Norgren R91 Series - Manual

See Section ALE-24 for Accessories
ALE-5-6 Littleton, CO USA Phone 303-794-2611 www.norgren.com
R91
● Bonnet and body made from acetal plastic.
● R91W designed for use with deionized water and
potable water systems. Plastics and metals in
contact with fluid are approved by the National
Sanitation Foundation (NSF) or the Food And Drug
Administration (FDA) for use in potable water
systems. Elastomers are food grade. Non relieving
models only.
● R91G designed for use with non-potable water and
compressed air systems. Non relieving and relieving
models.
● Low torque, non-rising adjusting knob.
● Snap action knob locks pressure setting when
pushed down.
● Can be disassembled without the use of tools or
removal from the air or water line.
Water or Compressed Air Pressure
Regulator 1/4" Port Size
Non Relieving Relieving
ISO Symbols
R 9 1 - ★ ★ ★ - ★ ★ ★ ★
Port Size Substitute
1/4 " 2
Threads Substitute
PTF A
ISO Rc taper B
ISO G parallel G
Diaphragm Substitute
Non relieving N
Relieving ¶ R
Gauge Substitute
With G †
Without N
Application Substitute
Industrial air, non-potable water G
Potable water, deionized water W
Adjustment Substitute
Knob K
Alternative Models
Outlet Pressure Adjustment Range†† Substitute
5 to 50 psig (0.3 to 3.5 bar) E
5 to 125 psig (0.3 to 8.6 bar) L
* Approximate flow with 150 psig (10 bar) inlet pressure, 90 psig (6.3 bar) set pressure and a 15 psig (1 bar) droop from set.
** Approximate flow with 100 psig (7 bar) inlet pressure, 60 psig (4 bar) set pressure and a 15 psig (1 bar) droop from set.
† Gauge with NSF approved materials not available.
†† Outlet pressure can be adjusted to pressures in excess of, and less than, those specified. Do not use these units to control pressures outside of the specified ranges.
¶
Relieving diaphragm only available with the R91G regulator.
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.
Inlet Port Application Model Flow* scfm (dm 3 /s) Flow** gpm (lpm) Weight lb (kg)
1/4"
Industrial air and
R91G-2AK-NLN 24 (11) 1.75 (6.6) 0.15 (0.07)
non-potable water
1/4"
Potable water and
R91W-2AK-NLN 24 (11) 1.75 (6.6) 0.15 (0.07)
deionized water