The Caleffi 535006HA is a replacement cartridge for Caleffi 535 series pressure reducing valves. It is a service part installed into an existing valve body and is not a complete valve.
Best for restoring an installed PRV that no longer holds setpoint, where the body and connections remain sound.
Specifications sourced from Caleffi North America technical literature. Last reviewed July 2026.
Key Features
Factory Replacement Cartridge
The serviceable internal assembly for Caleffi 535 series pressure reducing valves, allowing the valve to be restored in place rather than replaced.
Body Stays in the Piping
Cartridge replacement is performed without breaking the pipe connections, so the installed body, unions and fittings remain undisturbed.
Restores Original Performance
Replacing a fouled or worn cartridge returns the valve to its published pressure-regulation performance.
Low-Lead Brass Construction
Wetted surfaces carry a weighted average lead content below 0.25%, meeting Section 1417 of the Safe Drinking Water Act for potable water service.
Technical Specifications
| Product Type | Replacement Cartridge |
| Compatibility | 535H 1/2, 3/4 and 1 inch valves |
| Product Series | Accessories |
| Shipping Weight | 0.7 lb (approx.) |
Documentation
Related Products
- Caleffi 533000H : Replacement Cartridge for 533H Series
- Caleffi 535009HA : Replacement Cartridge for 535 Series
Frequently Asked Questions
What is Caleffi 535006HA?
Caleffi 535006HA is a replacement cartridge for Caleffi 535 series pressure reducing valves. It is a service part, not a complete valve, and it is installed into an existing valve body already in the piping.
Does Caleffi 535006HA carry an ASSE 1003 listing on its own?
No. ASSE 1003 certification applies to the complete pressure reducing valve assembly. A replacement cartridge is a component of that assembly and is not separately listed.
When should the cartridge be replaced rather than the whole valve?
Replace the cartridge when the body and connections are sound but the valve no longer holds its setpoint, typically from seat wear or debris fouling. Replace the whole valve if the body or unions are damaged or corroded.
What is the warranty on Caleffi 535006HA?
Caleffi covers this product under its standard two-year limited warranty against defects in material and workmanship from the date of purchase. ZOT Supply is an authorized Caleffi distributor.
- Product Series:
- Accessories
- Product Type:
- Replacement Cartridge
- Compatibility:
- 535H 1/2, 3/4 and 1 inch valves
