Issue link: https://onenorgren.uberflip.com/i/561446
4 AIR PREPARATION PRODUCTS APP-118 For further information www.norgren.com R91W: Use with deionized water and potable water systems. Plastic (not assembly) is NSF approved. All elastomers are CFR 21 FDA food and water contact compliant. Non relieving models only. R91G: Use with non-potable water (non-relieving only) and compressed air systems (Non relieving and relieving models.) Ordering information Models listed include PTF threads, knob adjustment, non relieving diaphragm, 5 to 125 psig (0.3 to 8.6 bar) outlet pressure adjustment range†, and without gauge. ISO Symbols Inlet Port Application Model Flow* scfm (dm3/s) Flow** gpm (lpm) Weight lb (kg) 1/4" Industrial air and non-potable water R91G-2AK-NLN 24 (11) 1.75 (6.6) 0.15 (0.07 1/4" Potable water and deionized water R91W-2AK-NLN 24 (11) 1.75 (6.6) 0.15 (0.07) * Typical flow for compressed air service at 150 psig (10 bar) inlet pressure, 90 psig (6.3 bar) set pressure and a droop of 15 psig (1 bar) from set. ** Typical flow for water service at 100 psig (7 bar) inlet pressure, 60 psig (4 bar) set pressure and a droop of 15 psig (1 bar) from set. Relieving Non relieving R91 Water or Compressed Air Pressure Regulator Regulator 1/4" Port Size Fluid R91G: Compressed air and non- potable water, neutral gases NOTE: Contact technical support for use with other media. R91W: Potable water, deionized water Maximum pressure: 150 psig (10 bar) Operating temperature Water service: 35° to 125°F (2° to 52°C) Air service: 0° to 125°F (-20° to 52°C)* * When used in air service, air supply must be dry enough to avoid ice formation at temperatures below 35°F (2°C). Gauge ports: 1/8 PTF with PTF main ports R1/8 with ISO G main ports Materials Body and bonnet: acetal Valve R91G: brass, nitrile R91W: stainless steel/food grade EPDM Valve seat: acetal Valve seat o-ring R91G: nitrile R91W: Food grade EPDM Diaphragm R91G: acetal, nylon inserted nitrile R91W: acetal, nylon inserted nitrile, food grade Gauge port plugs: nylon Technical data R 9 1H 2 A K HH N Alternative Models Application Substitute Industrial air, non-potable water G Potable water, deionized water W Outlet Pressure Adjustment Range Substitute 1 to 10 psig (0.1 to 0.7 bar) E 5 to 50 psig (0.3 to 3.5 bar) L Diaphragm Substitute Non relieving N Relieving R