What is the correct torque or tightening procedure for the Hose collet, carbon steel, type CNFH HEAVY DUTY to ensure a secure crimp on CN type ends without damaging rubber or plastic hoses?

Hose collet, carbon steel, type CNFH HEAVY DUTY . correct torque/tightening procedure: 1. Inspect parts: ensure hose end (CN type) and Hose collet, carbon steel, type CNFH HEAVY DUTY are clean, undamaged and of matching sizes (D1 outer, D2 inner, D3 lock diameter). Verify hose wall thickness and material (rubber or plastic). 2. Pre-assemble: slide collet over hose so D2 fits snugly over hose outer diameter; seat hose onto the CN coupling fully. 3. Tightening principle: use gradual, evenly distributed compression to engage the lock diameter (D3) without crushing the hose. Do not rely on a single high torque impulse. 4. Recommended torque range: for carbon-steel crimp sleeves of this profile on rubber/plastic hoses, start with a low torque and increase in steps. Typical target torque: 6â12 Nm for small diameters (D1 â¤ ~25 mm), 12â30 Nm for medium (D1 ~25â50 mm), and 30â60 Nm for larger sizes (D1 >50 mm). Exact torque depends on D1/D2/D3 and hose material.use the lower end for softer plastic/rubber to avoid damage. 5. Procedure: - Hand-tighten initial nut or clamp to seat components. - Apply torque in 1/3 increments: tighten to ~30% of target, inspect, then to 60%, inspect, then to 100%. - Rotate assembly between steps (if applicable) to ensure uniform compression around the circumference. - After final torque, visually and manually inspect for hose distortion, extrusion, or cuts. Check that the collet lock (D3) fully engages without slippage. 6. Verification: - Perform a pressure/leak test at working pressure plus safety margin. - If leaks or hose deformation occur, reduce torque and consider using an internal sleeve or softer collet/profile suited for that hose. 7. Safety notes: never exceed manufacturer-specified torque if available. If precise torque data for Hose collet, carbon steel, type CNFH HEAVY DUTY and your specific hose are required, consult the supplier or perform a controlled pull/pressure test to define the optimal torque. If you provide D1/D2/D3 and hose material/thickness, I can give a narrower torque recommendation.

Can the Hose collet, carbon steel, type CNFH HEAVY DUTY be reused after removal, and what inspection checks are required before reinstallation?

Yes - the Hose collet, carbon steel, type CNFH HEAVY DUTY can be reused after removal, but only after careful inspection and only if no damage or significant wear is found. Before reinstallation check: 1) Visual integrity - no cracks, bends, corrosion, deep pitting or flaking of the galvanized surface; 2) Dimensions - D1, D2 and D3 must remain within tolerance and roundness must be preserved (no ovalization); 3) Locking features - threads, tabs or lock diameter D3 must engage cleanly and show no deformation or wear that would impair clamping; 4) Surface condition - no burrs, sharp edges or contamination that could damage hose or prevent full seating; 5) Fit test - dry-fit the collet on the coupling/end to confirm correct seating and uniform contact; 6) Function test after assembly - pressure/operational test at appropriate working pressure to confirm leak-free, secure connection. If any defect or dimensional deviation is present, replace the Hose collet, carbon steel, type CNFH HEAVY DUTY.

How should Hose collet, carbon steel, type CNFH HEAVY DUTY be stored to prevent corrosion or deformation before use?

Hose collet, carbon steel, type CNFH HEAVY DUTY should be stored to avoid corrosion and deformation as follows: - Keep in a dry, well-ventilated indoor area with low humidity (preferably <60%) to prevent galvanic or surface corrosion of the galvanized carbon steel. - Store off the floor on pallets or shelving to avoid contact with moisture, chemicals or salt; use corrosion-resistant shelf liners if needed. - Maintain a stable temperature and avoid rapid temperature swings that can cause condensation and promote rust. - Protect from direct sunlight and UV exposure to prevent degradation of any packaging and to limit temperature-related stress. - Keep parts in their original packaging or wrap in rust-inhibiting paper/plastic film or corrosion inhibitor VCI bags to provide an additional moisture barrier. - Separate different diameters (D1/D2/D3) and avoid stacking heavy loads directly on collets to prevent deformation of the inner/outer/lock diameters; use padded separators or individual compartments. - Avoid contact with corrosive substances (acids, solvents, saltwater) and oily residues; if contamination occurs, clean and dry the parts promptly. - Handle with clean, dry gloves to prevent transferring sweat or salts; use appropriate lifting aids to prevent dropping or denting. - Inspect periodically for signs of corrosion or deformation; reapply protective coating or clean and rewrap if storage is prolonged. - For long-term storage, consider light application of a removable protective oil compatible with galvanized surfaces and reapply before use. Following these measures will help preserve the integrity of Hose collet, carbon steel, type CNFH HEAVY DUTY and ensure correct dimensions (D1, D2, D3) and performance at installation.

