The Caleffi 561402A is Discal Check Valve 1/2 in NPT, 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
Connection1/2 in NPT
Max Pressure150 psi
Temp Range32 - 230 °F
Warranty2 Years
Key Features
Genuine Caleffi Part
Factory component: Discal Check Valve 1/2 in NPT.
Direct Fit
Designed to fit and maintain the matching Caleffi separator or air-vent assembly.
Technical Data
| Function | Accessory / replacement part |
|---|---|
| Series | Caleffi |
| Connection | 1/2 in NPT |
| Maximum operating pressure | 150 psi |
| Medium temperature range | 32 - 230 °F |
Documentation
Technical brochureRelated Products
Caleffi 59804A1/4 in AccessoryCaleffi NA102041/4 in NPT AccessoryCaleffi 59474A1/8 in AccessoryCaleffi 562100Accessory
Frequently Asked Questions
What is the Caleffi 561402A?
It is Discal Check Valve 1/2 in NPT, 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 Type:
- NPT Threaded
- Connection Size:
- 1/2 in
