(d) Class 4: Directly supplied from public water system mains, similar to Class 1 and Class 2 with an auxiliary water supply dedicated to fire department use and available to the premises, such as a non-potable water source located within 1700 feet of the fire department connection, (FDC).

Vacuum Valve Sizing ChartSize of Tank DrainNumber of 1/2" Valves RequiredNumber of 3/4" Valves Required1/2"13/4"11"2113/4"3211/2"432" and Larger54

Fire protection system in this category shall comply with the requirements set forth in class 1 through 4 as appropriate.

Reliance Valves 102 Series Potable Water Pressure Relief Valve with rapid removal of single-piece cartridge for cleaning or replacement.

watts 3/4 relief valve

Type of Fixture or DeviceNominal Pipe Size (Inches)Factor ValueBathtub (with or without single shower head)1/22Bidet3/81Drinking Water Station3/81Dishwasher (Domestic)1/22Dishwasher (Commercial)3/46Kitchen sink, Residential1/22Kitchen sink, Commercial (Pot and Scullery)3/46Vegetable Prep or Bar Sink (Residential)1/22Hand Wash Sinks3/81Shampoo Sinks3/81Lavatory3/81Utility Laundry Sinks 1, 2, or 3 compartments1/22Shower Valve (single head)1/22Shower Valve (Multiple heads)3/46Sinks (service, slop)1/22Sinks flushing rim3/46Laundry Valve1/22Urinal (flushometer type)3/46Toilet (tank type)3/81Toilet (flush valve type)112Hose Connections/Sillcocks/Wall Hydrants1/22

Minimum Air Gaps For Plumbing FixturesMinimum Air GapWhen not affected by a near wallWhen affected by a near wallLavatories and other fixtures with effective openings not greater than one half inch in diameter.1 inch1.50 inchesSink, laundry sinks, goose neck bath faucets and other fixtures with effective openings not greater than three quarters of an inch diameter.1.5 inches2.25 inchesOver rim bath fillers and other fixtures with effective openings not greater than one-inch diameter.2 inches3 inchesEffective openings greater than one inch2 times the diameter of the effective opening2 times the diameter of the effective opening

Occupancy UseDemand FactorsResidentialOne or Two Family Dwelling0.50Multi-residential0.35Hotel0.70SchoolGeneral0.75Shower Room1.00InstitutionalGeneral0.45AssemblyGeneral0.25Restaurant, Cafe0.70Club House0.60Business and MercantileGeneralIndustrial0.25Laundry1.00INDUSTRIALGeneral, Exclusive of Process Piping0.90

2021610 — Per the International Plumbing Code, a fixture exceeding 50 feet from the water heater is the cutoff limit requiring a recirculating pump, which ...

Watts374A

Must be equipped with approved ball cock. Where ball cocks contact tank water they must be equipped with a vacuum breaker at least one inch above the overflow outlets. Where a ball cock does not contact tank water install the ball cock outlet at least one inch above the overflow outlet or provide a vacuum breaker as specified above.

watts 374a-030

Monarch Products manufactures single and multiple compartment grease interceptors. Monarch also specializes in grit, sand, and oil interceptors.

FEBCO FRK 860/880V-RC3 8-10 905412 Check Rubber Parts Kit, 8 To 10 Inch Size. Item: BY6ACV. Model: FRK 860/880V-RC3 8-10. Cross Ref: 905412. Limited ...

Fixture or DeviceFlow PressurePSIFlow RateG.P.M.Lavatory Faucet (Residential)81.5Lavatory Faucet (Non-residential)8.5Kitchen or Bar Faucet (Residential)82.2Sink Faucet (Non-residential)84.5Bathtub Faucet86Laundry Valve or Faucet (Residential)85Shower Head82*Tank-Type Toilet81.28Flushometer-Type Toilet15-201.28Flushometer-Type Urinal15.5Drinking Water Station0.75Outside Faucet or Hydrant105

The Cla-Val Model 210-01 Altitude Valve controls the high water level in reservoirs ... Model 210-01 (Uses Main Valve Model 100-01). Model 210-01 Dimensions ...

og7543.5c

Inlet Size 1/2" Connection Type MNPT Body Material Nickel Plated Brass Max. Pressure 150 PSI Temp. Range 33 Degrees F - 240 Degrees F.

