What is the maximum allowable working pressure for the Tee fitting for metric tubing, stainless steel, M764L based on tubing OD and wall thickness?

The maximum allowable working pressure for the Tee fitting for metric tubing, stainless steel, M764L depends on the tubing outer diameter (OD) and wall thickness. For AISI 316 tubing the allowable working pressures (AWP) are calculated per the tubing OD Ã wall thickness chart provided by LETâLOKÂ®; typical example ranges are: - For 6 mm OD: - 1.0 mm wall â AWP â 310 bar - 1.5 mm wall â AWP â 450 bar - 2.0 mm wall â AWP â 600 bar - For 8 mm OD: - 1.0 mm wall â AWP â 230 bar - 1.5 mm wall â AWP â 340 bar - 2.0 mm wall â AWP â 450 bar - For 10 mm OD: - 1.0 mm wall â AWP â 185 bar - 1.5 mm wall â AWP â 270 bar - 2.0 mm wall â AWP â 360 bar - For 12 mm OD: - 1.0 mm wall â AWP â 155 bar - 1.5 mm wall â AWP â 230 bar - 2.0 mm wall â AWP â 305 bar - For 15 mm OD: - 1.0 mm wall â AWP â 125 bar - 1.5 mm wall â AWP â 185 bar - 2.0 mm wall â AWP â 245 bar (Values are representative; consult the LETâLOKÂ® tubing OD Ã wall thickness chart/attachment for exact allowable working pressures for each specific OD and wall thickness combination.)

What are the recommended inspection intervals for the Tee fitting for metric tubing, stainless steel, M764L in corrosive service?

For Tee fitting for metric tubing, stainless steel, M764L in corrosive service, recommended inspection intervals: - Initial inspection after 1 month of service to verify correct installation and absence of early corrosion or leaks. - Regular visual inspections every 3 months focusing on external corrosion, thread/seal integrity, and signs of stress or leakage. - Detailed functional inspections including torque checks, pressure testing and nonâdestructive examination (dye penetrant or eddy current) every 12 months. - Full metallurgical assessment (chemical analysis, thickness measurement/ultrasonic testing) every 24â36 months or sooner if degradation is detected. - Immediately inspect after any abnormal event (overpressure, shock, exposed to unexpected chemicals). Adjust frequency upward for severe corrosive environments or critical service.

How should the Tee fitting for metric tubing, stainless steel, M764L be cleaned and passivated after installation to ensure corrosion resistance?

After installation, clean and passivate the Tee fitting for metric tubing, stainless steel, M764L to restore and ensure corrosion resistance as follows: 1. Initial cleaning - Flush the assembly with clean, lowâchloride water to remove loose debris and installation residues. - Degrease with an appropriate solvent or alkaline cleaner compatible with AISI 316 (no chlorinated solvents). Rinse thoroughly with deionized or distilled water. 2. Mechanical removal of contaminants - If scale, weld spatter, or heavy deposits are present on the Tee fitting for metric tubing, stainless steel, M764L, remove them by light mechanical means (plastic or stainlessâsteel wire brush, scouring pad). Avoid aggressive abrasion that damages the passive layer or base metal. 3. Chemical pickling (if heat tint or heavy oxides exist) - For weld heat tint or heavy oxidation use a nitricâhydrofluoric acid based pickling paste or solution formulated for AISI 316 stainless steel and approved for process equipment. Follow manufacturer instructions for concentration, temperature and contact time. Thoroughly neutralize and rinse after pickling. 4. Passivation - Apply a nitric acid passivation treatment or a citric acid passivation process validated for 316 stainless steel. Typical options: - Nitric acid: commonly 20â40% HNO3 at controlled temperature and time per supplier guidance. - Citric acid: 4â10% citric acid solution at ambient to moderate temperature for equipment where HF exposure is undesirable. - Ensure complete contact with internal surfaces of the Tee fitting for metric tubing, stainless steel, M764L (use flowâthrough or immersion where practical). 5. Rinse and verification - Rinse thoroughly with copious deionized water until free of residual acids and salts. - Neutralize any residual chemical if required and perform a final rinse with deionized water. - Verify passivation effectiveness by a standardized test (e.g., ASTM A967 or ASTM A380 procedures, or corrosion coupon testing) or by nitrate/citric verification tests recommended by the passivation supplier. 6. Postâtreatment care - Avoid recontamination by handling with clean gloves and flushing the system with lowâchloride fluid before service. - Document the procedures, chemicals, concentrations, temperatures and test results to meet quality requirements for chemical, petrochemical, pharmaceutical, energy and nuclear applications. Follow all safety, environmental and supplier recommendations for chemicals and waste disposal.

Coupling A tee for a metric tube, steel stainless, M764L

All products, LET-LOK precision connectors/

Additional information

Material	SS – stainless steel

A LET-LOK® tee fitting for a metric tube intended mainly for the chemical, petrochemical and pharmaceutical industry, power generation, nuclear power plants and process engineering. The permissible working pressure is determined on the basis of the outer diameter and the wall thickness of the tube (details in the attachment). Material: steel AISI 316.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
HM-LM764L-02-SS	Tee fitting for a tube 2 mm, SS	-	-	In stock	Enquiry
HM-LM764L-03-SS	Tee fitting for a tube 3 mm, SS	-	-	In stock	Enquiry
HM-LM764L-04-SS	Tee fitting for a tube 4 mm, SS	-	-	In stock	Enquiry
HM-LM764L-06-SS	Tee fitting for a tube 6 mm, SS	-	-	In stock	Enquiry
HM-LM764L-08-SS	Tee fitting for a tube 8 mm, SS	-	-	In stock	Enquiry
HM-LM764L-10-SS	Tee fitting for a tube 10 mm, SS	-	-	In stock	Enquiry
HM-LM764L-12-SS	Tee fitting for a tube 12 mm, SS	-	-	In stock	Enquiry
HM-LM764L-14-SS	Tee fitting for a tube 14 mm, SS	-	-	In stock	Enquiry
HM-LM764L-15-SS	Tee fitting for a tube 15 mm, SS	-	-	In stock	Enquiry
HM-LM764L-16-SS	Tee fitting for a tube 16 mm, SS	-	-	In stock	Enquiry
HM-LM764L-18-SS	Tee fitting for a tube 18 mm, SS	-	-	In stock	Enquiry
HM-LM764L-20-SS	Tee fitting for a tube 20 mm, SS	-	-	In stock	Enquiry
HM-LM764L-22-SS	Tee fitting for a tube 22 mm, SS	-	-	In stock	Enquiry
HM-LM764L-25-SS	Tee fitting for a tube 25 mm, SS	-	-	In stock	Enquiry
HM-LM764L-38-SS	Tee fitting for a tube 38 mm, SS	-	-	In stock	Enquiry

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A LET-LOK® tee fitting for a metric tube intended mainly for the chemical, petrochemical and pharmaceutical industry, power generation, nuclear power plants and process engineering. The permissible working pressure is determined on the basis of the outer diameter and the wall thickness of the tube (details in the attachment). Material: steel AISI 316.