Water applications
Standard piston switches are not suitable for water applications. Pressure switches in stainless steel with EPDM seal have a special sealing system and can therefore also be used for water with corrosion protection, water mixtures or emulsions. The use of other fluid mixtures should be clarified with SUCO ESI North America (e.g. swelling of EPDM sealing could happen by water – oil mixture).
Pressure switches with stainless steel housings with EPDM-TW diaphragm, SUCO type “5” are designed for the use of drinking water, up to a maximum of 35 bar (500 psi).
Gas applications
Our pressure switches are suitable for liquid media, and our diaphragm pressure switches are also suitable for gaseous media. Gaseous media place particular demands on leak-tightness how ever. The leakage rate is dependent on the respective gaseous medium, the working pressure and the permeability of the seal material used in the pressure switch. Their lower leakage rates mean diaphragm pressure switches are better suited for gas pressures than piston pressure switches. Piston pressure switches are not suitable for gaseous media, particularly oxygen.
We also offer Low Pressure Transducer suitable with air, non-corrosive gases, and liquids compatible with silicon.
Please consult us; we are able to offer suitable solutions.
Oxygen applications
Our mechanical pressure switches of the diaphragm type can be used with oxygen; piston pressure switches are not suitable for oxygen. We recommend the EPDM seal, which the switch datasheets list for oxygen. If oxygen is used, the applicable accident prevention regulations must be observed. For most diaphragm series, the user manuals recommend a maximum operating pressure of 10 bar, which should not be exceeded (50 bar for series 0186). Please contact our engineering team to confirm the right switch for your oxygen application.
Overpressure safety of vacuum switches
Our vacuum switches are overpressure safe up to 20 or 35 bar depending on type.
cCSAus approval
SUCO mechanical pressure switch types 0110–0123, 0132–0137, 0163, 0164, 0166–0171, 0180, 0181, 0184–0187, 0190, 0191 and 0194–0197, and vacuum switch 0151, are listed on CSA Certificate of Compliance 1205719. The CSA mark together with “c” and “us” combines the control stamps for introduction onto the Canadian and American markets. The certificate lists CSA C22.2 No. 14 and UL 508 (Industrial Control Equipment) as the applicable requirements.
Let us offer the pressure switch or pressure transducer that best fits your application.
Contact us > Phone: 1-800-473-7313 | Email: sales@sucoesi.com