Hose collet, carbon steel, type CNFH HEAVY DUTY

All products, Low-pressure fittings and adapters/

Additional information

Material	CS – steel (cast iron)

CNFH HEAVY DUTY clamp sleeve for crimping rubber and plastic industrial hoses. Designed for CN type ends and couplings. Diameter D1 [mm] – outer diameter. Diameter D2 [mm] – inner diameter. Diameter D3 [mm] – lock diameter. Material: carbon steel, galvanized.

List of product variants

Article number	Product variant name	Nominal inner diameter	Working pressure [bar]
AC-CNFH-200A	HD sleeve for 2" hose (63.5÷67 mm), galvanized steel	50	-
AC-CNFH-200B	HD sleeve for 2" hose (67÷73 mm), galvanized steel	50	-
AC-CNFH-200C	HD sleeve for 2" hose (73÷79 mm), galvanized steel	50	-
AC-CNFH-250A	HD sleeve for hose 2.1/2" (76÷79 mm), galvanized steel	65	-
AC-CNFH-250B	HD sleeve for hose 2.1/2" (79÷92 mm), galvanized steel	65	-
AC-CNFH-300A	HD sleeve for 3" hose (89÷92 mm), galvanized steel	75	-
AC-CNFH-300B	HD sleeve for 3" hose (92÷98 mm), galvanized steel	75	-
AC-CNFH-300C	HD sleeve for 3" hose (98÷102 mm), galvanized steel	75	-
AC-CNFH-300D	HD sleeve for 3" hose (102÷105 mm), galvanized steel	75	-
AC-CNFH-300E	HD sleeve for 3" hose (105÷108 mm), galvanized steel	75	-
AC-CNFH-400A	HD sleeve for 4" hose (114÷121 mm), galvanized steel	100	-
AC-CNFH-400B	HD sleeve for 4" hose (121÷125 mm), galvanized steel	100	-
AC-CNFH-400C	HD sleeve for 4" hose (125÷128 mm), galvanized steel	100	-
AC-CNFH-400D	HD sleeve for 4" hose (128÷132 mm), galvanized steel	100	-
AC-CNFH-400E	HD sleeve for 4" hose (133÷136 mm), galvanized steel	100	-
AC-CNFH-400F	HD sleeve for 4" hose (133÷140 mm), galvanized steel	100	-
AC-CNFH-500A	HD sleeve for 5" hose (146÷152 mm), galvanized steel	125	-
AC-CNFH-500B	HD sleeve for 5" hose (152÷162 mm), galvanized steel	125	-
AC-CNFH-600A	HD sleeve for 6" hose (171÷181 mm), galvanized steel	150	-
AC-CNFH-600B	HD sleeve for 6" hose (181÷187 mm), galvanized steel	150	-
AC-CNFH-600C	HD sleeve for 6" hose (187÷192 mm), galvanized steel	150	-
AC-CNFH-600D	HD sleeve for 6" hose (194÷203 mm), galvanized steel	150	-
AC-CNFH-800A	HD sleeve for 8" hose (229÷238 mm), galvanized steel	200	-
AC-CNFH-800B	HD sleeve for 8" hose (240÷257 mm), galvanized steel	200	-

CNFH HEAVY DUTY clamp sleeve for crimping rubber and plastic industrial hoses. Designed for CN type ends and couplings. Diameter D1 [mm] – outer diameter. Diameter D2 [mm] – inner diameter. Diameter D3 [mm] – lock diameter. Material: carbon steel, galvanized.