- 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 installed and removed.
- Straight way through. No cored parts to hold liquid or sediment.
- Extra heavy shoulder on swivel end and in the nut to stand pipe strains, vibration, and wrench abuse.
- Bronze seat ball joint, with extra wide seating surfaces.
Unit of Measure
NPS |
N/A 1 |
DN |
N/A 25 |
Dimension - A |
N/A 2 5/8 inches |
Dimension - A |
N/A 67.00 mm |
Dimension - B |
N/A 1 11/16 inches |
Dimension - B |
N/A 43.00 mm |
Dimension - C |
N/A 2 9/16 inches |
Dimension - C |
N/A 65.00 mm |
Dimension - D |
N/A 3 inches |
Dimension - D |
N/A 76.00 mm |
Weight (Black) |
N/A 1.30 lbs |
Weight (Black) |
N/A 0.59 kg |
Weight (Galv.) |
N/A 1.40 lbs |
Weight (Galv.) |
N/A 0.62 kg |
