JOHNSON CONTROLS Pneumatic Oil Indicator Cartridge: Mfr Part # A-4000-121
The JOHNSON CONTROLS Pneumatic Oil Indicator Cartridge, part number A-4000-121, is a replacement cartridge for compressed air treatment systems. This component is designed as a direct replacement for models 38Y085…
SKU 3G-OTH-198031
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Product Description
The JOHNSON CONTROLS Pneumatic Oil Indicator Cartridge, part number A-4000-121, is a replacement cartridge for compressed air treatment systems. This component is designed as a direct replacement for models 38Y085 and A-4000-120.
Frequently Asked Questions
What is the JOHNSON CONTROLS A-4000-121 pneumatic oil indicator cartridge used for?
The JOHNSON CONTROLS A-4000-121 is a replacement cartridge used in compressed air treatment systems to indicate oil levels. It is commonly applied in industrial pneumatic circuits, HVAC controls, and plant maintenance where reliable oil monitoring is required to protect downstream equipment.
What are the specifications of the JOHNSON CONTROLS A-4000-121?
The JOHNSON CONTROLS A-4000-121 is a pneumatic oil indicator replacement cartridge. Its manufacturer part number is A-4000-121, and it directly replaces models 38Y085 and A-4000-120. This component is designed for compressed air treatment systems and is identified by SKU 38Y086.
Where to buy the JOHNSON CONTROLS A-4000-121 worldwide?
You can source the JOHNSON CONTROLS A-4000-121 pneumatic oil indicator cartridge through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations, ensuring the part reaches your facility reliably.
How to install the JOHNSON CONTROLS A-4000-121 replacement cartridge?
To install the JOHNSON CONTROLS A-4000-121, first depressurize the compressed air system and remove the old cartridge. Insert the new cartridge securely, ensuring proper alignment with the indicator housing. Re-pressurize and check for leaks. Always follow JOHNSON CONTROLS guidelines for safe installation.
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3G Electric supplies JOHNSON CONTROLS compressed air treatment replacement parts. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.








