Search
-
HVAC Equipment
-
Ductless Mini Splits
- Ductless Mini Splits
- Shop By Zone
- Shop by BTU
- Shop By Brand
- Components
- Accessories
-
HVAC Parts & Supplies
- HVAC Parts & Supplies
- HVAC Supplies
- HVAC Tools
-
HVAC Replacement Parts
- Blower Housing & Assemblies
- Blower Wheels
- Breakers, Contactors & Disconnects
- Capacitors & Transformers
- Control & Circuit Boards
- Filter Driers & Accumulators
- Gas Valves & Conversion Kits
- Heat Exchangers
- Thermal Expansion Valves (TXV)
- Temperature Controls
- Wall Brackets & Parts
- Miscellaneous Parts
- O-Rings & Gaskets
- Hydronics
- Motors
- Thermostats & Zoning
-
Plumbing
-
Pool
-
Electrical
-
Air Quality
-
Tools & Supplies
-
Door Security & Hardware
Caleffi 304040A Vacuum Relief Valve 1/2 Inch MNPT
Availability:
In Stock
Ships same day if ordered by 12 pm
- $60.90
- $60.90
- Unit price
- / per
✓
Better Price in Cart
Manufacturer pricing rules prevent us from advertising our discount — no account or email required to see it.
-
Secure Payments
-
Easy Returns
-
Expert Advice
-
Fast Shipping
Product Description
The Caleffi 304040A is a 1/2 inch MNPT vacuum relief valve. This valve functions as a vacuum breaker for domestic water systems. It allows air to enter the piping, preventing vacuum conditions that can pull water and harm equipment.
- Complies with ANSI Z21.22 and CSA 4.4 standards.
- Ideal for hot and cold water storage tanks.
- DZR low-lead brass construction.
Product Highlights
Protection against vacuum conditions for water heaters and supply tanks.
Product Information
Standard Information
- Brand: Caleffi
- MPN: 304040A
Technical Specifications
Complete your install
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
Loading install accessories...
Add install kit to cart
—
Related Products
- Choosing a selection results in a full page refresh.