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  • Dart Union Bronze to Bronze Seat Union
  • Meets ASME B16.39 The standard union for most installations.
    • 3/8 - 2 NPS (10 - 50 DN) - 300lb (136 kg) steam working pressure at 450°F.
    • 3/8 - 2 NPS (10 - 50 DN) - 600lb (272 kg) cold water, gas, or oil pressure - non-shock.
  • Bronze Seat, on both sides of the joint. Resists corrosion.
  • True bearing surfaces, unlike ordinary union seats.
  • Bodies and nuts are high test air-refined malleable iron - generally superior to mild steel in most services.
  • Can be repeatedly
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Unit of Measure

Specifications

NPS

3/4

DN

20

Dimension - A

2 5/16 inches

Dimension - A

59.00 mm

Dimension - B

1 3/8 inches

Dimension - B

35.00 mm

Dimension - C

2 3/16 inches

Dimension - C

56.00 mm

Dimension - D

2 1/2 inches

Dimension - D

64.00 mm

Weight (Black)

0.82 lbs

Weight (Black)

0.37 kg

Weight (Galv.)

0.86 lbs

Weight (Galv.)

0.39 kg