Page 326 of Duff Company Catalog by Duff Company

duff co heating mcdonnel miller make-up water feeder for boiler feeder cut-off combination for receiver tanks direct mounting feeder cut-off combination closed heating system steam boil eliminates need for equalizing larger feeding capacity than connections model 21 ers up to 5000 sf model 47-2 #8840 for steam and hot water fig no price boilers model 51-2 fig no price make-up water feeder for low pressure steam boilers float operated integral strainer monel seat maximum water supply pressure 100psig maximum boiler pressure 25 psig model 25a feeder cut-off combination for higher pressure service up to 75 lbs for steam and hot water model 53-2 8840 20050 fig no price fig no price fig no price 8850 8856 25697 low water fuel cut-off for low pressure steam boilers for quick hook-up in gauge glass tappings model 67 low water fuel cut-off for 1 equalizing pipe installation on low pressure steam boilers model 61 test-n-check valves for hot water low water fuel cut-off for installation boilers simplifies asme csd 1-a codes mandated testing of low low water fuel cut-off for hot in 2 1/2 tapping provided on some water cut offs by eliminating the water space heating boilers up to hot water boilers model 764 need to drain boiler model tc-4 50 lbs pressure model 63 fig no price fig no price fig no price fig no price fig no price 8872 8878 8930 8918 22176 pump control cut-off and alarm for boilers of any size up to 150 psi model 150-s fig no price pump control cut-off and alarm like #8909 but with integral water column type body model 157-s probe type low water cut off modern electronic circuitry to sense the level of a conductive liquid within a vessel mode ps801-u-120v 63833 fig no price fig no price uni-match electronic flow controlled electronic water feeder for sysfueler model wf-2u-120v tems up to 5000 sq ft cap model 101a-120v fig no price 63835 44767 44477 fig no price 8852 flow switches air flow switches for low air velocity systems model af-2 liquid flow switch model fs4-3 fig no nema 4x rated flow switch for general purpose applications with environmental exposure or those requiring a water tight dust tight enclosure model fs8w flow switch for heavy duty service brass or stainless steel construction explosion proof and vandal-proof models pressure to 1000 psi model fs7-4 flow switch combines low-flow responses with large flow-thru capacity max pressure 100 psi model f-s-1 price fig no price 8932 41421 fig no price fig no price fig no price 19553 page 322 35671 8931 call duff first for all your mcdonnel miller requirements for additional information call 610-275-4453 or fax 610-279-6299 please call for current prices.

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