Is the LAUX 42 lever connector socket with a welding stub, carbon steel, KKM suitable for use with oils or chemicals, and which gasket materials are recommended?

The LAUX 42 lever connector socket with a welding stub, carbon steel, KKM is primarily specified for water and a wide range of bulk-material and general-purpose applications. Use with oils or aggressive chemicals is possible only if the gasket material is compatible with the specific fluid. The standard gasket is EPDM, which is excellent for water, many acids, alkalis and steam, and works from â50Â°C to +120Â°C, but it is not recommended for most oils, hydrocarbons, fuels or many solvents. Recommended gasket choices: - EPDM (standard): good for water, many acids/alkalis, steam; NOT suitable for mineral oils, petrol, fuels, aromatic hydrocarbons, or most organic solvents. - NBR (Nitrile/BunaâN): suitable for mineral oils, hydraulic oils and general petroleum-based oils; limited temperature range compared to EPDM and poorer resistance to some chemicals. - FKM/VitonÂ®: best for a wide range of oils, fuels, lubricants and many aggressive chemicals; higher temperature and chemical resistance. - PTFE (Teflon) or PTFEâlined seals: for very aggressive chemicals and wide temperature/chemical compatibility (may require special seat design). Before use with any oil or chemical, confirm compatibility by: 1) Identifying the specific fluid and its concentration/temperature. 2) Selecting a gasket material compatible with that fluid (NBR, FKM or PTFE as above). 3) Ensuring operating temperature and pressure (max 12.5 bar liquid, 8 bar air) are within limits. If in doubt, consult the manufacturer or a chemical-compatibility chart to pick the correct gasket.

Can the LAUX 42 lever connector socket with a welding stub, carbon steel, KKM be used for high-temperature applications above 120Â°C and which gaskets work best?

No - the LAUX 42 lever connector socket with a welding stub, carbon steel, KKM Format is rated for operating temperatures from â50Â°C to +120Â°C, so it is not specified for continuous use above +120Â°C. For higher temperatures choose a connector with a gasket material rated above your target temperature. The standard EPDM gasket is suitable up to ~120Â°C; for elevated temperatures consider silicone (better heat resistance, typically up to ~200â230Â°C) or fluoroelastomer/Viton (good chemical and temperature resistance up to ~200â250Â°C), but verify compatibility with the conveyed medium and pressure. Also confirm with the manufacturer any changes to temperature rating after gasket replacement.

Can the LAUX 42 lever connector socket with a welding stub, carbon steel, KKM be used for vacuum service and what vacuum levels are supported?

Yes. the LAUX 42 lever connector socket with a welding stub, carbon steel, KKM Format can be used for vacuum service. The product description explicitly states âtightness under vacuum,â and its construction (carbon steel body with galvanized finish and an EPDM standard gasket) supports vacuum applications within its stated temperature and material compatibility limits. Supported vacuum levels: - No specific absolute vacuum value is given in the description. However, âtightness under vacuumâ implies suitability for typical industrial vacuum applications (e.g., low to moderate vacuum ranges used in transport, unloading of bulk materials and vacuum pumps). - For precise vacuum rating (absolute pressure or % of vacuum) you should verify with the manufacturer or test under your exact conditions if you need high/ultra-high vacuum performance. Factors to confirm for deeper vacuums: gasket permeability (EPDM is fine for moderate vacuum but not ideal for high/ultra-high vacuum), flange/weld integrity, and any fittings or seams. Operational limits to consider: - Maximum working pressures are 12.5 bar (liquids) and 8 bar (air). these are positive-pressure limits, not vacuum limits. - Temperature range: -50Â°C to +120Â°C; ensure gasket and material compatibility at your operating temperature. - If your medium is not water, confirm gasket material (EPDM standard) compatibility with the medium; EPDM is generally good for many applications but not compatible with hydrocarbons or certain solvents. Recommendation: Use for typical industrial vacuum (material handling, vacuum pumps) is acceptable. For quantified vacuum levels (e.g., <1 mbar, 10^-3 mbar), request manufacturer specification or perform validation testing.

A LAUX 42 lever coupling socket with a spigot for welding-on, steel carbon, KKM

All products, Lever couplings/

Additional information

Material	CS – steel (cast iron)
Standard length [m]	2

A LAUX 42 lever coupling socket with a weld-on connection with wide application np.: for transferring and unloading bulk materials (grain, flour, feed, granulates, cement, minerals), for pressure and vacuum pumps, for building temporary water and air installations in construction, mining and agriculture, and for irrigation systems. When selecting a coupling for a medium other than water, attention should be paid to the correct selection of the gasket material. The standard seal is an EPDM gasket. Material: steel carbon, galvanized. Maximum Working pressure: 12.5 bar (for fluids), 8 bar (for air). Vacuum tightness. Operating temperature: from -50°C to +120°C.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
TF-KKM-038-038	Socket KKM 38 mm for welding-on. 38 mm, galvanized steel	-	12.5	In stock	Enquiry
TF-KKM-048-050	Socket KKM 48 mm for welding-on. 50 mm, galvanized steel	-	12.5	In stock	Enquiry
TF-KKM-048-060	Socket KKM 48 mm for welding-on. 60 mm, galvanized steel	-	12.5	In stock	Enquiry
TF-KKM-076-060	Socket KKM 76 mm for welding-on. 60 mm, galvanized steel	-	12.5	In stock	Enquiry
TF-KKM-076-076	Socket KKM 76 mm for welding-on. 76 mm, galvanized steel	-	12.5	In stock	Enquiry
TF-KKM-076-089	Socket KKM 76 mm for welding-on. 89 mm, galvanized steel	-	12.5	In stock	Enquiry
TF-KKM-102-102	Socket KKM 102 mm for welding-on. 102 mm, galvanized steel	-	12.5	In stock	Enquiry
TF-KKM-102-114	Socket KKM 102 mm for welding-on. 114 mm, galvanized steel	-	12.5	In stock	Enquiry
TF-KKM-133-133	Socket KKM 133 mm for welding-on. 133 mm, galvanized steel	-	12.5	In stock	Enquiry
TF-KKM-133-139	Socket KKM 133 mm for welding-on. 139 mm, galvanized steel	-	12.5	In stock	Enquiry
TF-KKM-152-152	Socket KKM 152 mm for welding-on. 152 mm, galvanized steel	-	12.5	In stock	Enquiry
TF-KKM-152-168	Socket KKM 152 mm for welding-on. 168 mm, galvanized steel	-	12.5	In stock	Enquiry
TF-KKM-204-204	Socket KKM 204 mm for welding-on. 204 mm, galvanized steel	-	12.5	In stock	Enquiry
TF-KKM-204-219	Socket KKM 204 mm for welding-on. 219 mm, galvanized steel	-	12.5	In stock	Enquiry

Do you need a larger quantity of products or a bespoke quote?

Call us: +48 61 653 02 22 or email us: tubes@tubes-international.com

SEND ENQUIRY

A LAUX 42 lever coupling socket with a weld-on connection with wide application np.: for transferring and unloading bulk materials (grain, flour, feed, granulates, cement, minerals), for pressure and vacuum pumps, for building temporary water and air installations in construction, mining and agriculture, and for irrigation systems. When selecting a coupling for a medium other than water, attention should be paid to the correct selection of the gasket material. The standard seal is an EPDM gasket. Material: steel carbon, galvanized. Maximum Working pressure: 12.5 bar (for fluids), 8 bar (for air). Vacuum tightness. Operating temperature: from -50°C to +120°C.