The Caleffi NA535861HA is a replacement valve body for PresCal 535H series pressure reducing valves in 1". It is supplied without union connection fittings, which are installed in the field, and is a service item rather than a complete valve assembly.
Best for replacing a damaged 535H body where the existing tailpieces, unions and pipe connections are sound and can be reused.
Caleffi 2-Year Limited Warranty. Caleffi North America warrants each Caleffi product free from defects in material and workmanship for two years from the date of shipment or delivery. Repair, replacement or refund of the purchase price is at Caleffi's discretion and is the sole remedy. Full terms are set out in the Caleffi North America Limited Warranty. ZOT Supply is a Caleffi distributor.
Key Features
Replacement Valve Body Only
Supplied as the valve body with connections field installed. Existing tailpieces, unions and fittings are reused, so this is not a complete valve assembly.
Matches the Original Assembly
Dimensionally matched to the 535H series it replaces, so existing fittings, orientation and pipe runs are retained.
Gauge Port Supplied
The gauge port carries a factory-fitted pressure gauge.
Same Regulating Performance
The body accepts the standard 535H cartridge and controls across the same 15-90 psi outlet range as the complete valve.
Technical Specifications
| Product Type | Replacement Valve Body |
| Product Series | PresCal 535H |
| Compatibility | 535H series, 1" |
| Connection Size | 1" |
| Connection Type | Field installed; union fittings not supplied |
| Outlet Pressure Range | 15-90 psi |
| Maximum Working Pressure | 300 psi |
| Maximum Working Temperature | 180°F |
| Pressure Gauge | Factory fitted |
| Body Material | DZR low-lead forged brass |
Specifications taken from Caleffi datasheet 01265/23.1 NA and the Caleffi North America catalogue listing for the 535 series replacement valve body, which itemises this part number and its gauge configuration.
Documentation
Frequently Asked Questions
Is the Caleffi NA535861HA a complete pressure reducing valve?
No. It is the valve body only. Union tailpieces and connection fittings are installed in the field, normally reusing those from the valve being replaced.
What do I need in addition to the NA535861HA?
The union tailpieces and connection fittings for your pipe type and size. These are not supplied with the body, so the existing fittings must be sound enough to reuse.
Which series does the NA535861HA fit?
Caleffi PresCal 535H series pressure reducing valves in 1".
Does the NA535861HA include a pressure gauge?
Yes. The gauge port carries a factory-fitted pressure gauge.
- Product Type:
- Replacement Valve Body
- Valve Type:
- Diaphragm
- Product Series:
- PresCal 535H
- Pressure Gauge:
- Included
- Connection Size:
- 1 inch
- Body Material:
- DZR low lead brass
