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Threaded NPT Fittings by Size
4" NPT Fittings

4" NPT Fittings

4" NPT = 4.5" Diameter

4" NPT Forged Carbon Steel Half Coupling 3000# Fitting
$79.95 As low as $59.96

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Steel 4" ID Hose x 4" NPT Male Pipe Thread KC King Combination Nipple Fitting
$49.95 As low as $34.97

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4" ID Hose x 4" NPT Male 316 Stainless Steel King Nipple
$99.95 As low as $64.97

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4" NPT 304 Stainless Steel Half Coupling 150# Fitting
$65.95 As low as $52.76

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4" NPT 316 Stainless Steel Half Coupling 150# Fitting
$66.95 As low as $53.56

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4" NPT Aluminum Half Coupling Weld Bung
$59.95 As low as $41.97

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4" NPT 304 Stainless Steel Full Coupling 150# Fitting
$89.95 As low as $71.96

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4" NPT 304 Stainless Steel Full Coupling 3000# Fitting
$225.95 As low as $180.76

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4" Pipe Thread Black Steel Full Merchant Coupling 150# Fitting
$78.00 As low as $46.80

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4" NPT Stainless Steel Weld Bung Flange | Select 304 or 316 SS
$74.95 As low as $59.96

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4" NPT Carbon Steel Top Hat Flange Spud Weld Bung 150# Fitting
$79.95 As low as $39.98

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4" NPT 316 Stainless Steel Full Coupling 150# Fitting
$99.95 As low as $79.96

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4" NPT Aluminum Full Coupling
$79.95

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4" Hose Barb x 4 NPT Male Thread | Aluminum KC Combination King Nipple
$66.95 As low as $46.87

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