VALVE, CONTROL, (P/N 979990-1) - As Removed

The 979990-1 is a 1.5-inch temperature control valve for aircraft environmental control systems. This valve regulates bleed-air temperature in closed-loop air-mix configurations, maintaining cabin conditioning on pressurized aircraft. Commonly found on ATR 42/72 pneumatic lines, it modulates hot and cold air streams to achieve target cabin temperatures.

Install per the applicable Aircraft Maintenance Manual and Component Maintenance Manual. Verify compatibility with your aircraft's Illustrated Parts Catalog before installation.

What is the VALVE, CONTROL, (P/N 979990-1)?

The 979990-1 is a 1. 5-inch temperature control valve for aircraft environmental control systems.

What hydraulic fluid type is the 979990-1 compatible with?

Hydraulic component compatibility depends on the aircraft system design. Common aviation hydraulic fluids include MIL-PRF-5606 (mineral-based), MIL-PRF-83282 (synthetic), and Skydrol (phosphate ester). Verify the VALVE, CONTROL, against your aircraft maintenance manual for fluid compatibility.

Does the 979990-1 come pressure-tested and certified?

Overhauled and repaired hydraulic components are pressure-tested per manufacturer specifications and include 8130-3 documentation. The VALVE, CONTROL, is available in: As Removed. Contact us for test documentation on your selected condition.

What is the turnaround time for hydraulic component orders?

In-stock hydraulic components ship same business day before 3 PM EST. We provide 24/7 AOG support at (904) 998-9101 for urgent hydraulic system needs. RFQ submissions are typically quoted within 24 hours.