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valves stop and waste valves duff co plumbing valves stop valves size standard pattern size sweat fig no price threaded fig no price sweat fig no price 5795 1/2 5796 3/4 threaded fig no price 5790 5792 3/8 1/2 3/4 5853 5857 5995 5798 5800 angle stop valves size compression stop and waste valves sweat fig no price 6005 1/2 6007 3/4 thread fig no price 6000 6002 stop and waste caps size 5/16 3/8 fig no 6201 44411 price sweat to copper compression to copper cpvc to cpvc boiler drains standard pattern great if you can t use an open flame or don t want to solder size 1/2 3/4 fig no 6031 6032 price size ...

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valves compact pattern bronze valves duff co check valves providing an economical alternative to standard pattern valves gate valves size 1/2 3/4 1 1 1/4 1 1/2 2 2 1/2 3 4 sweat fig no price 6761 6762 6763 6764 6765 6766 6767 6768 threaded fig no price 6752 6753 6754 6755 6756 6757 6758 6759 6760 size 1/2 3/4 1 1 1/4 1 1/2 2 2 1/2 3 4 sweat fig no price 6780 6781 6782 6783 6784 6785 6786 6787 6788 threaded fig no price 6771 6772 6773 6774 6775 6776 6777 6778 6779 compact pattern ball valves compact stop and waste valves size 1/2 3/4 1 1 1/4 1 1/2 2 2 1/2 3 4 sweat fig no price 4163 4167 21204 38834 ...

duff co sillcocks valves outside faucets frost proof sillcocks size sweat fig no price 6011 6013 thread fig no price all 1/2 swt x mip length regular pattern anti-syphon pattern 1/2 3/4 6008 6010 frostproof hydrants 4 6 8 10 12 14 fig no 6019 6021 6022 6027 6028 6030 price fig no 44417 44418 44419 44420 price bury size 2 3 4 5 approx overall length fig no 25449 5304 5306 18460 price anti-syphon pattern provides freeze protection water from hydrant will drain in a steay gentle stream for approximately 15-20 seconds after hydrant is turned off health protection in the event of back syphonage ...

valves wall hydrant encased non-freeze a flush fully enclosed fully protected installation in any type wall construction hinged box cover can be locked to prevent vandalism the same key that unlocks operates hydrant amply wide flange of box extends over wall opening and provides neat flush installation for modern building facades fig no dcz1300 price duff co outside faucets wall hydrant exposed non-freeze automatic draining anti-syphon where the added security of a box hydrant is not required optional wall clamp shown to anchor hydrant in wall stainless steel face provides for flush installation ...

ball valve with waste duff co compression ball valve heavy duty brass construction rated for 600 psi of water oil or air teflon seals compression end for solderless connection to copper tubing valves size 1/2 3/4 1 sweat fig no price 17609 17610 17611 threaded fig no price 17612 17613 17614 size 1/2 3/4 1 fig no 42935 42936 42937 price pet cocks tested at 80 lbs air pressure standard spring bottom 5/32 port size 1/8 1/4 3/8 1/2 air cock fig no price 8450 8453 8456 8458 double male fig no price 8460 8462 8464 8466 double female fig no price 8469 8471 8473 8475 male x female fig no price 8479 ...

valves duff co for additional information call 610-275-4453 or fax 610-279-6299 please call for current prices page 9

duff co valves call or fax duff s valve experts phone 610-275-4453 fax 610-279-6299 page 10 for additional information call 610-275-4453 or fax 610-279-6299 please call for current prices.

valves valve installation tips duff co soldering and silver brazing analyze the application to determine which valve is best suited for installation keeping in mind the service for which the valve is recommended before installing the correct valve review the installation instructions to prevent damage to the valve and assure its maximum efficiency 1 cut tube and square ream burr and size 5a silver brazing method apply brazing wire or rod at point where tube enters valve socket keep flame away from rod or wire as it is fed into the joint move flame back and forth as alloy is drown into joint when ...

duff co valves class 125 valves 125 psi saturated steam 200 psi non-shock cold water oil or gas bronze gate globe and check valves size 1/4 3/8 1/2 3/4 1 1 1/4 1 1/2 2 2 1/2 3 gate valve sweat thread fig no price fig no price globe valve sweat thread fig no price fig no price angle globe sweathread read th fig no no rice fig p price swing check sweat thread fig no price fig no price 3586 3598 3601 3605 4111 4116 3608 4117 3618 3551 3553 3554 3562 3563 3566 3568 3573 3578 3582 37556 37557 17760 17761 17762 17763 17764 17765 3620 3634 3640 3643 3648 4118 4119 3652 38645 38646 38647 38648 38649 ...

