Norgren R43 User Manual

See Section ALE-24 for Accessories

Littleton, CO USA Phone [phone] www.norgren.com

ALE-5-10

R43

● Non-relieving models

● Brass body, corrosion resistant construction

● Balanced valve minimizes effects of inlet pressure

variations on outlet pressure

● T-bar adjustment standard,nonrising knob

adjustment optional

● Full flow gauge ports can be used as auxiliary outlets

● Panel mounting nut standard

● Can be disassembled without the use of tools or

removal from the air or water line.

Water and Compressed Air Service Pressure

Regulator 1/4", 3/8" and 1/2" Port Sizes

ISO Symbols

Non relieving

Alternative Models

4R 3

★ ★ ★ ★★

-

★ ★

-

Port Size Substitute
1/4" 2
3/8" 3
1/2" 4

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
15 to 250 psig (1 to 17 bar) S

Gauges Substitute
With G
Without N

Diaphragm Substitute
Non relieving N

Adjustment Substitute
Knob 00
T-handle with 1/4" and 3/8" ports 01
T-handle with 1/2" ports 06

Ordering Information

.

Models listed have T-handle adjustment, 5 to 125 psig (0.3 to 8.5 bar) outlet pressure adjustment range*, and PTF

threads. A gauge is not included.

Port Model Flow†U.S. gpm (lpm) Weight lb (kg)
1/4" R43-201-NNLA 6 (23) 2.4 (1.09)
3/8" R43-301-NNLA 6 (23) 2.4 (1.09)
1/2" R43-406-NNLA 9 (34) 2.4 (1.09)

Threads Substitute
PTF A
ISO Rc taper B
ISO G parallel G

* Outlet pressure can be adjusted to pressures in e xcess of, and less than, those
specified. Do not use these units to control pressures outside of the specified
ranges.

† Typical flow with 150 psig (10 bar) inlet pressure, 90 psig (6.3 bar) set pressure
and 15 psig (1 bar) droop from set.

R43 Special Purpose Regulators

ALE-5-11

All Dimensions in Inches (mm)

Littleton, CO USA Phone [phone] www.norgren.com

Technical Data

Fluid: Water and compressed air
Maximum pressure: 400 psig (27 bar)
Operating temperature:

Water service: 35° to 200°F (2° to 93°C)
Air service: -30° to 200°F (-34° to 93°C) *

* Air supply must be dry enough to avoid ice formation at temperatures below 35°F (2°C).

Typical flow for water service at 150 psig (10.3 bar) inlet pressure, 60 psig (4 bar)

set pressure and a droop of less than 5 psig (0.35 bar) from set:

1/4", 3/8" Ports: 6 U.S.gpm (22 liters per minute)
1/2" Ports: 9 U.S.gpm (45 liters per minute)

Gauge ports

1/4" PTF with PTF main ports
1/4" ISO G with ISO G main ports
1/4" ISO Rc with ISO Rc main ports

Materials:

Body: Brass
Bonnet: Aluminum
Valve: Brass
Bottom plug: Brass
Elastomers: Nitrile

PORT SIZE: 1/4"
SPRING RANGE: 5 to 125 psig (0.3 to 8.6 bar)
INLET PRESSURE: 150 psig (10.3 bar)

WATER FLOW CHARACTERISTICS

0 4 8 12 16 20 litres/min

WATER FLOW

0 1 2 3 4 5 US gal./min

OUTLET PRESSURE

8

6

4

2

0

bar

100

80

60

40

20

0

psig

Typical Performance Characteristics

A

B

C

E

F

F

A

B

D

E

Panel mounting hole diameter: 1.89" (48 mm)
Maximum panel thickness:0.19" (5 mm)

Port Size A B C D E F
1/4", 3/8" 2.76 1.52 4.86 5.75 1.21 2.31

(70) (39) (124) (146) (31) (59)

1/2" 3.34 1.59 5.01 5.90 1.28 2.44

(85) (41) (127) (150) (33) (62)

Service Kits

Item Type Part number
Service kit

For 1/4" and 3/8" ported units 5298-03
For 1/2" ported units 5298-10

Service kit includes diaphragm, o-rings, valve, valve spring.

bar

psig

8

100

6

80

PORT SIZE: 1/2"
SPRING RANGE: 5 to 125 psig (0.3 to 8.6 bar)
INLET PRESSURE: 150 psig (10.3 bar)

60

4

OUTLET PRESSURE

40

2

20

WATER FLOW CHARACTERISTICS

0

0

0 2 4 6 8 10 US gal./min
0 8 16 24 32 40 litres/min

WATER FLOW