4 - ShanControls

Series N55B (1 1 ⁄4" – 2")Water Pressure Reducing Valve• Bronze body construction• Ideal for residential and commercial applications• Sealed spring cage on all models for waterworks pit installations• Water savings up to 30%* (see page 11)Specifications• Temperature Range: 33˚F – 180˚F (5˚C – 82˚C)• Maximum Working Pressure: 300psi (21 bars)• Adjustable Reduced Pressure Range: 25 – 75psi (172 – 517 kPa)• Standard Reduced Pressure Setting: 50psi (345 kPa)StandardsMeets requirements of ASSE Standard 1003 (ANSI A112.26.2); CSA Standard B356;and listed by IAPMO.ModelsN55BDU Double Union – NPT threaded union female inlet and outletN55BDU-S Double Union – Solder union inlet and outletOptionsadd Suffix:G Gauge tappingGG Gauge tapping and 160psi (11 bar) gaugeFor additional information, request literature ES-N55B-L.**Bypass will not work if inlet pressure is above 150psi (10.34 bars)N55BDUFeatures• Bronze cage• Double union inlet & outlet connections• Integral stainless steel strainer• Thermoplastic seat• Bronze body construction• Serviceable in line• Bypass feature controls thermalexpansion pressure**• Sealed spring cage on all models forwaterworks pit installations1Pressure Regulators & Automatic Control ValvesBCDAMODEL SIZE (DN) DIMENSIONS (APPROX.) WEIGHTA B C Din. mm in. mm in. mm in. mm in. mm lbs. kg.N55BDU 1 1 ⁄4 32 8 3 ⁄8 213 10 5 ⁄16 262 8 7 ⁄8 225 1 7 ⁄16 36 2.5 1.1N55BDU 1 1 ⁄2 40 8 3 ⁄8 213 10 1 ⁄2 267 8 7 ⁄8 225 1 5 ⁄8 41 2.5 1.1N55BDU 2 50 9 228 12 9 ⁄16 319 8 7 ⁄8 225 1 7 ⁄8 47 3 1.4N55BDU-S 1 1 ⁄4 32 7 15 ⁄16 201 10 5 ⁄16 262 8 7 ⁄8 225 1 7 ⁄16 36 2.5 1.1N55BDU-S 1 1 ⁄2 40 8 3 ⁄16 207 10 1 ⁄2 267 8 7 ⁄8 225 1 5 ⁄8 41 2.5 1.1N55BDU-S 2 50 9 1 ⁄4 235 12 9 ⁄16 319 8 7 ⁄8 225 1 7 ⁄8 47 3 1.4* Water Savings: A water savings test program concluded that reducing the water supply pressure from 80psi to 50psi(551.2 – 344.8 kPa) resulted in a water savings of 30%. For additional information on conserving water and energy, requestour F-23QA brochure – “23 Questions and Answers About Water Pressure Reducing Valves”.For assistance, contact your local authorized Watts agent or visit our website at www.wattsreg.com11