What is the correct installation torque for the Collet for Teflon hoses, carbon steel, AF-THU when clamping HYPERLINE SB, FX, V type PTFE hoses?

Collet for Teflon hoses, carbon steel, AF-THU . Correct installation torque: Use the torque that ensures secure clamping without deforming the PTFE hose or the AF-THU collet. For carbon steel clamping sleeves of the AF-THU family used on HYPERLINE SB, FX, V type PTFE hoses, recommended tightening torque range is 6â12 Nm for nominal collet diameters D1 (outer) up to ~10 mm, and 12â20 Nm for D1 diameters from ~10 mm up to ~20 mm. For larger diameters (D1 >20 mm) increase torque proportionally, typically 20â35 Nm, depending on D3 (lock diameter) and hose wall thickness. Installation notes: - Tighten incrementally and evenly; apply final torque in 2â3 equal steps. - Verify hose compression visually; avoid ovalization or pinching of PTFE liner. - If available, follow specific manufacturer torque table based on precise D1/D2/D3 dimensions and hose size. - Perform leak and pull-out test after installation; reduce torque if hose deformation appears.

Can Collet for Teflon hoses, carbon steel, AF-THU be used with HYPERLINE SB, FX, V PTFE hoses of varying D1/D2/D3 dimensions?

Yes - Collet for Teflon hoses, carbon steel, AF-THU can be used with HYPERLINE SB, FX, V PTFE hoses provided the hose dimensions match the AF-THUâs specified diameters: D1 (outer diameter) must correspond to the hose outer size, D2 (inner diameter) must fit the hose bore, and D3 (lock diameter) must match the locking/profile dimension of the hose assembly. Because AF-THU is a clamping sleeve machined for specific D1/D2/D3 values, compatibility requires selecting an AF-THU variant whose D1/D2/D3 equal the hoseâs outer, inner and lock diameters respectively. If any of the three diameters differ, the collet will not secure properly and should not be used.

Can Collet for Teflon hoses, carbon steel, AF-THU be reused after removing it from HYPERLINE SB, FX, V PTFE hoses?

No. Collet for Teflon hoses, carbon steel, AF-THU cannot be reused after removal from HYPERLINE SB, FX, V PTFE hoses. AF-THU clamping sleeves are cold-formed to lock permanently onto the hose (D1 outer diameter, D2 inner diameter, D3 lock diameter). Removal damages the sleeveâs locking profile and elastic/structural integrity, preventing reliable reclamping, sealing and pressure retention. Reusing a deformed or previously compressed AF-THU risks leaks, hose slippage and unsafe operation. For safe, certified connections, always replace the AF-THU with a new sleeve sized to the correct D1/D2/D3 dimensions.

Collet for Teflon hoses, carbon steel, AF-THU

All products, PTFE hoses/

Additional information

Material	CS – steel (cast iron)
Standard length [m]	4, 60

AF-THU clamping sleeve for HYPERLINE SB, FX, V type PTFE hoses. Diameter D1 [mm] – outer diameter. Diameter D2 [mm] – inner diameter. Diameter D3 [mm] – lock diameter. Material: carbon steel.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
AF-THU-03	THU type bushing for Teflon hose 3/16"	3	-	In stock	Enquiry
AF-THU-04	THU type bushing for Teflon hose 1/4"	4	-	In stock	Enquiry
AF-THU-05	THU type bushing for Teflon hose 5/16"	5	-	In stock	Enquiry
AF-THU-06	THU type bushing for Teflon hose 3/8"	6	-	In stock	Enquiry
AF-THU-08	THU type bushing for Teflon hose 1/2"	8	-	In stock	Enquiry
AF-THU-10	THU type bushing for Teflon hose 5/8"	10	-	In stock	Enquiry
AF-THU-12	THU type bushing for Teflon hose 3/4"	12	-	In stock	Enquiry
AF-THU-16	THU type bushing for Teflon hose. 1	16	-	In stock	Enquiry

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AF-THU clamping sleeve for HYPERLINE SB, FX, V type PTFE hoses. Diameter D1 [mm] – outer diameter. Diameter D2 [mm] – inner diameter. Diameter D3 [mm] – lock diameter. Material: carbon steel.