Suction filters either equipped with or without an integrated check valve function and combined with a stop valve.
GEA suction filters, combined with a stop valve are primarily connected to the suction side of screw-type compressor units. They protect the compressor medium circulation from soiling. When the compressor unit is switched off, the integrated check valve prevents the compressor from rotating in the reverse direction. The suction filter is spring loaded and improves the closing of the check valve. Types 572/551 also use an additional hot gas connection. GEA suction filters are provided with bypasses or test ports, if required. They are fitted with a check valve and with a replaceable strainer insert. The check valve is attached to the bottom of the suction filter casing with hexagonal nuts and is maintenance-free. The strainer is self-centring and is held in the bottom of the casing. As soon as the flow of the medium slows down and comes to a standstill, the check valve closes. This prevents the screw-type compressor from reversing and thus no oil is lost. The flow of the refrigerant to the compressor can be prevented by the stop valve.
Combinations type SF & SFR
SF-SFR Suction Filter Combinations | |
material | steel or stainless steel |
nominal size | DN 80-500 |
nominal pressure level | PS 25, PS 40, PS 63 |
temperature range for
standard valves | -60 °C to +150 °C |
temperature range for
HT valve series | -10 °C to +200 °C |
connection | flanged ends as per DIN and ANSI |
additional information | mesh size:
63 / 80 / 100 / 135 / 150 / 200 / 250 / 500 µm available with integrated check valve (SFR) |
The GEA Ammonia Dryer removes water from the refrigerant cycle and makes the perfect addition to ammonia refrigeration systems along with filters and purgers.
PR-OLEO® ammonia oils are the natural choice to optimize industrial cooling and heating applications operating with reciprocating or screw compressors.
Welcome to the world of simplicity with GEA Service Kits for screw and reciprocating compressors. Our mission is clear - to make your experience with original spare parts seamless and your operations smoother than ever. "Take it easy, use a kit" is not just a tagline – it is a promise we deliver on.
Digital transformation at GEA means more than new tools – it’s about bold ideas, customer impact and a culture that values and drives innovation. Meet this year’s GEA Better World Awards Innovation & Digitalization winners who were celebrated for solutions which are shaping the future of our business.
While the initial interest in heat pumps was to save on operating costs, reducing emissions is now the main driver for the technology. Learn more about how GEA is spearheading efforts to increase energy efficiency and reduce CO2 emissions through hidden champion heat pump technology for industrial and district heating sectors.
What if your favorite chocolate didn’t require cocoa beans and your coffee was locally produced? As climate disruption, price hikes and ethical concerns hit two of our most beloved indulgences, scientists are reimagining how we produce them – using microbes, not monocultures. The goal: preserve the flavor and properties of coffee and chocolate while minimizing carbon emissions and improving food resilience.