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MANUALS (2)
Product Highlights
Description
- Disc-type vent
- Built-in Check Valve
- For automatic venting of convectors and radiators
- Can be disassembled to clean without removing from line
- 1⁄8" NPT straight shank
- Maximum steam pressure of 15 psig (1.0 bar)
Specs
| Application: | Convector Vent |
|---|---|
| Size: | 1/8" |
| Type: | Disc-type Vent Non-Vacuum |
| System Type: | Steam |
| Max Pressure: | 15 psig |
| Max Operating Pressure: | 50 psig |
| Mount: | Straight |
| Adjustability: | Non-Adjustable |
| Material: | Steel |
| Body Pattern: | Straight |
| Thread Type: | Male |
| Temperature Range (F): | 140°F - 240°F |
| Max Temp (F): | 240°F |
| Min Temp (F): | 140°F |
| Thread Size: | 1/8" |
Questions?
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Product Reviews
Professionally Installed by Contractor
Good Product
I would love to buy same product again
Does the trick!!
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Works very well but expensive and limited life.
Worked like a charm
Excellent Small Footprint Valve
Product works as advertised.
Good product
Great product
Product Q&A
5 QuestionsQ: How do you clean the Hoffman Specialty Valve
Asked by THOMAS 10 years ago
Add your answer
Verified Reply- SupplyHouse StaffThese valves can be cleaned with vinegar if necessary.
Q: Is this used for hydronic (hot water) baseboards?
Asked by Nick 14 years ago
Add your answer
Yes. It's not obvious from the general description of the product but if you look up some of the specifications and read the installation instructions, it's perfectly acceptable for bleeding air from hot water based hydronic systems. And American made and repairable!
Hi, I had not seen this kind of air valves before I bought it either and since its description was saying it is for a steam convectors I decided to try it for my steam cast iron ceiling radiator. Since the valve was small and I did not have enough space to install normal steam air valve it worked fine for my purpose. As much as I could find out about it (from the Hoffman's link below) http://completewatersystems.com/product/convector-steam-vents/ this valve is a Disc-type vent as opposed to float type vent(the way most of the steam vents are). In other words it uses different thermodynamics principle to open and close thus letting the air from the steam radiators/convectors out so the steam can get in it and heat. That being said it seems it is designed to work with steam systems which work at a higher temperature than the hot water systems. It is probably tuned to close when that high temperature steam gets to it, but it might not work well with hot water as its lower temperature might not close it properly and might leak water out. That is the best opinion I can offer.
yes, it is used for hydronic systems to bleed air out of the system. Also used on steam systems. Check and set cap position for each respective system.
Q: Is this a comparable or better replacement for the Hoffman model 500?
Asked by 15 years ago
Add your answer
Verified Reply- PexSupply StaffThe 508 is the replacement for the obsolete Model 500 valves.
The Hoffman 508, 1/8 Straight Steam Convector Air Valve is a better replacement valve
Q: CAN THIS BE USED ON GLYCOL SYSTEMS
Asked by 15 years ago
Add your answer
Verified Reply- PexSupply StaffYes, it can.
Q: Can this #508 be installed in the horizontal position?
Asked by 15 years ago
Add your answer
Verified Reply- PexSupply StaffYes. It can be installed either vertically or horizontally.