Hoffman 78 Water Main Vent Valve

The Hoffman 78 Water Main Vent Valve is engineered for reliable venting in high-pressure water mains. It features a 3/4 inch inlet and a durable cast brass body designed for long service in hot or cold water mains and glycol process lines.

With a temperature rating of 250 Deg F and a pressure rating of 150 PSIG (Operating) with hydrostatic testing up to 450 PSIG, this water main vent valve delivers dependable performance in demanding installations. The unit includes a tapped top, a body that unscrews for maintenance, and a built-in check valve to prevent backflow. Its compact dimensions—2-11/16 Inch diameter by 6-1/2 Inch height—make it suitable for tight spaces and process piping in industrial facilities.

• Inlet size: 3/4 inch
• Inlet connection: threaded straight shank
• Body material: cast brass
• Media handled: water
• Temperature rating: 250 Deg F
• Operating pressure: 150 PSIG (up to 450 PSIG hydrostatic)
• Key features: tapped at top, body unscrews, built-in check valve
• Applications: hot/cold water mains and glycol process lines