Reduced Pressure Backflow Preventer definition

Reduced Pressure Backflow Preventer means a device containing within its structure a minimum of two independently acting approved check valves, together with an automatically operating pressure differential relief valve located between the two check valves.
Sample 1Sample 2Sample 3
Reduced Pressure Backflow Preventer means an assembly of two independently acting soft seated approved checkvalves, together with an independent differential pressure relief valve located between the checkvalves. The unit shall contain properly located test cocks and resilient sealed shutoff valves at each end of the assembly. To be approved these assemblies must be accessible for inspection and testing and be installed in an aboveground location with no part of the assembly being subject to submersion.
Sample 1Sample 2Sample 3
Reduced Pressure Backflow Preventer means a device to eliminate the potential for backflow or back siphoning of non-potable water into the municipal water supply.
Sample 1

Examples of Reduced Pressure Backflow Preventer in a sentence

  • DESCRIPTION REQ'D Required RO Revised Ordinances, City and County of Honolulu RP Reduced Pressure Backflow Preventer SE Screwed End SJ Slip Joint SP Special Provision SQ Square SS Stainless Steel STD Standard STL Steel T & B Top & Bottom THK Thick TV Top Vertical TYP Typical UBC Uniform Building Code UL Underwriters’ Laboratories, Inc.

  • Air GapRPBP - Reduced Pressure Backflow Preventer DCVA - Double Check Valve AssemblyAVB - Atmospheric Vacuum Breaker PVB Pressure Vacuum BreakerBPIAV - Backflow Preventer with Intermediate Atmospheric Vent Types of Hazard on PremisesAcceptable Types of Backflow Preventers Comments*AGRPBPDCVAAVBPVBBPIAV1.

  • AG- Air Gap AVB- Atmospheric Vacuum BreakerRPBP- Reduced Pressure Backflow Preventer PVB- Pressure Vacuum BreakerDCVA- Double Check Valve Assembly BPIAV- Backflow Preventer with Intermediate Atmospheric Vent Acceptable Types of Backflow Preventers Types of Hazard on Premises22.22(9)(d)1.

  • Reduced Pressure Backflow Preventer (RPBP) shall mean an approved testable backflow prevention device incorporating: (a) two or more check valves, (b) an automatically operating differential relief valve located between the two checks, (c) two shut-off valves, and (d) necessary appurtenances for testing; as defined in state regulations.

  • During the construction period, the temporary water service at a construction site for an industrial-commercial-institutional (ICI) or Multi-Family Residential Facility shall be isolated using a Reduced Pressure Backflow Preventer downstream of the water meter.

  • Boiler heating systems installed in an industrial-commercial-institutional Facility shall be isolated against Backflow caused by Back-Siphonage or Back-Pressure with a Reduced Pressure Backflow Preventer as these systems typically contain chemicals to protect them from corrosion.

  • Where water from a live water main is required to fill a new water main for hydrostatic pressure testing, disinfection and flushing purposes, the water shall be supplied through a Temporary Water Connection between the live water main and the new water main which includes a Reduced Pressure Backflow Preventer.

  • Single-plate, solar hot water heat exchangers installed in a Single-Family Residence shall require Premises Isolation using a Dual Check Backflow Preventer in addition to a Reduced Pressure Backflow Preventer located at the make-up water connection.

  • A fire protection system installed within a New Facility categorized by Canadian Standards Association standard B64.10 as a Severe Cross Connection Hazard shall itself require a Reduced Pressure Backflow Preventer.

  • Backflow prevention devices, including by not necessarily limited to double detector check valve (DDC) assemblies and Reduced Pressure Backflow Preventer (RP) assemblies shall be installed within 25 feet behind the curb face.All BFPD’s shall be screened from view to the maximum practical extent possible as directed by the District Engineer and/or the City Planning Department.


More Definitions of Reduced Pressure Backflow Preventer

Reduced Pressure Backflow Preventer means an assembly of two independently acting approved check valves together with a hydraulically operating mechanically independent pressure relief valve located between the check valves and at the same time below the first check valve. The unit shall include properly located resilient seating test cocks and tightly closing resilient seating shut-off valves at each end of the assembly. The entire assembly shall meet the design and performance specifications as determined by a laboratory and a field evaluation program resulting in an approval by a recognized testing agency for backflow prevention assemblies. The assembly shall operate to prevention assemblies. The assembly shall operate to maintain the pressure in the zone between the two check valves at an acceptable level less than the pressure on the public water supply side of the assembly. At cessation of a normal flow the pressure between the two check valves shall be less than the pressure on the public water supply side of the device. In case of leakage either of the check valves, the differential relief valve shall operate to maintain the reduced pressure in the zone between the check valves by discharging to the atmosphere. To be approved, these assemblies must be readily accessible for in-line testing and maintenance and be installed in a location where no part of the assembly will be submerged.
Sample 1
Reduced Pressure Backflow Preventer means a testable Backflow Preventer that consists of two independently-acting, spring-loaded check valves separated by a spring-loaded differential pressure relief valve, two shutoff valves and four test cocks. A Reduced Pressure Backflow Preventer is typically used to provide protection against a Backflow from Severe Cross Connection Hazards.
Sample 1
Reduced Pressure Backflow Preventer means an assembly consisting of two (2) independently operating approved check valves with an automatically operating differential relief valve located between the check valves. Tightly closing shut-off valves are located on each end of the check valves, and properly located test cocks are positioned for the testing of the check valves and the relief valve. This device is approved for High Hazard category cross connections, and may never be installed in a location or manner which will subject the device to possible flooding or allow the relief valve to become submerged under water.
Sample 1

Related to Reduced Pressure Backflow Preventer

  • Backflow preventer means any device or means to prevent backflow;

  • Backflow prevention device means a safety device used to prevent pollution or contamination of the water supply due to the reverse flow of water from the irrigation system.

