Socket Weld Pipe

HART Industrial O-Ring Unions are engineered to provide Class 3000 Service and are the most popular union in the industry for general purpose applications. The flat face design provides turbulence-free fit across seats. This design is ideal where piping requirements dictate the necessity of having a flat face seal to make and break the pipe line. All HART Unions are made in the USA!
Standard O-Ring Union Features:
Turbulence Free: All unions provide a turbulence-free fit across the seats
O-Ring Isolation: The O-Ring seal is strategically located in the thread piece face reducing O-Ring media contact and added protection against abrasives and erosion.
Precision Machined components: All unions are precision machined to provide high quality and fail-safe leak proof reliability.
Interchangeable End Connections: Threaded, socket weld, and butt-weld ends are interchangeable. This feature reduces overall costs by eliminating unnecessary nipples, bushings, couplings and inserts.
Material Versatility: Unions can be provided in all standard metals or combination of metals. This includes 304 Stainless, 316 Stainless, A 105 Carbon Steel, Brass, Monel 400, Hastalloy, and Titanium.
Excellent vibration resistance: Seals will not loosen, even under extreme pressure and pressure surges.