What is the correct installation procedure for the Locking ring for TW coupling DIN 28450, stainless steel, type MKH when used with the MKV sealing ring?

The correct installation procedure for the Locking ring for TW coupling DIN 28450, stainless steel, type MKH when used with the MKV sealing ring: 1. Inspect components: ensure both the Locking ring for TW coupling DIN 28450, stainless steel, type MKH and the MKV sealing ring are clean, undamaged and free of debris or corrosion. Verify material AISI 316 and that pressure/temperature limits (-0.8 to 16 bar; -20 Â°C to +65 Â°C) are suitable for the application. 2. Prepare mating parts: clean and, if specified, lightly lubricate the male and female TW coupling faces with a compatible lubricant that does not degrade the MKV sealing ring material. 3. Fit MKV sealing ring: place the MKV sealing ring evenly into its groove or seating on the coupling half, ensuring it sits flush without twists, folds or extrusion. Confirm correct orientation if the ring is asymmetric. 4. Align coupling halves: bring the two TW coupling halves together so the MKV sealing ring interfaces centrally between them. Avoid offset or angled engagement. 5. Install Locking ring for TW coupling DIN 28450, stainless steel, type MKH: position the Locking ring over the coupling connection and engage it according to design.rotate or snap it into its locking recess until it fully seats. Ensure the ring locks the halves securely and the MKV sealing ring remains in place and evenly compressed. 6. Verify engagement and seal: confirm the connection is fully locked, the MKV sealing ring is uniformly compressed (no extrusion or uneven gaps), and the assembly is mechanically secure. 7. Pressure test: if required, perform a pressure test within the specified range to check for leaks before normal operation. 8. Maintenance: periodically inspect the Locking ring for TW coupling DIN 28450, stainless steel, type MKH and MKV sealing ring for wear, corrosion or damage and replace components as needed. Follow any specific manufacturer instructions or drawings for locking motion, torque or orientation if provided.

Can the Locking ring for TW coupling DIN 28450, stainless steel, type MKH be used with other sealing rings besides MKV?

No - the Locking ring for TW coupling DIN 28450, stainless steel, type MKH is designed to be used specifically with the MKV sealing ring. Together they form the MK connection manufactured to EN ISO 14420-6 (formerly DIN 28450). Using other sealing rings is not recommended because fit, sealing performance and pressure/temperature ratings (â0.8 to 16 bar, â20 Â°C to +65 Â°C) were specified for the MKH+MKV combination and alternative rings may not meet the required dimensions, materials (AISI 316) or standards.

Can the Locking ring for TW coupling DIN 28450, stainless steel, type MKH be used at temperatures below -20Â°C?

No. The Locking ring for TW coupling DIN 28450, stainless steel, type MKH cannot be used below â20 Â°C. The product specification for the MKH closing ring (used together with the MKV sealing ring to form the MK connection, manufactured to EN ISO 14420-6/DIN 28450, AISI 316) lists an operating temperature range of â20 Â°C to +65 Â°C. Using the Locking ring outside this range would be beyond the stated operating limits and could impair performance, sealing, or safety. If operation below â20 Â°C is required, consult the manufacturer for alternative materials or qualified low-temperature variants.

Locking ring for TW coupling DIN 28450, stainless steel, type MKH

Additional information

Material	SS – stainless steel

MKH closing ring for TW transfer connections. To be used with MKV sealing ring. Together they form the MK connection. Manufactured according to standard EN ISO 14420-6 (formerly DIN 28450). Intended for liquids, bulk materials, and gases (except liquefied gas and vapor). Material: AISI 316 steel. Pressure: from -0.8 bar to 16 bar. Operating temperature: from -20°C to +65°C.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
TW-MKH-050-SS	Closing ring TW 1503-4, AISI 316	-	16	In stock	Enquiry
TW-MKH-050-SSR	Closing ring TW 1503-4, AISI 316	-	16	In stock	Enquiry
TW-MKH-080-SS	Closing ring TW 503-4, AISI 316	-	16	In stock	Enquiry
TW-MKH-080-SSR	Closing ring TW 503-4, AISI 316	-	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

MKH closing ring for TW transfer connections. To be used with MKV sealing ring. Together they form the MK connection. Manufactured according to standard EN ISO 14420-6 (formerly DIN 28450). Intended for liquids, bulk materials, and gases (except liquefied gas and vapor). Material: AISI 316 steel. Pressure: from -0.8 bar to 16 bar. Operating temperature: from -20°C to +65°C.