valves duff co bronze gate glove and check valves class 150 valves 150 psi saturated steam 300 psi non-shock cold water oil or gas gate valve non-rising stem size gate valve rising stem thread fig no price price globe valve sweat fig no price angle globe thread fig no price swing check thread fig no price sweat fig no pric e thread fig no thread fig no price 1/4 3/8 1/2 3/4 1 1 1/4 1 1/2 2 3968 3973 4052 4075 4139 4136 4076 4137 4096 3729 3731 3736 3740 3743 3749 3754 3760 3768 3773 3777 3785 3789 3795 3801 3805 3811 3816 3819 3828 4591 4597 4599 4604 4606 4611 4614 4618 4622 4629 4442 4445 4447 ...

duff co valves class 300 valves 300 psi saturated steam 600 psi non-shock cold water oil or gas bronze gate glove and check valves gate size fig no price globe fig no price swing check fig no price needle globe 200psi fig no price 1/8 1/4 3/8 1/2 3/4 1 1 1/4 1 1/2 2 2 1/2 3 3834 3844 3848 3851 3852 4127 4128 3961 4500 4509 4547 4556 4562 4565 4579 4587 4698 4703 4709 4714 4715 4716 4717 4720 4719 4721 4804 4808 4813 4816 4817 pipe markers valve tags valve lockout available in all wording all duff identification products readily available page 14 available numbered ball valves available 3/8 ...

valves ball valves duff co bronze two piece 600 psi full port up to 1 conventional port 1 1/4 to 3 full port available in all sizes 15 swp 600 wog chrome plated ball reinforced tfe seats 1/4 3/8 1/2 3/4 1 1 1/4 1 1/2 2 2 1/2 3 4 sweat fig no 38108 3726 3737 3741 3772 3823 3765 3823 3837 4058 price fig no price thread 3673 3677 3679 3684 3686 3703 3708 3711 3713 3716 3723 bronze two piece with ss ball stem 600 psi full port up to 1 conventional port 1 1/4 to 3 full port available in all sizes 150 swp 600 wog 316ss ball and stem reinforced tfe seats thread fig no price fig no ...

duff co valves conventional port ball valves bronze two piece 600 psi locking handle locking handle protect your employees and yourself sweat fig no price fig no price 1/4 3/8 1/2 3/4 1 1 1/4 1 1/2 2 50570 50571 50572 50573 50574 50575 50576 50577 50578 50579 threaded 50560 50561 50562 50563 50564 50565 50566 50567 50568 50569 bronze three piece full port stainless and carbon steel are always available sweat fig price fig price 1/4 4147 3/8 4148 1/2 4149 3/4 4150 1 1 1/4 1 1/2 2 4152 4154 4156 4159 2 1/2 4161 thread 4133 4135 4138 4140 4141 4142 4143 4144 4145 flanged cast ...

valves bronze three way ball valve duff co ball valves class 150 and 300 flanged ball valves also available stainless or carbon steel sweat fig no price 50470 50471 50472 50473 50474 50475 50476 50477 50478 50479 threaded fig no price 4175 4176 4177 4178 4179 4180 4182 4186 4187 4188 size 1/4 3/8 1/2 3/4 1 1 1/4 1 1/2 2 2 1/2 3 stainless steel bronze carbon steel sizes through 12 actuated ball valves this full port three way ball valve is the ideal choice fluid systems requiring minimum pressure loss and diverter operation use for water oil or gas up to 400 psi replaces 2 ball valves and a ...

duff co valves every option not available for every valve ball valve options grounded stem ground washer stainless steel washer used for grounding the lever and stem to the body of the valve to prevent the build-up of static electric charge round handle safety handle resistant to accidental operation tee handle compact handle ideally suitable where space is a problem for safety reasons oval handle low profile used in lieu of lever handles for safety also visually indicates open or closed positions extension is 1 stainless steel handle nut for use on bronze and carbon steel ball valves where ...

