Is the Straight fitting with GZ NPT for metric tube, stainless steel, M768L compatible with aggressive media and suitable for use in nuclear and pharmaceutical installations?

Yes. The Straight fitting with GZ NPT for metric tube, stainless steel, M768L is compatible with aggressive media and suitable for use in nuclear and pharmaceutical installations, subject to correct selection and application: - Material: AISI 316 stainless steel offers good corrosion resistance to many aggressive chemicals and is commonly used in chemical, pharmaceutical and nuclear industries. - Design & standards: The LET-LOKÂ® straight coupling with external NPT thread is explicitly intended for chemical, petrochemical, pharmaceutical, energy, nuclear power and process engineering sectors. - Pressure rating: Allowable working pressure depends on the tubing outer diameter and wall thickness (refer to the provided pressure tables). Ensure the selected tube meets the required pressure and temperature conditions for the specific media and operating environment. - Application notes: Verify chemical compatibility of AISI 316 with the specific aggressive media, temperature and radiation conditions encountered in your installation. For nuclear applications, confirm any additional material, testing or qualification requirements (e.g., traceability, cleanliness, specific heat treatments, radiation resistance) mandated by regulations or project specifications. - Cleanliness & certification: For pharmaceutical use, ensure component cleanliness, surface finish, documentation and any required certifications (e.g., materials certificates, testing) meet GMP and client requirements. Conclusion: Technically suitable, but confirm tube dimensions, pressure/temperature limits, media compatibility and any industry-specific certification or qualification before installation.

Can the Straight fitting with GZ NPT for metric tube, stainless steel, M768L be used with high-pressure steam systems?

Straight fitting with GZ NPT for metric tube, stainless steel, M768L may be suitable for highâpressure steam systems only if the allowable working pressure for your specific tubing OD and wall thickness meets or exceeds the required steam system pressure at operating temperature. The fitting is AISI 316 stainless steel and intended for chemical, petrochemical, pharmaceutical, energy, nuclear and process industries, but its pressure rating depends on the tube dimensions (see attachment). For steam service also verify temperature limits of AISI 316 and joint sealing under thermal cycling, corrosion/oxidation at steam conditions, and compatibility with any system chemicals. If in doubt, consult the manufacturerâs detailed pressure tables and a qualified engineer for confirmation before use.

Does the Straight fitting with GZ NPT for metric tube, stainless steel, M768L meet ASME or EN pressure-rating standards?

Straight fitting with GZ NPT for metric tube, stainless steel, M768L does not explicitly state conformity to ASME or EN pressure-rating standards in the provided description. The product description specifies that allowable working pressure is determined from the tube outer diameter and wall thickness (details referenced in an attachment) and that material is AISI 316 stainless steelâinformation needed to calculate or verify pressure capabilityâbut it does not declare certification or compliance with specific standards such as ASME B31.1/B31.3, ASME Boiler & Pressure Vessel Code, or EN standards (e.g., EN 13445 or relevant EN couplings/pressure equipment directives). Conclusion: Based on the given description alone, you cannot assume formal compliance with ASME or EN pressure-rating standards. To confirm compliance you should request the manufacturerâs technical datasheet or certification showing: - explicit statement of applicable standard(s) (ASME/EN), - tested/guaranteed allowable working pressures tied to standards, - material and traceability certificates (e.g., EN 10204 3.1/3.2 or equivalent), - test reports (pressure tests, traceability) or CE/ PED declaration if applicable. If those documents show pressure ratings derived and certified per ASME or EN methods, the fitting can be considered compliant. Otherwise, use the provided OD/wall thickness pressure table only for engineering assessment, not as evidence of standard conformity.

