Catalog: Duff Company Catalog | |
| -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 ... 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 ... the copper tubing reinsert the 4 allen screws and tighten evenly in an x pattern to ... align the add-a-valve body evenly on the copper tubing use a 3.9 ... | |
| watts relief valves heating watts 374a special pressure hot water boiler relief valve ... valve calibrated adjustment feature for setting valve to relief pressure adjustable ... 50-175 lbs all brass construction and stainless steel spring ideally suited as by-pass ... no 3774 price watts 100xl asme rated self-closing t&p relief valve for water heaters up ... female outlet pressure range 75-150 lbs standard setting 150 lbs temperature relief ... 210of thermostats with special protective coating all bronze body ... stainless steel spring thermostat is accurate and proven ... t let this happen to you model fig no size height less thermostat 1 7/8 width ... | |
| 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 ... /hr female inlet and outlet connections sizes 3/4 to 2 meets military spec mil-v- ... 136-12d type iii setting and relieving capacities national board ... certified ratings btu stemam discharge capacities size 30 lbs 100 ... 1 1 1/4 37420 1 1/2 37423 37426 2 size 50 psi fig price no 42487 42490 42493 ... price no 37416 37419 37422 37425 37428 special set fig no 3826 3830 3835 3838 3840 ... price watts 740 iron body safety relief valves with expanded outlets for ... hot water space heating boilers pressure range 3-75 lbs ... | |
| cut-off combination closed heating system steam boil eliminates need for ... connections model 21 ers up to 5000 sf model 47-2 #8840 for steam and hot ... make-up water feeder for low pressure steam boilers float operated integral ... strainer monel seat maximum water supply pressure 100psig maximum boiler ... cut-off combination for higher pressure service up to 75 lbs for steam and hot water ... low water fuel cut-off for low pressure steam boilers for quick hook-up in gauge ... pipe installation on low pressure steam boilers model 61 test-n-check valves ... fuel cut-off for installation boilers simplifies asme csd 1-a codes mandated testing of ... | |
