The Caleffi 59804A is Check Valve 1/4 in (502620), a genuine Caleffi component for hydronic air, dirt and magnetic separation systems.
Product data compiled from Caleffi North America technical documentation. Last reviewed June 2026.
FunctionAccessory
Connection1/4 in
Max Pressure150 psi
Temp Range32 - 230 °F
Warranty2 Years
Key Features
Genuine Caleffi Part
Factory component: Check Valve 1/4 in (502620).
Direct Fit
Designed to fit and maintain the matching Caleffi separator or air-vent assembly.
Technical Data
| Function | Accessory / replacement part |
|---|---|
| Series | Caleffi |
| Connection | 1/4 in |
| Maximum operating pressure | 150 psi |
| Medium temperature range | 32 - 230 °F |
Documentation
Technical brochureRelated Products
Caleffi NA102041/4 in NPT AccessoryCaleffi 59474A1/8 in AccessoryCaleffi 561402A1/2 in NPT AccessoryCaleffi 562100Accessory
Frequently Asked Questions
What is the Caleffi 59804A?
It is Check Valve 1/4 in (502620), a genuine Caleffi replacement part / accessory.
Which products does it fit?
It is designed for the matching Caleffi separator or air-vent assembly in its product family. Confirm compatibility against your model before ordering.
2-Year Limited Warranty. Backed by Caleffi North America's limited warranty against defects in material and workmanship for two years from date of shipment. See Caleffi's limited warranty for full terms.
- Type:
- Accessory
- Series:
- Air Vent
- Connection Size:
- 1/4 in
