Catalog: Duff Company Catalog
Company/Brand: Duff Company
pressure relief valve in Duff Company Catalog by Duff Company
table of contents valves page 1 plumbing industrial ball ... flanged plug float solenoid and boiler valves hydrants floats petcocks and needle ... valves fittings pipe and tubing page 43 ... and strut fi re protection page 141 valves sprinklers fire stops grooved fittings ... page 155 t&s brass central brass powers valves symmons moen and delta faucets and ... parts commercial drains sloan valves parts and optima faucets tubular traps ... circulator pumps dielectric fittings relief valves regulators vents thermometers ... preventers and meters page 353 pressure reducing valves backflow preventers ... diaphragm centrifugal pool industrial pressure booster environmental and well pumps ... softeners filters media control valves and parts tanks resin chemical feed ... sewer and drain and corrugated pipe valves and fittings laboratory fixtures and ...

valves bronze three way ball valve duff co ball valves class 150 and 300 ... flanged ball valves also available stainless or carbon ... steel sizes through 12 actuated ball valves this full port three way ball valve is ... choice fluid systems requiring minimum pressure loss and diverter operation use for ... or gas up to 400 psi replaces 2 ball valves and a tee pneumatic electric actuators ... available for all size valves electric motor valves ball valves for ... compressed air the safety exhaust valve body and ball are drilled to provide ... vent for relieving air pressure downstream tn the closed or off ... position figure 1 the valves provide continuous air relief on the ... downstream side of the valve to 175 psi ideal for use when applied ... pressure to downstream equipment must be ...

steel jacket 3/4 boiler drain asme relief valve 30 lb 1 1/4 circulator wired and ... automatic redundant combination gas valve 24v with pilot filter switches one ... deluxe baked enamel steel jacket steam pressure gauge 3/4 boiler drain asme pop safety ... valve set for r15 psi pa-404a pressure-trol one piece cast iron burners gauge glass ...
switch for proven air flow combination pressure/temperature gauge 1 1/4 circulator ... isolation flanges asme relief valve 30 lb complete installed and wired gas ...
oil burner with cad cell oil solenoid valves r8184g primary control mounted tankless ... with trimmings asme 3/4 pop safety valve silicone sealant boiler drain draft ... regulator pa-404a pressure trol l-4006a aquastat steam gauge low ... tankless coil combination temperature pressure gauge boiler drain asme relief valve ...
sight glass 7 draft regulator asme relief valve model fig no 41285 80806 41286 ... insulation combination temperature pressure gauge asme relief valve high limit ...
duff co watts relief valves heating watts 374a special pressure hot ... water boiler relief valve 3/4 only 550,000 btu watts 530 ... calibrated pressure relief valve calibrated adjustment feature for ... setting valve to relief pressure adjustable range 50-175 lbs all brass ... suited as by-pass thermal expansion relief valve 3/4 fig no 3842 price fig no ... 100xl asme rated self-closing t&p relief valve for water heaters up to 100,000 ... extends the effective life of the valve of overcoming problems created by ... thermostat male inlet and female outlet pressure range 75-150 lbs standard setting 150 ... lbs temperature relief 210of thermostats with special ... ,140 240 340 a.s.m.e rated ansi z21.22 relief valves and automatic gas shut-off ...

heating watts 1156f iron feed water pressure regulator features highest capacity ... unitized maintenance max temp 212of max pressure 100 psi fig no 3792 all 1/2 models ... position it manually forces the valve wide open returning the lever to its ... normal position permits the valve to maintain normal pressure in the ... system watts water pressure regulators duff co watts 1450f iron ... 1156f and rugged iron body diaphragm relief valve set 30 lbs size 1/2 max temp ... of feed water regulator 30 lb diaphragm relief valve and bronze body strainer max temp ... 212of max pressure 100 psi 1/2 union threaded inlet ... price watts n256 bronze body feed water pressure regulator tight seating check valve ... set at 15 psi max temp 212of max pressure 100 psi fig no 3788 cash acme taco and ...

