The Caleffi NA535891HA is a replacement valve body for the PresCal series, 2", supplied without union fittings and with a pressure gauge fitted. It replaces the body in an existing installation, reusing the tailpieces and connections already in place.
Best for replacing a failed valve body where the existing unions and connections are sound and can be reused.
Specifications sourced from Caleffi North America technical literature. Last reviewed July 2026.
Key Features
Replacement Valve Body Only
Supplied as the valve body without union fittings. The existing tailpieces, unions and connections are reused, so the body is not a complete valve assembly.
Gauge Port Supplied
The gauge port carries a factory-fitted pressure gauge.
Matches the Original Assembly
Dimensionally matched to the series it replaces so the existing fittings, unions and orientation are retained.
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 Valve Body |
| Connection Size | 2" |
| Valve Type | Diaphragm type |
| Material | DZR low lead brass |
| Pressure Gauge | Included |
| Product Series | PresCal |
| Shipping Weight | 9.8 lb (approx.) |
Documentation
Related Products
- Caleffi NA535890HA : Replacement Valve Body 2"
- Caleffi NA535840HA : Replacement Valve Body 1/2"
- Caleffi NA535841HA : Replacement Valve Body 1/2" w/ Gauge
- Caleffi NA535850HA : Replacement Valve Body 3/4"
Frequently Asked Questions
Is Caleffi NA535891HA a complete pressure reducing valve?
No. Caleffi NA535891HA is a replacement valve body supplied without union fittings. It is intended to replace the body in an existing installation, reusing the tailpieces, unions and connections already in place.
Does Caleffi NA535891HA include a pressure gauge?
Yes, this version is supplied with the pressure gauge fitted.
What do I need in addition to Caleffi NA535891HA?
The union tailpieces and connections from the existing installation are reused. If those fittings are damaged or corroded, a complete valve assembly is the better choice.
What is the warranty on Caleffi NA535891HA?
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:
- PresCal
- Product Type:
- Replacement Valve Body
- Valve Type:
- Diaphragm
- Connection Size:
- 2 inch
- Pressure Gauge:
- Included
- Body Material:
- DZR low lead brass