Is the TW coupling DIN 28450 with GW BSP, stainless steel with E-CTFE lining, type VK compatible with temperatures down to -40Â°C and up to +130Â°C?

Yes. TW coupling DIN 28450 with GW BSP, stainless steel with E-CTFE lining, type VK is compatible with temperatures from approximately â40Â°C up to +130Â°C. The E-CTFE lining provides very high chemical resistance and stable performance across that temperature range, and the stainless steel construction with Teflon thread sealing supports use with aggressive media.

Can the TW coupling DIN 28450 with GW BSP, stainless steel with E-CTFE lining, type VK be used with highly aggressive chemicals across full pH 1â14?

Yes. The TW coupling DIN 28450 with GW BSP, stainless steel with E-CTFE lining, type VK is designed for the most chemically aggressive media where AISI 316 is insufficient. The E-CTFE lining offers very high chemical resistance across a wide temperature range (â -40Â°C to +130Â°C) and is resistant to all acids, alkalis and aggressive substances across pH 1â14. Thread sealing uses PTFE. Thus this coupling is suitable for highly aggressive chemicals across the full pH 1â14 range.

Does the TW coupling DIN 28450 with GW BSP, stainless steel with E-CTFE lining, type VK require special maintenance after exposure to abrasive media?

No special maintenance is generally required for the TW coupling DIN 28450 with GW BSP, stainless steel with E-CTFE lining, type VK after exposure to abrasive media, provided normal inspection and cleaning routines are followed. E-CTFE lining offers high abrasion resistance and excellent chemical resistance across a wide temperature and pH range, protecting the AISI 316 stainless steel body from aggressive media for which stainless alone would be insufficient. Recommended actions after exposure to abrasive or highly contaminated media: - Rinse thoroughly with a compatible, nonâabrasive cleaning fluid to remove loose particulates. - Inspect the coupling and lining visually for wear, gouging, delamination, or breaches in the E-CTFE layer. - Check thread sealing (Teflon seal type GD) for damage or compression set; replace seals if compromised. - Verify mechanical integrity of the stainless steel components and threads; replace the coupling if structural damage is found. - Where particulate ingress is likely, consider flushing the connected system to prevent embedded abrasives from abrading mating parts. If severe abrasive conditions are frequent, increase inspection intervals and keep spare linings/seals available. For specific cleaning agents, intervals, or service life estimates, follow the manufacturerâs maintenance guidelines.

TW coupling DIN 28450 with GW BSP, stainless steel with E-CTFE lining, type VK

Additional information

Material	SS – stainless steel

coupling plug for transfer connection type VK with internal BSP thread and E-CTFE lining. Designed for installation on hose ends or piping systems with external BSP thread. Manufactured according to standard EN ISO 14420-6 (formerly DIN 28450). Used for the most chemically aggressive media, for which the corrosion resistance of AISI 316 stainless steel is insufficient. E-CTFE features very high chemical resistance over a wide temperature range (approximately from -40°C to +130°C). It is resistant to all acids, alkalis, and other aggressive substances (pH range 1 ÷ 14). It has high mechanical properties, particularly hardness and abrasion resistance. Material: stainless steel. Thread sealing (seal type GD): Teflon.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
TW-VK-050-SSE	Adaptor VK 50 (TW 1501) with 2" BSP thread, AISI 316 / CF-E-CTFE	-	16	In stock	Enquiry
TW-VK-080-SSE	Adaptor VK 80 (TW 501) with GW 3" BSP, AISI 316 / CF-E-CTFE	-	16	In stock	Enquiry
TW-VK-100-SSE	Adaptor VK 100 with GW 4" BSP, AISI 316 / E-CTFE	-	16	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

coupling plug for transfer connection type VK with internal BSP thread and E-CTFE lining. Designed for installation on hose ends or piping systems with external BSP thread. Manufactured according to standard EN ISO 14420-6 (formerly DIN 28450). Used for the most chemically aggressive media, for which the corrosion resistance of AISI 316 stainless steel is insufficient. E-CTFE features very high chemical resistance over a wide temperature range (approximately from -40°C to +130°C). It is resistant to all acids, alkalis, and other aggressive substances (pH range 1 ÷ 14). It has high mechanical properties, particularly hardness and abrasion resistance. Material: stainless steel. Thread sealing (seal type GD): Teflon.