Energy and pressure balance
Every additional bar in the network costs money. If you need to raise pressure so that “there is 6 bar at the end”, the issue is usually pressure drop or medium loss, not insufficient compressor capacity.
In a pneumatic system, operational stability is not determined by “one expensive component”. What matters is whether the line has the correct nominal bore (DN), whether hoses and fittings create local restrictions, whether threaded connections are properly sealed, and whether the medium has the right quality (filtration, condensate management, pressure stabilisation).
The RIEGLER range in the CPP PREMA store includes the components that “close” the system: quick couplings and hose tails, GEKA claw couplings, PVC hoses, hose connectors, and compressed air preparation. These are the components that, in day-to-day Maintenance (MRO) practice, most often determine pressure drops, leakage, and operating costs.
RIEGLER supplies installation and connection components used in compressed air systems and technical media lines. In heavy industry and multi-shift production, what counts is not “marketing” but repeatable assembly, dimensional compatibility, and the ability to service quickly under MRO conditions.
In plant practice, it is the connection hardware that generates the largest “cost tail”: micro-leaks on threads, pressure drop caused by an undersized DN, an incorrectly selected hose clamp, or a hose that is bent and works the joint. That is why this page guides selection the engineering way: by parameters and via categories that enable comparison of variants.
Compressed air is one of the most expensive utilities in a plant. Costs do not come only from compressor operation, but from a system that is leaking or restricted. Then, to maintain parameters at the point of use, the plant raises network pressure — increasing energy cost and compressor room load.
Bottlenecks are usually local losses (fittings, quick couplings, reducers, tees), not the pipe itself. An undersized DN acts like a throttle: at standstill it looks “OK”, under flow a pressure drop appears. In the process this means: the tool loses power, the cycle time increases, and the operator compensates by “turning up” the pressure.
If you want an engineering approach, start with the basics: leak tightness (where air is escaping), DN and diameters (where the system throttles), air quality (condensate and contamination), and sectioning (whether service requires shutting down half the plant). If needed, see how we carry out an compressed air leak audit.
Every additional bar in the network costs money. If you need to raise pressure so that “there is 6 bar at the end”, the issue is usually pressure drop or medium loss, not insufficient compressor capacity.
Quick couplings, hose tails, reducers and tees are typical throttling and leakage points. Selection of DN and diameters should follow the end user’s demand, not “what was there before”.
With vibration and cyclic duty, assembly errors appear over time: hissing on the thread, clamp loosening, cracks at a hose bend. That is why thread compatibility and sealing method matter.
Link to these categories in your commercial copy. The customer can compare variants within parameter ranges and select a component that matches the system. This is more effective than linking to individual products.
MRO rule: a system can look correct “at standstill”. Only under flow do pressure drop, throttling and leakage appear. That is why selection should start with flow demand and connection compatibility.
Most returns come from an “almost correct” diameter: the hose tail does not match the hose inside diameter, the clamp is outside its working range, and over time the joint starts to leak.
MRO rule: if DN/diameters are too small, the problem shows up only under flow. Therefore, build the basket so you do not create bottlenecks at the connection point.
In industrial practice, leaks and claims most often result from three sources: incompatible thread and sealing method, incorrect diameter selection (hose/hose tail/clamp) and seal incompatibility with medium/temperature. Below are assembly and material rules that genuinely reduce problems.
Seal material often determines leak tightness and service life. If the system operates with condensate, oil, higher temperature, or a harsh environment, seal selection is critical — because failures usually “show up later”.
If you see pressure drops, an unstable cycle or rising energy costs, start with flow demand and leak tightness.
Because static pressure says nothing about system behaviour under flow. Under load, linear and local losses show up: quick coupling DN, reducers, tees, hose length and diameter, as well as clogged filters. Diagnostics starts with measuring pressure at the point of use while the end user is operating.
A typical symptom is a tool “losing power” during continuous operation despite correct supply pressure. If replacing only the quick coupling with a larger bore restores performance, DN was the critical local restriction.
You increase energy cost and compressor load without removing the root cause: leaks or restrictions. As a result, the system runs at higher pressures, which worsens conditions for fittings and increases failure risk.
Thread size is not everything. BSPP (G) is parallel and often requires face sealing, BSPT (R) is tapered and seals on the threads. The wrong combination can “hold” for a while and then starts hissing.
With elevated temperature, oils, condensate, more aggressive environments, or where the point is process-critical. FKM provides a higher resistance margin; in MRO it typically costs less than one unplanned downtime event.
Measure pressure at the actuator supply under real load. If it drops, it is a flow issue (DN/diameters/restrictions/filter). If it does not, look into control or mechanics.
Because the hose works: temperature, vibration, pressure cycles, fatigue at a bend near the fitting. If the clamp is outside its working range or the hose tail is “almost” correct, a micro-leak grows over time.
Most commonly: threads, quick couplings, hose connections, branches (tees) and points of use. Perform leak testing not only “at standstill”, but under flow and in the system’s operating mode.
It makes economic sense: you limit loss scope in the event of a failure and shorten service time. In practice, you lose less to downtime and can isolate the problematic section without stopping everything.
Provide: DN / diameter, thread type and size, medium, pressure, temperature. We will verify compatibility and indicate the right store category.