valves full port gas rated ball valve duff co gas cocks aga gas valve 1/2 3/4 1/2 3 size 1/2 3/4 1 1 1/4 1 1/2 2 2 1/2 3 fig no 41975 41976 47873 6349 6352 49737 50788 50789 price fig no 50802 50803 price duff company 201 east lafayette street norristown pa 19401 610 275-4453 fax 610 279-6299 spring loaded in-line check valve rated 250 psig wog 125 swp with teflon disc for horizontal or vertical installation size 3/8 1/2 3/4 1 1 1/4 1 1/2 2 for additional information call 610-275-4453 or fax 610-279-6299 please call for current prices threaded fig no price 6034 6035 6046 6038 6040 6042 6069 ...

duff co valves floats float and fill valves single spud round float float diameter tapping copper for standard service stainless steel type 304 standard for corrosive and non-corrosive fluids to 800 degrees f and 150 psi fig no 3 4 5 6 7 8 10 12 1/4-20 sae 1/4-20 sae 1/4-20 sae 1/4-20 sae 3/8 f.i.p 3/8 f.i.p 3/8 f.i.p 3/8 f.i.p 4937 4938 4942 4944 4945 4946 4962 4969 price fig no 4974 4978 4981 4991 5004 5011 5014 5015 price brass automatic fill valve float rod 1/4 x 20 sae size 8 9 10 12 fig no 15056 15057 15058 15059 price sizes 3/8 to 1 threaded inlet and outlet size 3/8 1/2 3/4 1 1 1/4 ...

valves brass industrialicfloat valves appl ation duff co float valves are recommended for controlling a constant level in storage tanks reservoirs cooling towers filtering plants and in all types of industries such as paper mills packing plants chemical plants steel mills textile mills laundries breweries etc operation the standard operation is where a fall in liquid level will open the valve and a rise in the level will close the valve however by reversing the linkage the opposite of the above operation will occur direct float valve for open tank service angle type shown globe straight-through ...

duff co valves lever valve float adapters all sizes available other standard float balls more float lever valves flanged float valve sizes through 8 available in globe or angle pattern float mechanism for operating all lever valves steam float valve sizes 1/2 to 6 float box for use in connection with closed tanks page 22 typical options applications open or closed storage floats all materials sizes tanks and connections vats float rods brass stainless process tanks steel or galvanized pipe cooling towers swivel adapter vertical basins operation of float rod standpipes replaces rosette and ...

valves quick opening gate duff co molasses gate size 3/8 1/2 3/4 1 1 1/4 1 1/2 2 2 1/2 3 4 fig no 5310 5311 5312 5314 5315 5317 5318 5319 5321 5322 price size 3/4 1 1 1/4 1 1/2 2 3 4 fig no 5241 5243 5244 5245 5246 5248 5249 price face to face dimensions offlangedi ro n va lv e s gate valves and ball valves size 2 2 1/2 3 4 5 6 8 10 12 14 16 18 20 24 globe and swing check valves 125 lbs 8 8 1/2 9 1/2 11 1/2 13 14 19 1/2 24 1 27 1/2 31 27 1/2 30 1/2 32 1/2 angle valves centre to face 125 lbs 4 4 1/2 4 3/4 5 3/4 6 1/2 7 125 lbs 7 7 1/2 8 9 10 10 1/2 11 1/2 13 14 15 16 17 18 20 250 lbs 8 1/2 9 1/2 ...

duff co valves class 125 iron body bronze mounted gate globe and check valves size flanged gate valve rising stem fig no price flanged flanged flanged check valve gate valve globe valve globe valve non-rising straight angle stem flanged fig no price 2 2 1/2 3 4 5 6 8 4819 4823 4824 4831 4836 4840 4842 e ediat imm e for y abl er avail deliv 4846 4851 4855 4858 4861 4867 4869 all flanged gates globes and checks available in 250 sb 500 wog ratings call for immediate delivery all iron gate globe and check valves size 2 2 1/2 3 4 fig no price 18348 18349 18351 18352 available for immediate delivery ...

valves non-return stop check valves duff co silent check valves y-pattern straight angle size 2 2 1/2 3 4 5 6 8 10 fig no 44434 44435 44436 44437 44438 44439 44440 44441 price sizes 3 to 10 these valves are recommended as a check valve on each boiler in a multiple unit plant foot valves use only with flat face flange and full-face gasket silent check valves 125 wog ideal for when check valve is located on discharge size of pump results in a safe and silent piping system 1/2 through 30 for positive prime with silent operation full flow area positive shut-off at all ranges silent operation more ...

