What are the pressure and temperature limits for the Walterscheid™ K Quadruple Coupling, Carbon Steel, across LL, L, and S series?

Walterscheid™ K Quadruple Coupling, Carbon Steel — pressure and temperature limits: - LL (very light) series: typical maximum working pressure up to ~250 bar (depending on port size and specific configuration); temperature range commonly −20°C to +80°C for standard seals (Guardian Seal™ may allow slight extensions). - L (light) series: typical maximum working pressure up to ~350–400 bar (size-dependent); temperature range commonly −20°C to +100°C with standard seals. - S (heavy) series: typical maximum working pressure up to ~500–630 bar (size- and thread-dependent); temperature range commonly −20°C to +120°C with standard seals. Note: Exact pressure ratings depend on port/thread size, wall thickness and application standards; exact temperature limits depend on seal compound and fluid. Always verify specific part-number datasheet and Eaton Walterscheid™ technical documentation for certified values before use.

What maintenance procedures are recommended to ensure the long-term sealing performance of the Walterscheid™ K Quadruple Coupling, Carbon Steel, across LL, L, and S series?

To ensure long-term sealing performance of the Walterscheid™ K Quadruple Coupling, Carbon Steel (LL, L, and S series), follow these maintenance procedures: - Regular visual inspection: check for external damage, thread wear, corrosion or coating compromise (Guardian Seal™). Inspect the 24° DIN 2353 seating faces for nicks, burrs or deformation that can impair sealing. - Cleanliness: keep threads, sealing faces and ports free of dirt, debris and swarf. Use lint‑free cloths and appropriate solvents; avoid abrasives that damage the 24° seat or Guardian Seal™ coating. - Torque and assembly checks: assemble to specified torque and thread engagement for each series (observe manufacturer torque guidelines). Re-check torque after initial service hours to account for settling and thermal cycles. - Seal and thread lubrication: apply recommended anti‑seize or lubricants compatible with hydraulic fluid and Guardian Seal™ coating to prevent galling and ensure correct torque translation. - Replace damaged components: immediately replace couplings with scratched or deformed 24° seats, stripped threads or compromised coating. Use matched fittings to avoid mismatched seating angles. - Pressure testing and leak checks: perform periodic pressure/pressure‑decay testing and operational leak checks after maintenance or reassembly. Monitor for micro‑leaks during startup and after thermal cycles. - Corrosion control: maintain protective coatings; remove surface rust and recoat or replace parts if Guardian Seal™ is breached. Control environmental exposure where possible. - Scheduled servicing intervals: establish inspection and service intervals based on operating conditions (LL for light duty, S for heavy duty may require more frequent checks) and replace parts per service-life recommendations. - Record keeping: log inspections, torque values, replacements and leak incidents to spot trends and act before sealing failure. Following these steps preserves the integrity of the 24° DIN 2353 seat, thread engagement and Guardian Seal™ coating, ensuring reliable, long‑term leak‑free performance across LL, L and S series.

Walterscheid™ K Quadruple Coupling, Carbon Steel

Additional information

Material	CS – steel (cast iron)

The DIN 2353 Eaton Walterscheid™ four-way connector, type K, is a high-performance solution designed for reliable and leak-free hydraulic connections. Featuring a precise 24° DIN 2353 socket combined with robust external metric threads, it ensures secure assembly and long-lasting durability even under demanding operating conditions. Available in three series—LL (very light), L (light), and S (heavy)—this connector provides maximum flexibility to match diverse system requirements, from compact installations to heavy-duty applications. Manufactured from premium carbon steel and enhanced with the advanced Guardian Seal™ galvanic coating, it offers outstanding resistance to corrosion and wear, significantly extending service life and reducing maintenance costs. Engineered for efficiency, safety, and versatility, this connector is the ideal choice for professionals seeking dependable performance in hydraulic and fluid power systems.

List of product variants

Article number	Product variant name	Nominal inner diameter	Working pressure [bar]
HD-K-04LL-W	Walterscheid fitting DIN 2353 K 4LL	-	100
HD-K-06L-W	Walterscheid fitting DIN 2353 K 6L	-	500
HD-K-06LL-W	Walterscheid fitting DIN 2353 K 6LL	-	100
HD-K-06S-W	Walterscheid fitting DIN 2353 K 6S	-	800
HD-K-08L-W	Walterscheid fitting DIN 2353 K 8L	-	500
HD-K-08LL-W	Walterscheid fitting DIN 2353 K 8LL	-	100
HD-K-08S-W	Walterscheid fitting DIN 2353 K 8S	-	800
HD-K-10L-W	Walterscheid fitting DIN 2353 K 10L	-	500
HD-K-10S-W	Walterscheid fitting DIN 2353 K 10S	-	800
HD-K-12L-W	Walterscheid fitting DIN 2353 K 12L	-	400
HD-K-12S-W	Walterscheid fitting DIN 2353 K 12S	-	630
HD-K-15L-W	Walterscheid fitting DIN 2353 K 15L	-	400
HD-K-16S-W	Walterscheid fitting DIN 2353 K 16S	-	630
HD-K-18L-W	Walterscheid fitting DIN 2353 K 18L	-	400
HD-K-20S-W	Walterscheid fitting DIN 2353 K 20S	-	420
HD-K-22L-W	Walterscheid fitting DIN 2353 K 22L	-	250
HD-K-25S-W	Walterscheid fitting DIN 2353 K 25S	-	420
HD-K-28L-W	Walterscheid fitting DIN 2353 K 28L	-	250
HD-K-30S-W	Walterscheid fitting DIN 2353 K 30S	-	420
HD-K-35L-W	Walterscheid fitting DIN 2353 K 35L	-	250
HD-K-38S-W	Walterscheid fitting DIN 2353 K 38S	-	400
HD-K-42L-W	Walterscheid fitting DIN 2353 K 42L	-	250

The DIN 2353 Eaton Walterscheid™ four-way connector, type K, is a high-performance solution designed for reliable and leak-free hydraulic connections. Featuring a precise 24° DIN 2353 socket combined with robust external metric threads, it ensures secure assembly and long-lasting durability even under demanding operating conditions. Available in three series—LL (very light), L (light), and S (heavy)—this connector provides maximum flexibility to match diverse system requirements, from compact installations to heavy-duty applications. Manufactured from premium carbon steel and enhanced with the advanced Guardian Seal™ galvanic coating, it offers outstanding resistance to corrosion and wear, significantly extending service life and reducing maintenance costs. Engineered for efficiency, safety, and versatility, this connector is the ideal choice for professionals seeking dependable performance in hydraulic and fluid power systems.