Can the TW coupling DIN 28450 with GW BSP, stainless steel, type MK be used with temperatures down to -20Â°C and pressures up to 16 bar for liquids and gases (excluding liquefied gas/vapor)?

Yes. TW coupling DIN 28450 with GW BSP, stainless steel, type MK is specified for liquids and gases (excluding liquefied gas/vapor) at pressures from -0.8 bar up to 16 bar and for operating temperatures from -20Â°C to +65Â°C, taking into account the medium and the sealing material. Sealing materials provided: joint seal (GSD for 4" TWO) is hypalon and thread seal (GD) is PTFE (Teflon). Ensure the specific process medium and its compatibility with AISI 316 and the chosen seal (hypalon or PTFE) for safe operation at the indicated temperature and pressure limits.

Is the TW coupling DIN 28450 with GW BSP, stainless steel, type MK suitable for bulk materials as well as liquids and gases?

Yes. TW coupling DIN 28450 with GW BSP, stainless steel, type MK is suitable for liquids, bulk materials, and gases (except liquefied gas and vapor). It is manufactured to EN ISO 14420-6 (formerly DIN 28450) from AISI 316, rated for pressures from -0.8 bar to 16 bar and temperatures from -20Â°C to +65Â°C (dependent on medium and seal). Joint seal (GSD for 4" TWO) is hypalon; thread seal (GD) is PTFE. Ensure compatibility of seals with your specific medium and operating conditions.

Does the TW coupling DIN 28450 with GW BSP, stainless steel, type MK require special seals for acidic or abrasive media?

TW coupling DIN 28450 with GW BSP, stainless steel, type MK does not require special seals beyond the ones specified for general corrosive or abrasive service, but selection must match the mediumâs properties. The standard configuration uses: - Joint sealing (seal type GSD, for 4" type TWO): hypalon. suitable for many acids and alkaline solutions but limited with strong oxidizers, certain hydrocarbons, and high temperatures. - Thread sealing (seal type GD): PTFE (Teflon). chemically resistant to a wide range of acids and abrasive media. For acidic or abrasive media consider: - Chemical compatibility: verify hypalon compatibility with specific acids present (concentration and temperature). If incompatibility is identified, replace joint seal with a more chemical-resistant elastomer (e.g., Viton/FKM, EPDM, or perfluoroelastomer) or use a PTFE-based envelope seal. - Abrasion resistance: abrasive slurries can rapidly wear elastomeric seals; consider using harder or lined sealing solutions (PTFE, filled PTFE, or metal-encapsulated seals) or protective seat designs. - Temperature and pressure limits: ensure the chosen seal retains integrity within -20Â°C to +65Â°C and up to 16 bar for the application. - Compatibility testing and supplier guidance: consult seal manufacturers or the coupling supplier with full media composition, concentration, temperature, and flow/particulate data to confirm the optimal seal material. In summary: standard hypalon (GSD) and PTFE (GD) seals are broadly resistant, but for strong acids or highly abrasive media you should specify chemically/abrasion-resistant alternatives after compatibility review.

Coupling TW DIN 28450 with female thread BSP, steel stainless, type MK

Additional information

Material	SS – stainless steel

Socket coupling reloading TW type MK with a thread internal BSP. Made in accordance with the EN ISO 14420-6 standard (formerly DIN 28450). intended for liquids, bulk materials and gases (with the exception liquefied gas and steam). Material: steel AISI 316. pressure: od -0.8 bar up to 16 bar. Operating temperature: from -20°C to +65°C (should take into account medium and Material sealing). sealing coupling (type the gasket GSD, for 4″ type TWO): hypalon. sealing thread (type the gasket GD): teflon.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
TW-MK-050-SS	Coupling MK50 (TW 1502) with 2" BSP female, AISI 316	-	16	In stock	Enquiry
TW-MK-050-SSR	Coupling MK50 (TW 1502) with 2" BSP female, AISI 316	-	16	In stock	Enquiry
TW-MK-080-SS	Coupling MK80 (TW 502) with 3" BSP female, AISI 316	-	16	In stock	Enquiry
TW-MK-080-SSR	Coupling MK80 (TW 502) with 3" BSP female, AISI 316	-	16	In stock	Enquiry
TW-MK-100-SS	Coupling MK100 with 4" BSP female, AISI 316	-	16	In stock	Enquiry
TW-MK-100-SSR	Coupling MK100 with 4" BSP female, AISI 316	-	16	In stock	Enquiry

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Socket coupling reloading TW type MK with a thread internal BSP. Made in accordance with the EN ISO 14420-6 standard (formerly DIN 28450). intended for liquids, bulk materials and gases (with the exception liquefied gas and steam). Material: steel AISI 316. pressure: od -0.8 bar up to 16 bar. Operating temperature: from -20°C to +65°C (should take into account medium and Material sealing). sealing coupling (type the gasket GSD, for 4″ type TWO): hypalon. sealing thread (type the gasket GD): teflon.