duff co operating life pressure drop valves butterfly valves butterfly valves can operate for more than 10,000 cycles and still provide bubble tight shut off there are not many valves that can take that kind of punishment energy costs go up with excessive pressure drop prevalent point to keep in mind the valve or valves are but one factor in a piping system that contribute to pressure drop of equal concern are these factors flow area of piping friction loss against pipe walls change of flow direction via fittings butterfly valve have flow characteristics three times better than globe valves ...

valves butterfly valves duff co wafer type with lever operator size 2 1/2 3 4 5 6 8 fig no 5283 5284 5289 5290 5292 5293 price lug type with lever operator size 2 1/2 3 4 5 6 8 fig no 5294 5296 5297 5299 5300 5303 price caution 1 class 250 cast iron and class 300 steel flanges can not be used on these valve 2 rubber faced or mechanical flanges are not recommended 3 this valve is not recommended for steam service 4 valves should not be assembled to the flanges and then welded into the piping system 5 lever-lock handles are not recommended for use on 8 and larger valves for additional information ...

valves solenoid valves for industrial applications coil assembly with junction box standard other housing available class f coil ul listed csa certified long life continuous duty totally encapsulated impervious to water dust and most corrosive fluids spring loaded stainless steel plunger for corrosion-free operation design permits wide choice of operating positions attractor with copper shading bends for quiet operation silver with stainless steel valves duff co pilot orifice diaphragm operation for lower pressure drop better energy savings greater tolerance of materials choice of diaphragm materials ...

valves operational sequence pilot operated normallyclosed to open when the solenoid receives an electrical signal a magnetic field is formed which attracts the plunger the plunger covering the pilot orifice lifts off causing system pressure holding the diaphragm closed to drop as system pressure on top of the diaphragm is reduced full system pressure on the opposite side of the diaphragm acts to lift the diaphragm away from the main orifice thus allowing full media flow through the valve since the bleed orifice is dimensionally small that th pilot orifice system pressure cannot rebuild on top ...

duff co valves solenoid valves 1/4 to 1 minimum pressure 1 lbs maximum pressure 150 lbs maximum temp 225o f 1 1/4 to 1 1/2 minimum pressure 5 lbs maximum pressure 125 lbs maximum temp 180o f 2 to 3 minimum pressure 2 lbs maximum pressure 125 lbs maximum temp 180o f normally closed valves valve only size 1/4 3/8 1/2 3/4 1 1 1/4 1 1/2 2 3 fig no 38741 38742 38743 38744 38745 38746 41399 38748 38750 price valve with 24 volt coil fig no price 45197 45200 45206 45209 45212 45230 45233 45215 45221 valve with 110120 volt coil fig no price 45195 45198 45201 45207 45210 45222 45231 45213 45219 ...

valves solenoid valves steam solenoid valves maximum steam pressure 50psig minimum pressure 1 lb maximum pressure 50 lb maximum temperature 360of duff co steam solenoid valves normally closed valve only size 1/4 3/8 1/2 3/4 1 fig no 38751 38752 38753 38754 38755 price valve with 24 volt coil fig no price 45235 45239 45242 45245 45248 valve with 110120 volt coil fig no price 45236 45237 45240 45243 45246 valve with 220 volt coil fig no price 45234 45238 45241 45244 45247 three-way solenoid normally closed size 1/2 fig no 49058 price other sizes available coils voltage 24 110-120 208-240 fig no ...

duff co valves lubricated plug valves straightway threaded valve wrench size 1 1 1/4 1 1/2 2 2 1/2 3 4 5 6 fig no 5086 5087 5090 5091 5092 5093 5094 price fig no 5105 5106 5106 5106 5104 5104 5107 price flanged valve valve wrench fig no 5095 5096 5097 5098 5099 5100 5101 5102 5103 price fig no 5105 5106 5106 5106 5104 5104 5107 5108 5108 price other pattern plug valves plug valve lubricant available all valves ball gate globe and check can be cleaned for oxygen service page 32 for additional information call 610-275-4453 or fax 610-279-6299 please call for current prices.

