Is the GE-BT screw connection, carbon steel, zinc-nickel compatible with standard hydraulic fluids and pressure ratings for LL, L, and S series?

Yes. The GE-BT screw connection, carbon steel, zinc-nickel is compatible with standard hydraulic fluids and the pressure ratings for the LL, L and S series, provided the connection is installed and sealed correctly. Rationale: - Geometry/material: It is a DIN 2353 24Â° socket design (metal-to-metal 24Â° cone) on carbon steel body.this is the conventional hydraulic fitting form used for mineral-oil and most synthetic hydraulic fluids. - Sealing: The GE-BT design uses thread sealing (BSPT external thread) with Teflon tape or anaerobic sealant and the 24Â° cone face; when properly applied these seals are suitable for standard hydraulic fluids and typical system pressures. - Pressure capability: The fitting is offered in LL (very light), L (light) and S (heavy) series with the declared safety factor of 2.5:1. Those series correspond to increasing pressure/strength classes; when matched to the correct series for your system, they meet the expected pressure ratings for hydraulic service. - Corrosion resistance: Zinc-nickel coating (6â10 Âµm, salt spray resistance up to 720 h) protects the carbon steel in typical hydraulic environments without affecting fluid compatibility. Caveats: Verify specific fluid compatibility for specialty fluids (strong acids, aggressive esters, phosphate esters) and confirm the required series (LL/L/S) matches your systemâs maximum working pressure and temperature. Follow manufacturer torque/installation and thread-sealing recommendations.

Does the GE-BT screw connection, carbon steel, zinc-nickel require specific thread sealant types for BSPT vs metric threads?

Yes. For the GE-BT screw connection, carbon steel, zinc-nickel the seal method depends on thread type: BSPT (tapered) requires thread sealing-use PTFE (Teflon) tape or an anaerobic/thread sealant as specified. The external metric thread version is sealed on the thread as well, so use the same compatible sealants (PTFE tape or anaerobic sealant). Ensure the chosen sealant is compatible with carbon steel and the zinc-nickel coating and suitable for the applicationâs pressure, media and temperature.

Can the GE-BT screw connection, carbon steel, zinc-nickel be used in marine environments and meet corrosion resistance standards?

Yes. The GE-BT screw connection, carbon steel, zinc-nickel can be used in marine environments and meet common corrosion-resistance expectations, with the following rationale: - Coating performance: The zincânickel plating (6â10 Âµm) offers very high corrosion resistance. stated resistance up to 720 hours in a salt spray chamber (neutral salt spray test) indicates strong protection against chlorideâinduced corrosion typical for marine atmospheres. - Base material and protection: Carbon steel with a continuous zincânickel layer provides cathodic and barrier protection; for many marine applications this is an accepted and widely used solution. - Design and sealing: The GE-BT screw connection design (24Â° DIN 2353 with thread sealing via PTFE tape or anaerobic sealant) supports leak-free joints if installed correctly, which is crucial in marine/humid conditions. - Safety factor and series options: Safety factor 2.5:1 and availability in LL, L, S series allow selection according to mechanical loads encountered in marine systems. Considerations and limitations: - Salt spray hours are indicative but not definitive for all marine exposures (tropical, splash, immersion, or long-term atmospheric exposure vary). 720 h NSS is a strong indicator but may be insufficient for extremely aggressive or submerged applications without additional protection. - Threads and sealing: Threaded joints remain potential corrosion initiation points; ensure correct application of PTFE or anaerobic sealant and periodic inspection in harsh environments. - Additional measures: For very aggressive or long-term offshore use, consider supplementary corrosion protection (e.g., thicker coatings, sacrificial anodes, duplex systems, or stainless/alloy alternatives) and verify compatibility with fluids, galvanic corrosion risks, and standards required by the project/specifier. Summary: For typical marine atmospheric and many marine equipment applications, the GE-BT screw connection, carbon steel, zinc-nickel is suitable and meets common corrosion-resistance expectations; for extreme, submerged, or long-term offshore conditions, further assessment or enhanced protection is recommended.