duff co watts 174a a.s.m.e water pressure safety relief valve bronze body safety ... relief valves for pressure protection only of all types of hot ... water heating boiler equipment pressure range 30 to 150 lbs with corresponding ... ,000 9,970,000 12,170,000 14,370,000 2 relief valves heating 30 psi fig price no 3/4 ... 3840 price watts 740 iron body safety relief valves with expanded outlets for hot ... water space heating boilers pressure range 3-75 lbs with corresponding high ... btu rating size for size than other valves on the market female inlet and outlet ...

heating type r adjustable relief valve recommended for unloading operatings on ... and water lines used for pump bypass relief back pressure relief open tank ... discharging and pump closing relief adjustment is done by removing the cap ... not be used as emergency or safety relief valve found in the following ... 47313 47315 47317 47319 47321 47323 relief valves duff co style b pressure ... regulating valve tight closing for dead end service for ... for processing lines or wherever low-pressure equipment is subject to high-pressure ... cast iron body for 3 to 8 balanced pressure regulator insuring accurate control ... even when incoming pressure fluctuates size 1 1/4 1 1/2 2 2 1/2 3 4 ...
lh 65576 65577 asme rated steam safety relief valves up to 450 lbs/hr for low ... pressure steam heating equipment up to 15 lbs ... with lower setting such as 8 lbs for pressure cooker requirements but are not asme ...

examples type purpose 1 2 3 4 reduced pressure zone back two independent check valves ... to main supply lines with intermediate relief valve backpressure or back siphonage ... connections supplied with shut-off valves where there is a high potential lab ... health contamination and continuous pressure applicawaste digesters continuous ... pressure tion car washes reduced pressure detector assy high hazzard rpz valve ... -connections subject to double check valve assembly two independent check valves ... health contamination and continuous pressure applica checks are replaceable for ... repair testing continuous pressure tions main supply lines food cookers ... in by pass low hazzard line dual check valve backflow preventer for low hazard cross ... -connections continuous pressure applications specialty backflow ...

full port resilient seated bronze ball valve 175 psi 140of bronze body construction ... modular design replaceable seats ball valve test cocks easily serviced with no ... out principal provides high capacity relief valve discharge during the emergency ... of combined back-siphonage and back pressure with both checks fouled epoxy coated ... cast iron check valve body with bronze seats 175 psi to 140of ... entrance two inline independent check valves with an intermediate relief valve ... 1 1 1/4 -3 4 -6 watts n36 vacuum relief valve for water service automatically ... also suitable for steam service max pressure 15 psi size weight fig no price 1/2 3/ ... test kit for testing all reduced pressure zone backflow preventers accurate ... testing of zone and relief valve opening differential fouled check ...

-backflowpreven ters-meters reduced pressure zone backflow preventers relief valve ... when ordering please specify fig no and valve size fig no relief valve rubber parts ... 85660 85661 85662 85663 relief valve total 64689 85665 85666 85667 total ...

liner butyl diaphragm max operating pressure=200of standard factory precharge 40 psig for ... tank is heated keeping the system pressure below the relief valve setting fig no ... diatrol shock supressor max working pressure=100 psig max shock pressure=150 psig max ... operating temperature=200 o f precharge pressure=22 psig large size to 48 diameter ... loss of air and water logging the air pressure can be measured and field adjusted ... through the vessel air valve water never contacts steel and the the ... -compressible liquid flowing at a given pressure and velocity causes a surge or spike of ... called water hammer when this occurs a pressure wave travels back through the piping ... until it finds a point of relief dishwashers clothes washers fast ... closing positive shut off valves incorporated in the system all ...

