Altitude Testing Capabilities at Keystone Compliance
Keystone Compliance operates altitude test chambers capable of simulated altitudes up to 100,000 feet while providing temperature conditioning from -70 to +100 degrees Celsius. Additionally, Keystone Compliance equipment is capable of performing rapid and explosive decompression testing, achieving pressure ramp rates of 10,000 to 40,000 feet in less than 100 milliseconds.
Custom setups for altitude, rapid, and explosive decompression testing are standard procedure for the staff at Keystone Compliance.
Altitude Testing Equipment at Keystone Compliance
Keystone Compliance operates a large state of the art 64 cubic foot altitude chamber. With the addition of slide valves and various pressure vessels, Keystone Compliance is capable of performing rapid and explosive decompression tests. Our altitude chamber is capable of temperature extremes of -70 to +100 degrees Celsius.
Altitude Testing Overview
Altitude testing, also referred to as low-pressure testing, per MIL-STD 810 Method 502.4, is performed to ensure that equipment can withstand and operate in a low-pressure environment. Altitude testing is intended to be used for air shipment of material in a plane, equipment designed for installation at high ground elevations and explosive decompression due to aircraft damage. Low pressure can cause problems such as:
- Leakage of gases or fluids from gasket-sealed enclosures
- Rupture or explosion of sealed containers
- Change in physical and chemical properties of low-density materials
- Erratic operation or malfunction of equipment resulting from arcing or corona
- Overheating of equipment due to reduced heat transfer
- Evaporation of lubricants
- Erratic starting and combustion of engines
- Failure of hermetic seals
Altitude Specifications
MIL-STD 202 Method 105 Barometric Pressure
MIL-STD 750 Method 1001.2 Barometric Pressure
MIL-STD 810 Method 500.4 Low Pressure