Hot Water Temperatures (Fahrenheit)MinimumMaximumResidential120130*Water Entering the Sanitary Drainage System150Shower Valve120120Tub Filler120120Public & Employee Lavatory120120Residential Lavatory120130Emergency Showers & Eyewash60100Hand Sink in Commercial Kitchen120120Kitchen Type Sink in Office120120Service Sink & Scullery Sink120140* See 10.14 (5)(c) for Exception

(f) Class 6: Combined industrial and fire protection systems supplied from the public water mains only, with or without gravity storage or pump suction tanks.

4.3 · 1/2-in MIP or nominal sweat x 3/4-in MHT · Includes 2 valves for cold and hot water · Maintenance free quarter turn shut off valve.

In addition to an air-gap separation, all fixtures that have threaded hose type connections shall at a minimum, be equipped with an AVB

A backflow prevention assembly does not have to be installed on existing fire protection system installed prior to March 21, 1997, provided that the fire protection system is registered with the public water system and equipped with a UL listed alarm check valve that is properly maintained in accordance with NFPA 25. Alarm check maintenance records must be available for inspection by the Department, its designee or the public water system.

TANK CAPACITY (Gallons)DRAINPIPE SIZE (Inches)Up to 7501"751 - 1,50011/2"1,501 - 3,0002"3,001 - 5,00021/2"5,001 - 7,5003"7,500 and Larger4"

Watts 2 1/2" - 3" 909 and LF909 lead free repair kit- first check kit. Kit includes disc and spring assembly, cover o-ring and lubricant.

Heater Rating (GPM)Valve SizeUp to 51/2-inchOver 5 up to 20 Standard Z21.22 applies3/4-inchOver 20 up to 501-inchOver 50ASME Standard applies1 - 11/4-inch

Sink, laundry sinks, goose neck bath faucets and other fixtures with effective openings not greater than three quarters of an inch diameter.

Examples: An 80-gallon tank with a recovery rate 210,000 BTU must comply with ASME requirements. Two tanks installed, each with 100-gallon capacity with an indirect water heater with a recovery rate of 199,000 BTU feeding tanks shall meet ASME requirements.

2'' Pressure Relief Valve

It's floor heat. What modules are you using? I'm using TekmarNET4 Thermostat V1.2 ...

(g) Residential fire protection systems for one and two family detached dwellings and manufactured homes only. Fire protection systems in three family dwellings meeting NFPA 13D requirements as provided in 780 CMR, Chapter 9, are included in this section.

(e) Class 5: Directly supplied from public water system mains, and interconnected with auxiliary supplies, such as pumps taking suction from reservoirs exposed to contamination, or rivers and ponds; driven wells; mills or other industrial water systems; or where antifreeze or other additives are used.

HotColdATwoToilets (tank type) X 12BTwoLavatories X 122COneBathtub22DOneShower Stall22EOneUtility Sink or Laundry Valve22FOneDishwasher (Domestic)2GOneKitchen Sink22HTwoWall Hydrant4Total121628

