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Butterfly Valves

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Acclaimed as the most durable of all resilient-seated butterfly valves in the industry, this valve excels in a wide variety of applications.
Cast in both wafer and tapped-lug patterns in a wide variety of material choices, DEMCO butterfly valves feature a one-piece body for minimum weight and maximum strength. The unique stem hole design in the disc ensures a dry stem journal and the hard-backed seat allows ease of installation, reliable operation, and is field-replaceable without special tools. DEMCO butterfly valves are available in sizes 2 in. through 36 in. (50 mm through 900 mm).

Engineered for long-term, maintenance-free performance, DEMCO butterfly valves are commonly selected for a variety of applications spanning a wide range of industries:

  • Chemical and petrochemical
  • Agriculture
  • Oil and gas drilling and production
  • Food and beverage
  • Water and waste water
  • Cooling towers (HVAC)
  • Power
  • Mining and materials
  • Dry bulk handling
  • Marine and government

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Butterfly Valves

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Item #

Style

Valve Size

Number of Studs

Number of Cap Screws

NE-C-2 Wafer/lug 2 in
50 mm 		4 8
NE-C-2 1/2 Wafer/lug 2 1/2 in
65 mm 		4 8
NE-C-3 Wafer/lug 3 in
80 mm 		4 8
NE-C-4 Wafer/lug 4 in
100 mm 		8 16
NE-C-5 Wafer/lug 5 in
125 mm 		8 16
NE-C-6 Wafer/lug 6 in
150 mm 		8 16
NE-C-8 Wafer/lug 8 in
200 mm 		8 16
NE-C-10 Wafer/lug 10 in
250 mm 		12 24
NE-C-12 Wafer/lug 12 in
300 mm 		12 24
NE-I-2 Wafer/lug 2 in
50 mm 		4 8
NE-I-2 1/2 Wafer/lug 2 1/2 in
65 mm 		4 8
NE-I-3 Wafer/lug 3 in
80 mm 		4 8
NE-I-4 Wafer/lug 4 in
100 mm 		8 16
NE-I-5 Wafer/lug 5 in
125 mm 		8 16
NE-I-6 Wafer/lug 6 in
150 mm 		8 16
NE-I-8 Wafer/lug 8 in
200 mm 		8 16
NE-I-10 Wafer/lug 10 in
250 mm 		12 24
NE-I-12 Wafer/lug 12 in
300 mm 		12 24
NE-D-2 Wafer 2 in
50 mm 		4 8
NE-D-2 1/2 Wafer 2 1/2 in
65 mm 		4 8
NE-D-3 Wafer 3 in
80 mm 		4 8
NE-D-4 Wafer 4 in
100 mm 		8 16
NE-D-5 Wafer 5 in
125 mm 		8 16
NE-D-6 Wafer 6 in
150 mm 		8 16
NE-D-8 Wafer 8 in
200 mm 		8 16
  Results 1 - 25 of 67 1 2 3 
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