GE-BT screw connection, carbon steel, zinc-nickel

Additional information

Material	CS – steel (cast iron)
Standard length [m]	0.91

DIN 2353 screw connection, type GE-BT: 24° DIN 2353 socket with external metric thread and external BSPT thread (seal on the thread – with Teflon tape or anaerobic sealant). Safety factor 2.5:1. Available as: LL (very light series), L (light series), S (heavy series). Surface coated with zinc-nickel with a layer thickness of 6-10 µm, characterized by very high corrosion resistance (up to 720 hours without corrosion in a salt spray chamber). Material: carbon steel, zinc-nickel.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
HD-GE-04LL-BT-02-CN	DIN 2353 fitting GE 4LL 1/8" BSPT, Zn-Ni	-	100	In stock	Enquiry
HD-GE-06L-BT-02-CN	DIN 2353 connector GE 6L 1/8" BSPT, Zn-Ni	-	315	In stock	Enquiry
HD-GE-06L-BT-04-CN	DIN 2353 connector GE 6L 1/4" BSPT, Zn-Ni	-	315	In stock	Enquiry
HD-GE-06LL-BT-02-CN	DIN 2353 connector GE 6LL 1/8" BSPT, Zn-Ni	-	100	In stock	Enquiry
HD-GE-06LL-BT-04-CN	DIN 2353 fitting GE 6LL 1/4" BSPT, Zn-Ni	-	100	In stock	Enquiry
HD-GE-06S-BT-04-CN	DIN 2353 connector GE 6S 1/4" BSPT, Zn-Ni	-	630	In stock	Enquiry
HD-GE-08L-BT-02-CN	DIN 2353 connector GE 8L 1/8" BSPT, Zn-Ni	-	315	In stock	Enquiry
HD-GE-08L-BT-04-CN	DIN 2353 connector GE 8L 1/4" BSPT, Zn-Ni	-	315	In stock	Enquiry
HD-GE-08L-BT-06-CN	DIN 2353 connector GE 8L 3/8" BSPT, Zn-Ni	-	315	In stock	Enquiry
HD-GE-08L-BT-08-CN	DIN 2353 connector GE 8L 1/2" BSPT, Zn-Ni	-	315	In stock	Enquiry
HD-GE-08LL-BT-02-CN	DIN 2353 connector GE 8LL 1/8" BSPT, Zn-Ni	-	100	In stock	Enquiry
HD-GE-08LL-BT-04-CN	DIN 2353 fitting GE 8LL 1/4" BSPT, Zn-Ni	-	100	In stock	Enquiry
HD-GE-08S-BT-04-CN	DIN 2353 connector GE 8S 1/4" BSPT, Zn-Ni	-	630	In stock	Enquiry
HD-GE-10L-BT-04-CN	DIN 2353 fitting GE 10L 1/4" BSPT, Zn-Ni	-	315	In stock	Enquiry
HD-GE-10L-BT-06-CN	DIN 2353 connector GE 10L 3/8" BSPT, Zn-Ni	-	315	In stock	Enquiry
HD-GE-10L-BT-08-CN	DIN 2353 fitting GE 10L 1/2" BSPT, Zn-Ni	-	315	In stock	Enquiry
HD-GE-10S-BT-06-CN	DIN 2353 fitting GE 10S 3/8" BSPT, Zn-Ni	-	630	In stock	Enquiry
HD-GE-12L-BT-04-CN	DIN 2353 fitting GE 12L 1/4" BSPT, Zn-Ni	-	315	In stock	Enquiry
HD-GE-12L-BT-06-CN	DIN 2353 fitting GE 12L 3/8" BSPT, Zn-Ni	-	315	In stock	Enquiry
HD-GE-12L-BT-08-CN	DIN 2353 fitting GE 12L 1/2" BSPT, Zn-Ni	-	315	In stock	Enquiry
HD-GE-12S-BT-04-CN	DIN 2353 fitting GE 12S 1/4" BSPT, Zn-Ni	-	630	In stock	Enquiry
HD-GE-12S-BT-06-CN	DIN 2353 fitting GE 12S 3/8" BSPT, Zn-Ni	-	630	In stock	Enquiry
HD-GE-14S-BT-06-CN	DIN 2353 fitting GE 14S 3/8" BSPT, Zn-Ni	-	630	In stock	Enquiry
HD-GE-14S-BT-08-CN	DIN 2353 fitting GE 14S 1/2" BSPT, Zn-Ni	-	630	In stock	Enquiry
HD-GE-15L-BT-04-CN	DIN 2353 connector GE 15L 1/4" BSPT, Zn-Ni	-	315	In stock	Enquiry
HD-GE-15L-BT-06-CN	DIN 2353 fitting GE 15L 3/8" BSPT, Zn-Ni	-	315	In stock	Enquiry
HD-GE-15L-BT-08-CN	DIN 2353 connector GE 15L 1/2" BSPT, Zn-Ni	-	315	In stock	Enquiry
HD-GE-16S-BT-06-CN	DIN 2353 connector GE 16S 3/8" BSPT, Zn-Ni	-	400	In stock	Enquiry
HD-GE-16S-BT-08-CN	DIN 2353 connector GE 16S 1/2" BSPT, Zn-Ni	-	400	In stock	Enquiry
HD-GE-18L-BT-08-CN	DIN 2353 fitting GE 18L 1/2" BSPT, Zn-Ni	-	315	In stock	Enquiry
HD-GE-20S-BT-12-CN	DIN 2353 fitting GE 20S 3/4" BSPT, Zn-Ni	-	400	In stock	Enquiry
HD-GE-22L-BT-08-CN	DIN 2353 fitting GE 22L 1/2" BSPT, Zn-Ni	-	160	In stock	Enquiry
HD-GE-22L-BT-12-CN	DIN 2353 fitting GE 22L 3/4" BSPT, Zn-Ni	-	160	In stock	Enquiry
HD-GE-28L-BT-12-CN	DIN 2353 fitting GE 28L 3/4" BSPT, Zn-Ni	-	160	In stock	Enquiry
HD-GE-28L-BT-16-CN	DIN 2353 fitting GE 28L 1" BSPT, Zn-Ni	-	160	In stock	Enquiry

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DIN 2353 screw connection, type GE-BT: 24° DIN 2353 socket with external metric thread and external BSPT thread (seal on the thread – with Teflon tape or anaerobic sealant). Safety factor 2.5:1. Available as: LL (very light series), L (light series), S (heavy series). Surface coated with zinc-nickel with a layer thickness of 6-10 µm, characterized by very high corrosion resistance (up to 720 hours without corrosion in a salt spray chamber). Material: carbon steel, zinc-nickel.