401488 Hoffman #79 Water Vent – 1/2" F x 3/4" M
The Hoffman #79 Water Vent (Model 401488) is a reliable cast brass vent designed for hot, cold, or glycol water mains in process applications. Engineered for efficient moisture discharge, it features a pneumatic bell and built-in check valve, ensuring safe and consistent operation. Ideal for industrial and commercial water systems.
Key Features ✅
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✅ Cast Brass Construction – durable and corrosion-resistant
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✅ 1/2" Female x 3/4" Male NPT Connections – straight shank design
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✅ Max Pressure: 200 psig
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✅ Max Operating Temp: 250°F
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✅ Pneumatic Bell – effective moisture discharge
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✅ Built-In Check Valve – prevents backflow
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✅ Straight Body Pattern – easy installation
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✅ Non-Adjustable – factory set for reliable operation
Technical Specifications 📝
| Specification | Value |
|---|
| Model Number |
401488 / #79 |
| Connection Size |
1/2" F x 3/4" M NPT |
| Max Pressure |
200 psig |
| Max Operating Temp |
250°F |
| Body Material |
Cast Brass |
| Mounting Style |
Straight |
| Adjustable |
No |
| Applications |
Hot, Cold, or Glycol Water Mains, Specific Gravity >0.7 |
Common Symptoms Solved ⚡
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❌ Water main moisture accumulation
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❌ Pressure build-up in water systems
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❌ Backflow issues in pipelines
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❌ Corrosion problems from inferior materials
Frequently Asked Questions (FAQ) ❓
Q: What type of connections does this vent have?
✅ 1/2" NPT female and 3/4" NPT male straight shank.
Q: Can it be used with glycol solutions?
✅ Yes, compatible with water, hot water, or glycol mains with specific gravity >0.7.
Q: Is the vent adjustable?
✅ No, it is factory set for reliable operation.
Q: What’s the maximum temperature and pressure it can handle?
✅ Up to 250°F and 200 psig.
