©Johnstone Supply eCatalog 216

COMMERCIAL CONTROLS Pneumatics

RL 243 SW Switching Relay • The RL 243 SW switching relay is a compact, three-way air valve for switching and diverting functions • Changeover pressure is adjustable via an adjustment screw at the top of the relay

• Switching action connects a common port to either of two other ports • Port connections are 1/8" -27 NPT female thread • Changeover diff. PSI 1.5

Each

Order # Mfg. #

Spring Range

Max. Pressure

L37-994 243-0001

0 to 25 Adj. PSI

30

545.00

RL 243 H Highest Pressure Signal Selector Relay • Dual input, single output logic device that compares two input signals and transmits the higher of the two to the output port

• Port connections are for 1/4" poly tubing

Each

Order # Mfg. #

Spring Range

Max. Pressure

Air Capacity 130 SCIM

L37-995 243-0018

None

30

255.00

RL 243 L Lowest Pressure Signal Selector Relay • Dual input, single output logic device that compares two input signals and transmits the lower of the two to the output port

• Used as a direct acting amplifying relay or to control a single fan heating control from two direct acting relay type room thermostats • Port connections are for 1/4" poly tubing

Each

Order # Mfg. #

Spring Range

Max. Pressure

Air Capacity

Air Consumption

L37-996 243-0020

None

30

82 SCIM

29 SCIM

165.00

RL 243 R Reverse Acting Relay • Provides a proportional output signal that varies inversely with the input signal • Two applications, signal reversing and signal inverting

• Both applications require that the supply air pressure must be equal or greater than the adjustable spring setting • Port connections are barbed for 1/4" O.D. poly tubing

Each

Order # Mfg. #

Spring Range

Max. Pressure

Air Capacity 230 SCIM

Air Consumption

L37-997 243-0024 0 to 30 Adj. PSI

30

29 SCIM

445.00

RL 243 LH Lowest and Highest Signal Selector Relay • Used where up to six pneumatic input signals are

• This is a low capacity output device, therefore, an amplifying relay may be required in many applications

compared and the lowest and/or highest input signal is output to another logic or control device • All port connections are barbed for 1/4" O.D. poly tubing

Each

Order # Mfg. #

Max. Pressure

Input Signal

Action Direct

Air Capacity

Air Consumption

L37-998 243-0019 0 to 30 PSI

0 to 20

230 SCIM-29 SCIM 30

709.00

Valve Linkage Kits • For use with SKB, SKC, SKD, and SAX Actuators • Easy installation • High force with output forces up to 1,000 pounds

• Built-in manual override — no tools required

Each

Each

Order # Mfg. #

Description

Valve Type

Order # Mfg. # L49-080 ARK18

Description

Valve Type

L49-076 L49-077 L49-078 L49-079

ARK13 ARK14 ARK16 ARK17

Valve Linkage Kit Valve Linkage Kit Valve Linkage Kit Valve Linkage Kit

Globe Globe Globe Globe

339.00 339.00 339.00 339.00

Valve Linkage Kit Valve Linkage Kit

Globe Globe Globe

339.00 339.00 339.00

L49-081

ARK19

L49-082 ARK21 Valve Linkage Kit

424

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