valves diaphragm valves viscous fluids abrasives fibrous slurries sludges suspended solids duff co with no metal to metal contact only the gasket comes in contact with fluid pass through hundreds of combinations of body material linings end connections and types combined with diaphragm selection and modes of operation add up to thousands of possible combinations while eliminating any metal to metal contacts flanged plastic lined lining material pvc saran polypropylene tefzel kynar neoprene #7 soft rubber #5 hard rubber #10 butyl #16 hypalon #9 soft gum rubber #11 #s471 glass cast iron xxxx ductile ...

duff co valves quick opening boiler valves size 3/4 1 1 1/4 1 1/2 2 2 1/2 fig no 17601 5263 5264 5266 5268 5270 price how figure 4000 series operates line pressure and heavy spring hold disc firmly against the body seat sealing off the flow when operated the disc slides across the body seat pushing harmful boiler scale away and wiping clean the precision lapped surfaces hand adjustment of the post packing is eliminated post packing is self-adjusted by a spring and line pressure this prevents destructive erosion or leakage of stuffing box features straight through flow leak proof seal disc has self ...

additional fire protection 1 1/2 83690 pages 143-148 2 1/2 83692 for additional ...

duff co valves forged steel valves page 36 for additional information call 610-275-4453 or fax 610-279-6299 please call for current prices.

valves forged steel valves duff co os&y gates threaded and socket weld ends 800 psi 850 degrees f welded bonnet os&y globe integrally forged flanged ends class 300 and 600 bolted bonnet os&y globes threaded and socket weld ends class 800 bolted bonnet os&y gates class 800 threaded socket weld and female threaded for socket weld ends bolted bonnet size 1/4 3/8 1/2 3/4 1 1 1/4 1 1/2 2 fig no 5271 5273 5274 5276 5277 5279 5280 5281 price lift check threaded and socket weld ends class 800 bolted cover os&y gates class 150 300 600 ball valves with tfe seats and packing adjustable packing box integrally ...

duff co valves stainless steel valves choose from our full line of high quality valves to meet your needs size fig no price 1/2 3/4 1 1 1/4 1 1/2 2 2 1/2 3 5250 5252 5254 5255 5256 5257 58964 61785 yes we accept visa and mastercard page 38 for additional information call 610-275-4453 or fax 610-279-6299 please call for current prices since 50 years of service over 1947

valves iron body awwa valves duff co awwa inside screw non-rising stem bronze trim solid wedges o-ring gland square operating nut conforms to awwa specifications and has identifying awwa cast on bonnet generally recommended for shutoff on water lines 200 psi water 4 12 175 psi 14 150 psi 16 20 type of ends tyton 4 12 flanged x mechanical joint 4 12 mechanical joint 4 20 flanged x tyton 4 12 flanged x ring tite 4 12 awwa inside screw non-rising stem bronze trim solid wedges wheel operated this valve contained flanged ends sizes up to 20 fitted with o-ring gland larger sizes have conventional ...

duff co gate valve steel stainless steel and aluminum valves valves for today s modern tanks api bottom loading adapter flanged emergency valve steel and stainless steel monarch air check valve delmar emergency valve aluminum universal emergency valve operator mounting brackets pneumatic actuators valve actuators pneumatic actuators electric actuator mounting brackets mounting brackets and couplings are available in a wide variety of configurations to suit specific applications many basic models air to close air to open many basic models brushless induction spring to close air to close spring ...

valves add-a-valve duff co add a valve with out shutting off the water in 30 seconds or less designed for use on l&k type copper tubing on cold water systems only add-a-valve is not recommended for type m or thinner wall copper tubing and carries absolutely no guarantee to install the add-a-valve under pressure on l or k type copper tubing without shutting off the water simply disassemble the add-a-valve body by removing the 4 ss316 allen screws brush a thin coat of jomar seal wog hard set thread sealant on the inner surface of both add-a-valve cavities the width of both valve bodies and allow ...

duff co valves cast steel valves class 150 gate o.s y bolted bonnet flexible and solid wedge class 150 globe o.s y bolted bonnet class 150 swing check bolted cover class 150 ball valve twin seal tfe seats cryogenic valves fax your order 610-275-4453 gate globe and check valves threaded and flanged in bronze and stainless duff delivers page 42 for additional information call 610-275-4453 or fax 610-279-6299 please call for current prices.