pumps foot and check valves brass check valve brass foot valve duff co controller ... check valve eliminates the tank tee with two and ... switch and gauge and two 1/8 snifter valve and 18 drain plug size 1/2 3/4 1 1 1/4 ... 10524 10525 brady foot and line check valves made of abs plastic foot valves size ... 1 10677 1 1/4 10681 1 1/2 10685 check valves fig price no 37653 10699 10710 10715 ... galvanized foot valves size 1 1/4 1 1/2 2 2 1/2 3 4 5 6 fig no ... 2 2 18972 18973 18974 price pump bypass relief va lve recommended for unloading ... and water lines used for pump bypass relief open tank discharging and pump closing ... relief cau tion should not be used as ... emergency or safety relief valve found in the following applications ... adjustable 25-100 lb 4-for-1 foot valve for jet pump versatile fits 3/4 ...

of the differences in densities duff co pressure drop the difference in pressure between ... usage refers to the amount of solids pressure rating operating the normal pressure at ... to the terminal or maximum differential pressure also can refer to volumetric holding ... capacity of either a solid or a liquid pressure relief valve which permits enough ... from the vessel to prevent extreme pressure build up within hydraulics the study of ... stream enters a separator/filter pressure atmospheric the force exerted by the ... level which is equivalent to 14.7 psi pressure differential the difference in pressure ...

humidifying systems temperature control valves the hot/high pressure filter housings ... cap style is available standard cap no pressure relief no mounting bosses extra thick ... on a wide range of temperatures and/or pressures in addition these housings are ... vegetable oils high temperature/high pressure combination along with the excellent ... information call for our operating pressure vs temperature chart avoid use with ... make them an economical choice maximum pressure 125 psi maximum temperature 125of ... maximum pressure 200 psi maximum temperature 200of slim ... line black housings applications high pressure ro toluene/xylene hydraulic oil food ... them an ideal choice for various high pressure and corrosive applications caps are ... and 20 with top-mount heads nopressure relief avoid use with ketones note viton ...

flow rates range up to 40 gpm with pressure drops as low as 1 psi the ... line clear blue clear red hot/high pressure black high pressure black valve-in-head ... clear valve-in-head big blue big blue natural polypro inlet ... description blue red hot/high pressure black high pressure big blue big blue ... 43439 45378 150135 price indicates pressure relief/bleed button on inlet side of ...
51383 45661 45662 water treatment fleck valve part assemblies service equipment air ... model 3150 seal assembly price feeder pressure relief valve fig no 45534 part 60065 ...
duff co true union ball valves plastic and hose plastic valves cont d ... pvc butterfly valves 150 psi rated valve meets face to face industry standards ... will replace most metal valve lock out handle to lock valve in one of ... chemtrol socket and threaded flanged valves also in stock pvc size 1/4 3/8 1/2 3/4 ... 36769 36770 price pvc compact ball valves hayward txt needle valve size fig no ... 11869 25121 price price pvc ball check valves seats with minimum back pressure free ... 6 available easily converted to foot valve full port size 1/2 3/4 1 1 1/4 1 1/2 2 ... 12021 12024 12025 price 3-way ball valves size 3/4 1 fig no 51769 51742 price ... gate valves sizes 1 1/2 thru 8 available for ... pvc or pvdf horizontal swing check valves sizes 3/4 thru 8 available for quick ...

lubricator is fillble while under pressure rate of lubricator is automatically ... 3/4 1 1 1/4 1 1/2 price duff co pressure range 140 psi max temperature range 40o ... feature also available 1 11294 asme relief valves applications asme air relief ... valve high capacity series asme coded ... protect air receivers and other unfired pressure vessels factory set and sealed specify ... pressure setting at time of order fig no d159-02 ...

fins and coils small whisk type brush valve key utility knife 2 square operator nut ... x 6 for municipal water valves fig no 19777 42464 price blade only 5 ... fig no price 16212 mueller style water pressure testing gauge accurate and dependable ... used for ascertaining correct water pressure and to determine the proper selection ... and adjustment of relief valves regulators etc gauge is 2 1/2 dia with ... connection at top the spud fitted with pressure reducing bushing 0 lbs to 300 lbs fig ... no 50710 price water pressure testing gauge fig no 3695 price page ...