Watts374Avs 335

AG = Air Gap RPBP = Reduced Pressure Backflow PreventerDCVA = Double Check Valve Assembly AVB = Atmospheric Vacuum Breaker PVB = Pressure Vacuum Breaker BPIAV = Backflow Preventer w/Intermediate Atmospheric VentType of Hazard on PremisesAcceptable Types of Backflow PreventorsComments*AGRPBPDCVAAVBPVBBFPAV1. Sewage Treatment PlantXX2. Sewage Pumping StationXX3. Food ProcessingXXX**If no health hazard exists4. LaboratoriesXXX**If no health hazard exists5. Fixtures with hose threads on inletsXXXXIn addition to an air-gap separation, all fixtures that have threaded hose type connections shall at a minimum, be equipped with an AVB6. Hospitals, Mortuaries & ClinicsXX7. Plating FacilitiesXX8. Irrigation Systems**XXX*X**Each case should be evaluated individually.*An AVB may be used if no back pressure is possible and no health hazard exists.** A PVB should be installed if back pressure is possible.9. Systems or Equipment Using Radioactive MaterialXX10. Submerged InletsXXX**If no health hazard exists and no back-pressure is possible11. Dockside FacilitiesXX12. Valves Outlets or Fixtures with Hose AttachmentsXXX*Each case should be evaluatedindividually*If no health hazard exists and no back-pressure is possible13. Commercial Laundries & Dry CleanersXX14. Commercial Dishwashing MachinesXXX**If no health hazard exists15. High- and Low-Pressure BoilersXX**If chemicals are added16. Low Pressure Heating BoilersXResidential and small commercial having no chemicals added17. Photo Processing EquipmentXX18. Reservoirs - Cooling Tower Recirculating SystemsXX19. Fire Protection Systems: For cross connection control, fire protection systems may be classified on the basis of water source and arrangement of supplies as follows: (a) Class 1: Direct connection from public water system mains only; no pumps, tanks, or reservoirs; no physical connection from other water supplies; no antifreeze or other additives of any kind; all sprinkler drains discharge to atmosphere, dry wells, or other safe outlets. These systems may or may not have fire department connections. Refer to 310 CMR 22.22(9)(d)1.XXXA backflow prevention assembly does not have to be installed on existing fire protection systems installed prior to March 21, 1997, provided that the fire protection system is registered with the public water system, equipped with a UL listed alarm check valve that is properly maintained in accordance with NFPA 25 and has not undergone substantial modification defined within 310 CMR 22.22(9)(d)3. Alarm check maintenance records must be available for inspection by the Department, its designee or the public water system(b) Class 2: Same as Class 1 except that booster pumps may be installed in the connections from the street mains These systems may or may not have fire department connections. Refer to 310 CMR 22.22(9)(a).XXXA backflow prevention assembly does not have to be installed on existing fire protection system installed prior to March 21, 1997, provided that the fire protection system is registered with the public water system and equipped with a UL listed alarm check valve that is properly maintained in accordance with NFPA 25. Alarm check maintenance records must be available for inspection by the Department, its designee or the public water system.(c) Class 3: Direct connection from public water system mains, plus one or more of the following: elevated storage tanks; fire pumps taking suction from aboveground covered reservoirs, or tanks; and pressure tanks.XX*X**RPBP or DCVA contingent on evaluation of auxiliary supply and on-site system in accordance with 310 CMR 22.22(9)(d)1.(d) Class 4: Directly supplied from public water system mains, similar to Class 1 and Class 2 with an auxiliary water supply dedicated to fire department use and available to the premises, such as a non-potable water source located within 1700 feet of the fire department connection, (FDC).XX**RPBP on evaluation of auxiliary supply and onsite system in accordance with 310 CMR 22.22(9)(d)1.(e) Class 5: Directly supplied from public water system mains, and interconnected with auxiliary supplies, such as pumps taking suction from reservoirs exposed to contamination, or rivers and ponds; driven wells; mills or other industrial water systems; or where antifreeze or other additives are used.X*X**RPBP or air gap contingent on evaluation of auxiliary supply and on-site system.Refer to 310 CMR 22.22(9)(d)1.(f) Class 6: Combined industrial and fire protection systems supplied from the public water mains only, with or without gravity storage or pump suction tanks.XX*XX*RPBP contingent on evaluation of on-site water system. Refer to 310 CMR 22.22 (9)(d)1.(g) Residential fire protection systems for one and two family detached dwellings and manufactured homes only. Fire protection systems in three family dwellings meeting NFPA 13D requirements as provided in 780 CMR, Chapter 9, are included in this section.XXXFire protection system in this category shall comply with the requirements set forth in class 1 through 4 as appropriate.20. Solar Energy SystemsXXX*Residential and small commercial having no chemicals or only USP Glycine added to water21. Single Jacketed Heat ExchangersXXEach case should be evaluated individually

