Skip to product information
Usually ships in 2–4 business days.
120030904 Pressure Switch Valve for Carrier Supra 1950MT 1850MT 1850 1800
$37.19
Sale price
$37.19
Regular price
Available to Order
This Pressure Switch Valve is a replacement pressure switch valve compatible with Carrier Supra models 1950MT, 1850MT, 1850, 1800 and matches OEM Part# 12-00309-04.
Need help finding the right part? Talk with a parts expert today.
Parts Support Hours: Monday–Friday, 8:00 AM–5:00 PM CT
Live Chat: Available 24/7
I needed a forklift part and wasn’t sure which one fit. They asked for the model and serial number, got back to me quickly, and made sure I ordered the right one. Really helpful.
Randy W. — Verified customer
Product Overview
The pressure switch valve 12-00309-04 is a critical component for Carrier Supra transport refrigeration units. It controls refrigerant pressure to ensure efficient cooling operation, making it essential for maintaining proper temperature in cargo trailers equipped with these units.
Key Features & Performance
- Direct OEM replacement with part number 12-00309-04
- Precise pressure activation thresholds for reliable system cycling
- Rugged construction designed for heavy-duty transport environments
- Easy installation using existing mounting and electrical connections
- Helps prevent compressor damage from improper pressure levels
Fitment & Compatibility
- Carrier Supra 1950MT
- Carrier Supra 1850MT
- Carrier Supra 1850
- Carrier Supra 1800
Common Uses
- Replacing a failed pressure switch in Carrier Supra refrigeration systems
- Restoring proper cooling cycle operation in refrigerated trailers
- Used during routine service of truck and trailer reefer units
- Repairing pressure-related faults such as short cycling
Technical Specifications
- Part Number(s): 12-00309-04
- Type: Pressure switch valve
- Application: Carrier Supra transport refrigeration
Frequently Asked Questions
Q: Is this switch compatible with Carrier Supra 1950MT? A: Yes, it is listed for 1950MT as well as 1850MT, 1850, and 1800 models.
Q: Can I install this myself? A: Installation requires basic mechanical and electrical skills, but we recommend professional service for refrigerant handling.
Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number. Verify fitment before purchase.