Check & Exhaust Valves

Check and exhaust valves can become worn down, burnt out, or fractured from the natural wear and tear of driving mechanical engines and vehicles. However, the critical nature of check valves and exhaust valves mean they are a necessity in the power, performance and general safety of your vehicle engine. Here at Cromwell, we have an impressive range of exclusive brand check valves and non-return valves that keep gases flowing into and out of your exhaust for optimum engine performance.  

## What are check and exhaust valves?
In the head casting of an engine where the combustion chamber is located, gases need to be able to flow through the passages for the exhaust and the rest of the engine to work at peak performance. check valves are a two-port mechanism that allows fluids and gases to flow into the mechanism and then out. Exhaust valves must be mechanically opened and closed to allow for fluids, fumes and gases from the car hydraulics to flow through freely.

## When are check and exhaust valves used? 
In any engine, engine cylinders must be supplied with air and gases that then need to be expelled for the mechanisms to work, therefore check and exhaust valves are a necessity to any moving vehicle. It is equally important to maintain check valves to make sure they do not become damaged from natural elements and the wear-and-tear of driving. 
## Considerations when choosing a check or exhaust valve
•	**Engine** -Dependant on the needs of the engine and the size of the mechanisms will reflect what type of exhaust valve is needed. Our range of exhaust valves have varied sizes and dimensions to suit the capacity of your engine. 

•	**Rate of flow** - The rate of flow is also dependant on the power and characteristics of the engine and mechanisms. Cromwell's range have various check valves that suit the needs of engines that need either high, medium or low flows of fluid, gases and fumes.

•	**Temperature range** - Fumes and gases from engines naturally create high temperatures, so check and exhaust valves must be designed to be resilient and endure both high and low temperatures. Most of Cromwell's range of check and exhaust valves can endure from -20°C to +70°C for a resilient, long-lasting product. 

### FAQs
*Why do engine valves wear out or break down?*

Engine and check valves break down because of the natural high temperatures they must endure each time an engine is turned on. Dependant on the quality of the valve, how well the engine is serviced, how vehicles are driven and how the mechanisms are cared for will reflect the longevity of valves. However, by design they can not last forever and must be regularly checked. 

*What are the most common problems with exhaust and check valves?*
 
The most common problems that signal for replacement check and engine valves are a change in noise of the exhaust, exhaust smoke, any leaking from the pipe, rust and unusual vibrations. These are just several symptoms that should encourage the user to check their exhaust valves and general engine mechanisms, however regular servicing and maintenance care should be upheld for healthy valves and optimal engine performance. 



Flow Control

Control Valves & Switches

Kennedy

Non-Return Valve Female to Female - Parallel
Push-Fit Pneumatic Fittings
Pressure range: +2 to +8bar.
Temperature range: -25 to +90°C.

Kennedy

Non-Return Valve - Female to Female: Parallel

4 Option(s) Available

Kennedy

VNR1FF NON-RETURN VALVE G 1/8-G1/8 F-F

Kennedy

VNR3FF NON-RETURN VALVE G 3/8-G3/8 F-F

Kennedy

VNR4FF NON-RETURN VALVE G 1/2-G1/2 F-F

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