Butterfly Valves
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$21,158.90
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$19,000.10
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$1,723.25
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$1,416.66
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$26,595.09
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$131,988.98
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$2,807.96
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$1,793.03
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$8,044.16
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$8,990.94
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$17,684.61
Subject to factory lead times
$3,636.42
Subject to factory lead times
$21,158.90
Subject to factory lead times
$19,000.10
Subject to factory lead times
$1,723.25
Subject to factory lead times
$1,416.66
Subject to factory lead times
$26,595.09
Subject to factory lead times
$23,144.35
Subject to factory lead times
$38,435.76
Subject to factory lead times
$31,149.52
Subject to factory lead times
$82,753.81
Subject to factory lead times
$131,988.98
Subject to factory lead times
$2,807.96
Subject to factory lead times
$2,171.48
Subject to factory lead times
$6,525.06
Subject to factory lead times
$7,121.35
Subject to factory lead times
$1,793.03
Subject to factory lead times
$1,486.43
Subject to factory lead times
$2,888.30
Subject to factory lead times
$2,253.96
Subject to factory lead times
$4,375.84
Subject to factory lead times
$3,465.52
Subject to factory lead times
$8,044.16
Subject to factory lead times
$8,990.94
Subject to factory lead times
$17,684.61
Subject to factory lead times
$3,636.42
Subject to factory lead times
- A disc on a stem rotates 90° to open and close. The disc never leaves the flow path, so there's some pressure drop even wide open, but butterfly valves are short, light, and cheap, especially in big sizes. They're the default for water, HVAC, and a lot of process service from 2 inches up to whatever size you need.
- Wafer sits between two flanges and the flange bolts squeeze it in place. Lug has threaded inserts so you can unbolt the downstream pipe without losing the upstream seal, required for any dead-end service. Double-flanged has its own flanges and bolts up like any other flanged valve. Wafer is most common; reach for lug when you need true dead-end isolation.
- Resilient seated valves use an elastomer liner against the disc. They're tight, cheap, and good to roughly 150 psi and 250°F. High-performance valves use offset disc geometry and a PTFE or metal seat to handle higher pressure, higher temperature, and tighter shutoff. Triple-offset valves go further, with all-metal seats good for steam and demanding chemical service.

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About NISCO Inc.
NISCO offers a wide range of pressure gauges & instruments, diaphragm seals, thermometers, valves, and flow control products to the industrial and commercial marketplaces, as well as other resellers like ourselves. We can also provide other value-added services such as gauge repair, NIST traceable calibration, diaphragm seal assembly, and valve automation. NISCO takes pride in providing extensive product knowledge, helpful customer service, and market competitive pricing to help fit whatever need you may have because it is our goal to be regarded by our customers as the best supplier of pressure, temperature, and flow control products.
