The Caleffi R59681 is Hygroscopic Safety Cap- 5020+5021, 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
BodyBrass
Warranty2 Years
Key Features
Genuine Caleffi Part
Factory component: Hygroscopic Safety Cap- 5020+5021.
Direct Fit
Designed to fit and maintain the matching Caleffi separator or air-vent assembly.
Technical Data
| Function | Accessory / replacement part |
|---|---|
| Series | Caleffi |
| Body material | Brass |
Documentation
Technical brochureRelated Products
Caleffi 562100AccessoryCaleffi 561402A1/2 in NPT AccessoryCaleffi 59474A1/8 in AccessoryCaleffi 59804A1/4 in Accessory
Frequently Asked Questions
What is the Caleffi R59681?
It is Hygroscopic Safety Cap- 5020+5021, 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
- Body Material:
- Brass
