The Caleffi 130900A is a Flo-Set 130 series manual balancing valve with a fixed Venturi orifice, 2" NPT female connections, and integral pressure test ports. Constructed of DZR low-lead brass and certified to NSF/ANSI/CAN 372 (ICC-ES file PMG-1360), it precisely sets circuit flow in hydronic and plumbing systems: the fixed orifice keeps the measurement Cv constant at every valve position, so flow is calculated from a single differential pressure reading regardless of the adjustment setting.
Six full turns of adjustment with ten decimal graduations per turn give fine control from fully closed to a maximum Cv of 30.58, and the memory stop lets the valve be closed for service and returned to the exact balance position.
Best For
- Proportional balancing of hydronic heating and chilled water circuits
- Systems commissioned with differential pressure meters at the test ports
- Potable water applications requiring certified low-lead components
- Chilled water lines using the optional pre-formed insulation shell
Key Features
Fixed Venturi Orifice
The measurement orifice Cv never changes with valve position, so one differential pressure reading gives the true flow rate at any setting.
Integral PT Ports
Built-in pressure test ports with EPDM seal elements accept standard differential pressure meter probes without added fittings.
6-Turn Precision Adjustment
Six full turns with 10 decimal graduations per rotation and a geared indicator allow fine, repeatable flow settings.
Memory Stop
The valve can be shut for service and reopened to the recorded position, preserving the system balance.
Certified Low Lead
DZR low-lead brass body, bonnet, and stem meet NSF/ANSI/CAN 372, certified by ICC-ES under file PMG-1360.
Technical Specifications
| Series | Flo-Set 130 |
| Orifice Type | Fixed Venturi |
| Connection | 2" NPT female |
| Max Cv (Position 6) | 30.58 |
| Adjustment | 6 turns, 10 decimal graduations per turn |
| Accuracy | ±10% |
| Max Working Pressure | 232 psi (16 bar) |
| Working Temperature Range | -4 to 250°F (-20 to 120°C) |
| Suitable Fluids | Water, glycol solutions (max 50% glycol) |
| Body, Bonnet, Control Stem | DZR low-lead brass |
| Pressure Test Ports | DZR low-lead brass body, EPDM seal elements |
| Certifications | NSF/ANSI/CAN 372, ICC-ES file PMG-1360 |
Documentation
Technical Datasheet 01251/22 NA - Flo-Set 130 Series- Submittal Sheet 02182-25 NA - Fixed Orifice Balancing Valve
- ICC-ES PMG-1360 Low-Lead Product Certificate
Design Resources
Related Products
- Caleffi CBN130900 – Pre-formed insulation shell for this 2" valve
- Caleffi 142291A – 2" variable orifice alternative (142 series)
- Caleffi NA10829 – 2" FNPT isolation full-port ball valve for service isolation
Frequently Asked Questions
What is the maximum Cv of the Caleffi 130900A?
30.58 at position 6 (fully open). Ten decimal graduations per turn allow the Cv to be set precisely anywhere below that maximum.
How is flow measured on the Caleffi 130900A?
A differential pressure meter connects to the integral PT ports. Because the Venturi orifice is fixed, the measurement Cv is constant at every valve position and flow is calculated from a single reading.
Is the Caleffi 130900A approved for potable water?
Yes. The DZR low-lead brass construction meets NSF/ANSI/CAN 372 and is certified by ICC-ES under file PMG-1360.
Is insulation available for the Caleffi 130900A?
Yes. The matching pre-formed shell, sold separately, minimizes heat loss and prevents condensation in chilled water service.
What is the warranty on the Caleffi 130900A?
Caleffi covers this product under its standard two-year limited warranty against defects in material and workmanship. ZOT Supply is an authorized Caleffi distributor.
- Type:
- Static
- Series:
- Flo-Set 130
- Flow Capacity (Cv):
- 30.58
- Temperature Gauge:
- No
- Connection Type:
- FNPT
- Connection Size:
- 2 Inch