iron 135 abrasive pads 678 angle stop valves 3 abs pumps 387 access panel 210 angle ... valves 13 accustat 296 anthracite 503 ace ... 387 add-a-shower 243 asco solenoid valves 28 add-a-valve 41 aurora pumps 387 ... snips 694 aerator repair kits 263 awwa valves 39 -baerators 258 468 air acetylene ... kits 675 b pressure regulator 328 air chief 625 b vent 336 ... sprocket rims 41 air filters 623 back pressure relief valve 327 429 air float 425 back ... filters 497 air purger 304 backwater valve pvc 596 air regulators 624 bag filters ... 463 485-486 air relief valves 624 bailers 432 438 air separator 307 ... balancing valves 305 air tank kit 697 ball check valve ... offset 189 air volume control 434 ball valves airaider 576-577 actuated 17 aircocks 8 ... air 17 american standard flush valve 227 231 flanged 16 american standard ...

filters 463 482-485 hatco 276 hayward valves 604 hayward bag filter 486 hdpe pipe ... it 690 hole saws 636-637 homestead plug valves 32 honeywell controls 289-290 292 hook ... quick connects 619 hose reels 616 hose valve caps 35 144-148 hose valves 35 144-148 ... pumps 382 hydroservant 409 hydrostatic pressure pump 668 hydrovent 315 -ii tanks 674 ... saw ridgid 669 jackes evans solenoid valves 28-31 jaco fittings 574-575 615 jacuzzi ... kitchen 220 klein drains 190 knife gate valves 33 knife 697 knipex 693 kohler gaskets ... 224 korky flapper 225 kunkle relief valves 311 -llab fittings pvc 592 labcock pvc ... 374 level 654 697 lever operated globe valves 13 lever waste 190 lever waste tool 684 ... lift check valves 13 lift wire 226 for additional ...

636 pilot module 294 pilot operated pressure regulators water 355 pilot operated ... pressure regulators steam 325 pilot valve 331 pin vise 695 pinch valves 33 ... 700 page 740 index pipe holder 425 pressure controls 294 pipe joint compound 725 ... pressure powered pumps 330 pipe outside diameter ... guide 64 pressure pump 668 pipe protection tape 729 ... pressure switches pumps 396 419 pipe rollers 137 ... -138 pressure motive pumps 330 pipe straps 128 ... -611 condensate steam 331 plastomatic valves 605-606 condensate water 386 plastic ... pipe tools 651-652 effluent 382 plastic valve box 599 geyser 376 plastic valves 603- ... -693 grundfos submersible 401-405 plug valves 32 grundfos sump 376 plumb bob 690 ... 396 pool cover pump 384 pump check valves 429-431 pool pumps 389 pump controls ...

regulators air 624 purge and balancing valves 305 regulators purolite 533-541 air 624 ... inside pipe cutter 699 fire protection pressure regulators 143-145 pvc nipples 590 flow ... 293-295 300 quick connects water 619 relief valves quick connects hose 619 air 623 ... asme 308 310-311 quick fix 332-333 back pressure 327 quick john 231 consolidated 311 ... sweat 671 kunkle 311 -rlonergan 311 r relief valves 327 lunkenheimer 311 r tank 674 ... 331 radiator traps 327 temperature and pressure 308 radiator valves 297 348 water ... saddle tee pvc 596 saddle tee 57 saddle valve 211 safe 731 safety anvil 695 safety ... safety rope 425 safety tools 691 safety valves 308 310-311 salt 560 730 salt grid 527 ... saws 669 698 sawzall 639-641 schrader valve 425 scotch marine boilers 283 scraper ...

unit heaters 285 universal rundle flush valve 227 up flush toilet 231 up-z-dazy 427 ... steam 314 vacuum breakers 356-358 valve key 697 page 744 valve boxes 599 valves ... heaters 270-277 water meters 367 water pressure regulators 355 water ram 683 water ... 325-329 watts air 623-624 watts pressure regulators heating 309 watts relief ... valves 308 watts water regulating valves 355 wax rings 224 wd-40 729 weld ...