
• Bubble tight seal - zero leakage allowed
• Epoxy coated
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Resilient Wedge Gate Valve
• Applications– Bubble Tight Shut Off– Throttling– Potable Water– Non-Potable Water– Sewage– Water Treatment– Wastewater Treatment– Forcmain Water– Forcemain Sewage
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Resilient Wedge Gate Valves
Available Operators
2” Nut Hand wheel OS & Y
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Resilient Wedge Gate Valve
Bevel GearHorizontal Installation
Spur GearVertical Installation
Available Operators
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Post Indicator Valves
Post IndicatorValve
Indicator Post
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Post Indicator Valves Bevel Gear
18” - 24”
Valves
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Resilient Wedge Gate Valve
– Mechanical Joint– Flanged– Threaded– Tyton/Push On– Tapping
•Available End Connections
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Butterfly Valves
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Butterfly Valves
• Available in sizes to 144”
• Manufactured to AWWA Standard C504
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Butterfly Valves
• Applications– Bubble Tight Shut Off
– Throttling
– Potable Water
– Non-Potable Water
– Water Treatment
– Wastewater Treatment
– Forcemain Water
– Forcemain Sewage
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Butterfly Valves
Mechanical Joint2” Operating Nut
Flanged - Hand-Wheel
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Butterfly Valves
Indicating Non-Indicating
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Butterfly Valves
• Available End Connections• Flanged• Mechanical Joint• Wafer
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Coatings
• Primer Coating
• Tar Coating
• Epoxy Type Coating
Specify Coatings
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Gate Valve or Butterfly Valve?
• Traditionally butterfly valves have been used in large diameter applications 14” +
• Old metal seated design gate valves did not perform as well as butterfly valves
• New Resilient Wedge design offers alternative to butterfly valves
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Smooth Unobstructed Waterway
• High flow characteristics
• 100% smooth passage ensures non-turbulent flow
• No sediment build-up
• Will not impede line cleaning tools
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Resilient Wedge Gate Valve
• No Seat Rings
• Nothing to be damaged by debris or corrosion
• Obstruction free waterway
• Valve will not become difficult to operate due to corrosion
Advantages vs Metal Seated Valve
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Metal Seat
•Raised Seat Ring
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Resilient Seat
• No Seat Ring
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14” - 36” Resilient Wedge Gate Valve
• Bypass valves not required - water pressure assists the wedge during travel
• Effective method of throttling without chattering
• Maintenance free
Advantages vs Metal Seated Valve
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14” - 36” Resilient Wedge Gate Valve
• High strength iron wedge fully encapsulated with rubber permanently bonded to metal
• Design incorporates two seating surfaces
• No seat wear - wedge is clear of waterway
Advantages vs Butterfly Valves
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14” - 36” Resilient Wedge Gate Valve
• Full size unobstructed waterway allows for line cleaning without removing the valve
• High flow characteristics reduce pumping costs
• Valve chambers are not required
Advantages vs Butterfly Valves
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Eccentric Plug Valve
•Used in sewerage applications where solids are present
•Available in sizes 2” - 24”
•Designed for 175 p.s.i. up to 12” and 150 p.s.i. 14” and larger
•1/4 turn to open and close. Gear Actuators recommended on 6” and larger
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Plug Valve Features
- Valve bonnets are fully sealed and bolted to the valve for easy removal of the plug should maintenance be required
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Plug Valve Features
- Available end
connections -
flanged, mechanical
joint and grooved
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Plug Valve Features
- Welded nickel seat to
ensure no possibility
of damage to the
plug face
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Plug Valve Features
-The valve plug is cast
iron entirely coated
with Buna-N rubber
to ensure corrosion
resistance
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Valve Accessories
Floor Stand Chain Wheel
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Valve Accessories
Stem Guide Stem Extension
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Floor Stands
Standard Valve Spur Gear