Fixture or EquipmentMethod of InstallationAspirators and ejectorsC-L at least six inches above flood level or receptacle.Dental unitsOn models without built-in vacuum breakers -- C-L at least six inches above flood level rim of bowl.Dishwashing machinesC-L at least six inches above flood level of machine. Install on both hot and cold water supply lines.Flushometers (closet and urinal)C-L at least six inches above top of fixture suppliedGarbage can cleaning machineC-L at least six inches above flood level of machine. Install on both hot and cold water supply lines.Hose outletsC-L at least six inches above highest point on hose line.Laundry machinesC-L at least six inches above flood level of machine. Install on both hot and cold water supply lines.Lawn sprinklersC-L at least 12 inches above highest sprinkler or discharge outlet.Steam tablesC-L at least six inches above flood level.Tank and vatsC-L at least six inches above flood level rim or line.Trough urinalsC-L at least six inches above perforated flush pipe.Flush tanksMust be equipped with approved ball cock. Where ball cocks contact tank water they must be equipped with a vacuum breaker at least one inch above the overflow outlets. Where a ball cock does not contact tank water install the ball cock outlet at least one inch above the overflow outlet or provide a vacuum breaker as specified above.

Watts374Alowes

ATwoToilets (Tank type)BTwoLavatoriesCOneBathtubDOneShower StallEOneUtility Sink or Laundry ValveFOneDishwasher (Domestic)GOneKitchen SinkHTwoWall Hydrants

(b) Class 2: Same as Class 1 except that booster pumps may be installed in the connections from the street mains These systems may or may not have fire department connections. Refer to 310 CMR 22.22(9)(a).

19. Fire Protection Systems: For cross connection control, fire protection systems may be classified on the basis of water source and arrangement of supplies as follows: (a) Class 1: Direct connection from public water system mains only; no pumps, tanks, or reservoirs; no physical connection from other water supplies; no antifreeze or other additives of any kind; all sprinkler drains discharge to atmosphere, dry wells, or other safe outlets. These systems may or may not have fire department connections. Refer to 310 CMR 22.22(9)(d)1.

Watts374Aleaking

Nominal Pipe or Tubing Sizes (inches)Capacity Value1/21 to 43/44.1 to 919.1 to 16.511/416.6 to 2811/228.1 to 55255.1 to 107.521/2107.6 to 182.53182.6 to 287.531/2287.6 to 4254425.1 to 7005700.1 to 110061100.1 to 1300

Reducing Valve pressure setting can be adjusted by loos- ening the jam nut on top of the Reducing Valve and turning the slotted adjusting screw. Turn the ...

Maximum Capacity of Water Supply Line to TankDiameter of Overflow Pipe (inches ID)0 - 50 G.P.M.251 - 100 G.P.M.21/2101 - 165 G.P.M.3166 - 355 G.P.M.4356 - 640 G.P.M.5641 - 1,040 G.P.M.6OVER 1,040 G.P.M.8

(c) Class 3: Direct connection from public water system mains, plus one or more of the following: elevated storage tanks; fire pumps taking suction from aboveground covered reservoirs, or tanks; and pressure tanks.

A backflow prevention assembly does not have to be installed on existing fire protection systems installed prior to March 21, 1997, provided that the fire protection system is registered with the public water system, equipped with a UL listed alarm check valve that is properly maintained in accordance with NFPA 25 and has not undergone substantial modification defined within 310 CMR 22.22(9)(d)3. Alarm check maintenance records must be available for inspection by the Department, its designee or the public water system