Catalog: Valves
Company/Brand: Duff Company
on off valve in Valves by Duff Company
valves wall hydrant encased non-freeze a flush ... washer guide when the hydrant is turned on positions o rings to seal off drain ... port when hydrant is turned off the washer guide moves down clearing ... polyethylene construction two sizes offered 3/4 npt and 2 npt for use with steel ... and polyethylene drums instant on off control provides smooth fast flow with ... in all climactic conditions nylon valve and tempered coil spring can be ...
valves valve installation tips duff co soldering and ... 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 ... wire or rod at point where tube enters valve socket keep flame away from rod or wire ... into space between tube outer wall and valve socket when joint is filled a ... cut to leaving a fillet around end of valve as it cools bright metal steel wool is ... the outside of the tube 4 be sure that valve is fully open apply heat to tube first ... transfer as and the valve socket the interior dimensions of ... silver brazing valve much heat as possible through tube into ...
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 ... 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 ... 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 ... for safety reasons in the open or on position figure 2 the valves provide ... service to the downstream side of the valve for additional information call 610-275 ...
duff co valves every option not available for every ... valve ball valve options grounded stem ground washer ... the lever and stem to the body of the valve to prevent the build-up of static ... 1 stainless steel handle nut for use on bronze and carbon steel ball valves ... the atmosphere is corrosive standard on s8000/s8500 series stain less steel ... valves extended handle for insulated pipe in ... extension is 3 latch-lok handle only this patented option pro vides the ... to latch as well as lock the ball valve in both the on or off position ideal ... hose connections for positive shut-off oval handle high profile used on ... plate for any throttling or semiopen valve requirements such as in the balancing ...
valves non-return stop check valves duff co silent check valves y-pattern ... 44440 44441 price sizes 3 to 10 these valves are recommended as a check valve on ... 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 ... operation full flow area positive shut-off at all ranges silent operation more ... foot valves in pump section globe style twin disc ... not be used as steam valve or for any air service install 3 to 4 ...
duff co operating life pressure drop valves butterfly valves butterfly valves can ... and still provide bubble tight shut off there are not many valves that can take ... prevalent point to keep in mind the valve or valves are but one factor in a ... flow direction via fittings butterfly valve have flow characteristics three times ... better than globe valves and approximately 75 of an equivalent ... size gate valve butterfly valves can used for on/off service and ... as compared to a gate or globe valve butterfly valves have a wider range of ... saved with lightweight butterfly valves as compared to heavyweight cast iron ... valves ie a 10 butterfly valve may weigh 490 pounds this can be an ... so by considering the weight of a valve one can also reduce piping costs ...
valves solenoid valves for industrial applications coil ... operation silver with stainless steel valves duff co pilot orifice diaphragm ... permits use of small less expensive valves solenoid valves are electrically ... devices used to control flow the valve is used for the remote on/off or ... of liquids gases and steam solenoid valves do not regulate flow jackes evans ... operation solenoid valves consist of two main elements 1 an ... electrical coil the solenoid and 2 a valve body or pressure vessel the solenoid is ... that powers acts to open or close the valve the valve is the pressure containing ... unit that acts to shut off or open media flow when the solenoid is ... attracts a moveable plunger in the valve physical movement of the plunger opens ...
valves operational sequence pilot operated ... covering the pilot orifice lifts off causing system pressure holding the ... closed to drop as system pressure on top of the diaphragm is reduced full ... system pressure on the opposite side of the diaphragm acts ... allowing full media flow through the valve since the bleed orifice is ... orifice system pressure cannot rebuild on top of the diaphragm as long as the ... is de-energized it releases its hold on the plunger the plunger drops and ... and stops media flow through the valve duff co types of solenoid-pilot ... normally open in a normally-open valve the sequence of operation is reversed ... from that of a normally closed valve the main orifice is open when the ... is de-energized it releases its hold on the plunger the plunger uncovers the ...
duff co valves quick opening boiler valves size 3/4 1 1 1/4 1 1/2 2 2 1/2 fig no ... firmly against the body seat sealing off the flow when operated the disc slides ... wiping action of disc cannot hang up on boiler scale slow opening valves meet ... asme/ansi codes slow opening valves meet asme/ansi codes sectional view of ... angle and y valve features valve can be installed with hand wheel in any ... -disc has wiping action cannot hang-up on boiler scale no retightening after cool ... seat 700 bhnresists erosion how this valve operates line pressure and heavy spring ... firmly against the body seat sealing off the flow when operated the disc slides ... or leakage of stuffing box how this valve operates these valves are of the ... blow-down service while quick opening valve holds boiler water the seat and disc ...
valves blow off valves duff co angle valve flange iron bodyron bod steel body ... angle valve screwed iron body steel body ... straightway valve screwed iron body steel body ... straightway valve flanged iron body steel body 175 lb wwp ... city board of standards fire protection valves 175 lb wwp iron body gate flanged ul/ ... 2 automatic ball drip for installation on dcf908w closes against pressure opens ... when pressure is off allowing water to drain from the fire ... 279-6299 please call for current prices valves see page 35 ...
valves iron body awwa valves duff co awwa inside screw non-rising ... and has identifying awwa cast on bonnet generally recommended for ... shutoff on water lines 200 psi water 4 12 175 psi ... trim solid wedges wheel operated this valve contained flanged ends sizes up to 20 ... 24 48 iron body awwa butterfly valves these butterfly valves are manufactured ... surface to endure bubble-tight shut-off on pressures to a maximum rating of 250 ...
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 ... 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 ... 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 to dry for three ... minutes then assemble the add-a-valve around the copper tubing reinsert the 4 ... in an x pattern to align the add-a-valve body evenly on the copper tubing use a ... 3.9 manual ratchet type socket wrench on the 1/2 3/4 and 1 sizes and a 9/16 ...
