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Bell & Gossett Circuit Sentry
Brand: Bell & GossettThe Bell & Gossett Circuit Sentry is a calibrated pressure independent flow limiting valve with a precision machined ball type shutoff valve, and commissioning measurement ports.
The valve is designed for flow limiting-style balancing of both HVAC cooling and heating circuits*.
The valve's internal flow cartridge facilitates easy flushing of the piping upon commissioning the system.
The integral automatic flow rate cartridge maintains the flow rate in the controlled circuit.
The optimum flow rate is maintained at a constant level even under fluctuating pressure conditions from as little as 2 PSI to as much as 60 PSI of differential pressure.
In a properly designed system the valve automatically ensures system balance, regardless of changing pressure conditions normally associated with variable speed pumping.
Integral P/T-ports for needle system and/or drain are available as options, as are a variety of end connections on valves from 1/2" to 2-1/2" in size, with either female NPT or sweat fixed ends, and a union end with sweat, female NPT or male NPT.
Valves are normally equipped with 1" long capped readout ports fitted with internal check valves.
*The valve is not for use in potable water systems.
Features- Keeps constant fluid flow, automatically compensating for fluctuating pressure conditions
- Unique diaphragm pressure control element allows one cartridge (flow cartridge) for most systems
- Large open flow paths for clog-free operation
- Union connection allows for maximum piping flexibility and elimination of unnecessary pipe fittings
- No requirement on pipe lengths before and after the valve for easier application and piping
- Broad product size range (1/2" to 20")
Specifications
Brand
Sizes
- 1/2” – 2½” – Brass Valve with Integrated Ball Isolation/Shut-Off Valve
- 2½” – 20” – Multi-Cartridge Cast Iron Wafer Valve
Flow Range
- 0.33 GPM to 7,200 GPM
Materials of Construction
- Valve Housing: Dezincification Resistant Brass
- Sizes: 1/2" - 2-1/2"
- O-rings: EPDM
Operating Data
- Pressure Class Media: 400 psi @ 250°F
- Temperature Differential: -4° to +250°F
- Minimum Differential Pressure Range: See Submittal A-606.22
- Maximum Differential Pressure Range: 60 PSID
Documentation
Document
Manual
Specification
Submittals
- Circuit Sentry AC Combination Commissioning Valve & Automatic Flow Limiting Valve (A 606.16D) pdf 477 KB
- Circuit Sentry AC2B Valve Kit (A 606.5B) pdf 209 KB
- Circuit Sentry AC2Y Valve Kit (A 606.1B) pdf 221 KB
- Circuit Sentry AC3B Valve Kit (A 606.6B) pdf 218 KB
- Circuit Sentry AC3BB Valve Kit (A 607.13B) pdf 202 KB
- Circuit Sentry AC3BMC Valve Kit (A 606.7B) pdf 222 KB
- Circuit Sentry AC3BMV Valve Kit (A 607.14B) pdf 210 KB
- Circuit Sentry AC3Y Valve Kit (A 606.2B) pdf 228 KB
- Circuit Sentry AC3YMC Valve Kit (A 606.3B) pdf 237 KB
- Circuit Sentry ACB Valve Kit (A 606.4B) pdf 190 KB
- Circuit Sentry ACY Valve Kit (A 606B) pdf 195 KB
- Circuit Sentry Cartridge Internal Automatic Flow Limiting Cartridge for use with Model AC Valves and Model WV and WVB Wafer Valves (A 606.22B) pdf 384 KB
- Circuit Sentry WV - Wafer Valves (A 606.50B) pdf 298 KB
- Combination Wafer WVB with Butterfly Valve (A 622C) pdf 429 KB