  • low voltage means the set of nominal voltage levels that are used for the distribution of electricity and whose upper limit is generally accepted to be an a.c. voltage of 1000V ( or a d.c. voltage of 1500 V). [SANS 1019]

  • Operational Acceptance Tests means the tests specified in the Technical Requirements and Agreed Project Plan to be carried out to ascertain whether the System, or a specified Sub system, is able to attain the functional and performance requirements specified in the Technical Requirements and Agreed Project Plan, in accordance with the provisions of GCC Clause 27.2 (Operational Acceptance Test).

  • Backflow Prevention Assembly means any mechanical assembly installed at a water service line or at a plumbing fixture to prevent a backflow contamination event, provided that the mechanical assembly is appropriate for the identified contaminant at the cross connection and is an in-line field-testable assembly.

  • Single Phase Aerosol Air Freshener means an aerosol air freshener with the liquid contents in a single homogeneous phase and which does not require that the product container be shaken before use.

  • Rechargeable Electrical Energy Storage System (REESS) means the rechargeable energy storage system that provides electric energy for electrical propulsion.

  • Generator Forced Outage means an immediate reduction in output or capacity or removal from service, in whole or in part, of a generating unit by reason of an Emergency or threatened Emergency, unanticipated failure, or other cause beyond the control of the owner or operator of the facility, as specified in the relevant portions of the PJM Manuals. A reduction in output or removal from service of a generating unit in response to changes in market conditions shall not constitute a Generator Forced Outage.

  • Operating pressure means the pressure at which the parts of an irrigation system are designed by the manufacturer to operate.

  • Generator Planned Outage means the scheduled removal from service, in whole or in part, of a generating unit for inspection, maintenance or repair with the approval of the Office of the Interconnection in accordance with the PJM Manuals.

  • Double Phase Aerosol Air Freshener means an aerosol air freshener with the liquid contents in two or more distinct phases that requires the product container be shaken before use to mix the phases, producing an emulsion.

  • Gasification means the substoichiometric oxidation or steam reformation of a substance to produce a gaseous mixture containing two or more of the following: (i) oxides of carbon; (ii) methane; and (iii) hydrogen;

  • Ultra Low Sulfur Diesel Fuel means diesel fuel that has a sulfur content of no more than fifteen parts per million.

  • Combustion turbine means an enclosed fossil or other fuel-fired device that is comprised of a compressor, a combustor, and a turbine, and in which the flue gas resulting from the combustion of fuel in the combustor passes through the turbine, rotating the turbine.

  • Interconnector means equipment used to link the electricity system of the State to electricity systems outside of the State;

  • Wind Turbine means a mechanical/electrical system that converts the kinetic energy of blowing wind into mechanical or electric power.

  • Bulk gasoline plant means a gasoline storage and distribution facility with an average daily throughput of 20,000 gallons (76,000 liters) of gasoline or less on a 30-day rolling average.

  • wind turbine generator or “WTG” means a structure comprising a tower, rotor with three blades connected at the hub, nacelle and ancillary electrical and other equipment which may include J-tube(s), transition piece, access and rest platforms, access ladders, boat access systems, corrosion protection systems, fenders and maintenance equipment, helicopter landing facilities and other associated equipment, fixed to a foundation;

  • Generation Interconnection Feasibility Study means a study conducted by the Transmission Provider (in coordination with the affected Transmission Owner(s)) in accordance with Tariff, Part IV, section 36.

  • port townsite means the townsite to be established pursuant to this Agreement near the harbour;

  • Hydraulic lift tank means a tank holding hydraulic fluid for a closed-loop mechanical system that uses compressed air or hydraulic fluid to operate lifts, elevators, and other similar devices.

  • generating plant means the generating facility described in Schedule 1 as amended from time to time;

  • Air-purifying respirator means a respirator with an air-purifying filter, cartridge, or canister that removes specific air contaminants by passing ambient air through the air-purifying element.

  • Generator Maintenance Outage means the scheduled removal from service, in whole or in part, of a generating unit in order to perform necessary repairs on specific components of the facility, if removal of the facility meets the guidelines specified in the PJM Manuals.

  • Plasma arc incinerator means any enclosed device using a high intensity electrical discharge or arc as a source of heat followed by an afterburner using controlled flame combustion and which is not listed as an industrial furnace.

  • PNode has the meaning set forth in the CAISO Tariff.