What is an air shut off valve?
Air intake shut off valves provide emergency overspeed shutdown protection for diesel engines and are the most effective way of preventing a runaway situation. The valves completely block the engine air intake system, cutting off an uncontrolled external fuel source and the air required to keep the engine running.
What is a Chalwyn valve?
Chalwyn Valves provide Emergency Over-speed Shutdown Protection for engines in situations where a fuel source can be found in the ambient air. This is an uncontrolled fuel source which provides more fuel to the engine via the air intake, and in turn forces the engine to over-speed.
What is a rig saver?
The Rigsaver air intake shut off valve helps prevent diesel engine overspeed by cutting off the air to the engine. It can be manually or automatically controlled, responding to a variety of fault or hazard conditions.
What are shut off valves used for?
Shut off valves are designed to safely manage compressed air in pneumatic applications, and are used to block compressed air in an industrial automation process, and isolate sub-systems when not in use.
Is a Chalwyn valve a spark arrestor?
Chalwyn Spark Arrestors help mitigate the risk of fire from the ignition of flammable materials caused by spark emission from diesel engine exhaust.
Do diesels have spark arrestors?
Diesel engine spark arrestors are designed specifically to reduce the risk of fire caused by the emission of sparks from the engine exhaust. All diesels, including “clean” engines, create sparks due to the high particulate content of the exhaust gas as a result of the combustion process.
Why do shut off valves leak?
Since cut-off (shut-off) valves are rarely used, the washer inside the valve can become hard or covered with mineral deposits over time. When you close the valve then open it again, the washer on the valve stem may not seat properly, causing it to leak around the valve stem nut.
Do diesel engines need spark arrestors?
Virtually all legislation with regard to operating a diesel engine in a hazardous area includes a mandatory requirement to fit a properly tested and approved exhaust spark arrestor.
How does a shut off valve work on a diesel engine?
Air intake shut off valves provide emergency overspeed shutdown protection for diesel engines and are the most effective way of preventing a runaway situation. The valves completely block the engine air intake system, cutting off an uncontrolled external fuel source and the air required to keep the engine running.
What is an SVH air intake shut off valve?
The SVH air intake Shut-off Valve (also known as ASOV or emergency shutdown valves) has a range of actuation options which means that it can be operated electrically, pneumatically or hydraulically, making it suitable for a wide variety of applications. It is available in 3” and 5” sizes which can be purchased with an integrated flame arrestor.
What is an air on/off valve?
Air-Operated Air On/Off Valves Also known as blocking valves, these valves allow airflow while an air signal is applied to the air pilot. When the signal stops, the valve closes, trapping air in the system. Foot-Operated Air On/Off Valves
How does a flow actuated air intake shut off valve work?
The flow actuated air intake shut off valve requires no external mechanical or electrical input devices. With this system, the valve closes automatically when the speed goes beyond a preset point and opens as soon as your engine is stopped. This simply means that the engine once again is ready to be restarted.