311N Series Butterfly Valves

The 311N Series Butterfly valves are ideal for use as throttling valves. With the 10-position index plate, it is easy to repeat consistent flow conditions. Compact in design, this valve is used when space is at a premium.

  • PVC body
  • EPDM liner & O-rings
  • 316 Stainless steel index plate & hardware
  • Rugged, corrosion-resistant coated metal handle
  • 100% bubble-tight seal
  • Integral boot seal (flange gaskets not required)
  • Bolt sets include bolts, washers & nuts sized to accomodate butterfly valve & 2 PVC flanges
  • PVC disc with optimized strength/Cv performance
  • Pressure rating: 150 psi @ 70°F
  • Maximum temperature: 140°F
Stock Description Catalog Pg. Price
3" PVC Butterfly Valve
Item 20638
306.89/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-467
306.89/Each
4" PVC Butterfly Valve
Item 20639
360.1/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-467
360.1/Each
6" PVC Butterfly Valve
Item 20640
544.82/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-467
544.82/Each