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- The NK300S is a (re)filling combination valve that contains an integrated pressure reducing valve, strainer, double check backflow preventer with air vent (to protect potable water supply against back flow of heating water into supply pipe), two shut-off ball valves, pressure gauge, and conveniently located test ports for easy inspections and check out. All the needed devices for refilling a heating system are contained.
Resideo Boiler Feed Combination, Fast Fill, 1/2 in Nominal, NPT or C, 10 to 58 psi, 33 to 140 deg F Ambient, 16 gpm, Media: Water, Brass Body, Stainless Steel Trim, Fiber-Reinforced EPDM Diaphragm
- Optimal protection of the potable water supply system
- Outlet pressure adjustable and directly visible on the pressure gaug
- Low maintenance effort - cartridge insert and valve insert are completely replaceable
- Pressure Gauge - 0-60 psi at max temp 140 deg F (60 deg C)
- Multiple solutions integrated into one product provides savings on installation time and material costs
- Test ports located on the inlet, middle, and outlet chambers of the double check backflow preventer
- ntegrated strainer to protect equipment from particles and sediment
- Boiler Fill Shut Off Valve, Double Check Backflow Preventer with Air Vent and Discharge Connection, Valve Cartridge, Integrated 200 micron Strainer, A Check Valve, Pressure Reducing Valve with Valve Insert, Adjustment Spring and Pressure Gauge
- Body MaterialBRASSEnd StyleNPT or CFlow Rate16 gpmNominal Size1/2 inPressure Rating10 to 58 psiManufacturerResideo TechnologiesManufacturer #NK300S-100MediaWaterSoftgoods MaterialFiber-Reinforced EPDM DiaphragmTemperature Rating33 to 140 deg F AmbientTrim MaterialStainless SteelTypeFast Fill