Fitting straight with NPT male thread for a metric tube, steel stainless, M768L

All products, LET-LOK precision connectors/

Additional information

Material	SS – stainless steel

A LET-LOK® straight fitting with a thread external NPT 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-LM768L-02-02-SS	Fitting for a tube 2 mm - 1/8" NPT male, SS	-	-	In stock	Enquiry
HM-LM768L-03-02-SS	Fitting for a tube 3 mm - 1/8" NPT male, SS	-	-	In stock	Enquiry
HM-LM768L-03-04-SS	Fitting for a tube 3 mm - 1/4" NPT male, SS	-	-	In stock	Enquiry
HM-LM768L-04-02-SS	Fitting for a tube 4 mm - 1/8" NPT male, SS	-	-	In stock	Enquiry
HM-LM768L-04-04-SS	Fitting for a tube 4 mm - 1/4" NPT male, SS	-	-	In stock	Enquiry
HM-LM768L-06-02-SS	Fitting for a tube 6 mm - 1/8" NPT male, SS	-	-	In stock	Enquiry
HM-LM768L-06-04-SS	Fitting for a tube 6 mm - 1/4" NPT male, SS	-	-	In stock	Enquiry
HM-LM768L-06-06-SS	Fitting for a tube 6 mm - 3/8" NPT male, SS	-	-	In stock	Enquiry
HM-LM768L-06-08-SS	Fitting for a tube 6 mm - 1/2" NPT male, SS	-	-	In stock	Enquiry
HM-LM768L-08-02-SS	Fitting for a tube 8 mm - 1/8" NPT male, SS	-	-	In stock	Enquiry
HM-LM768L-08-04-SS	Fitting for a tube 8 mm - 1/4" NPT male, SS	-	-	In stock	Enquiry
HM-LM768L-08-06-SS	Fitting for a tube 8 mm - 3/8" NPT male, SS	-	-	In stock	Enquiry
HM-LM768L-08-08-SS	Fitting for a tube 8 mm - 1/2" NPT male, SS	-	-	In stock	Enquiry
HM-LM768L-10-02-SS	Fitting for a tube 10 mm - 1/8" NPT male, SS	-	-	In stock	Enquiry
HM-LM768L-10-04-SS	Fitting for a tube 10 mm - 1/4" NPT male, SS	-	-	In stock	Enquiry
HM-LM768L-10-06-SS	Fitting for a tube 10 mm - 3/8" NPT male, SS	-	-	In stock	Enquiry
HM-LM768L-10-08-SS	Fitting for a tube 10 mm - 1/2" NPT male, SS	-	-	In stock	Enquiry
HM-LM768L-10-12-SS	Fitting for a tube 10 mm - 3/4" NPT male, SS	-	-	In stock	Enquiry
HM-LM768L-12-02-SS	Fitting for a tube 12 mm - 1/8" NPT male, SS	-	-	In stock	Enquiry
HM-LM768L-12-04-SS	Fitting for a tube 12 mm - 1/4" NPT male, SS	-	-	In stock	Enquiry
HM-LM768L-12-06-SS	Fitting for a tube 12 mm - 3/8" NPT male, SS	-	-	In stock	Enquiry
HM-LM768L-12-08-SS	Fitting for a tube 12 mm - 1/2" NPT male, SS	-	-	In stock	Enquiry
HM-LM768L-12-12-SS	Fitting for a tube 12 mm - 3/4" NPT male, SS	-	-	In stock	Enquiry
HM-LM768L-14-04-SS	Fitting for a tube 14 mm - 1/4" NPT male, SS	-	-	In stock	Enquiry
HM-LM768L-14-06-SS	Fitting for a tube 14 mm - 3/8" NPT male, SS	-	-	In stock	Enquiry
HM-LM768L-14-08-SS	Fitting for a tube 14 mm - 1/2" NPT male, SS	-	-	In stock	Enquiry
HM-LM768L-15-08-SS	Fitting for a tube 15 mm - 1/2" NPT male, SS	-	-	In stock	Enquiry
HM-LM768L-16-06-SS	Fitting for a tube 16 mm - 3/8" NPT male, SS	-	-	In stock	Enquiry
HM-LM768L-16-08-SS	Fitting for a tube 16 mm - 1/2" NPT male, SS	-	-	In stock	Enquiry
HM-LM768L-16-12-SS	Fitting for a tube 16 mm - 3/4" NPT male, SS	-	-	In stock	Enquiry
HM-LM768L-18-06-SS	Fitting for a tube 18 mm - 3/8" NPT male, SS	-	-	In stock	Enquiry
HM-LM768L-18-08-SS	Fitting for a tube 18 mm - 1/2" NPT male, SS	-	-	In stock	Enquiry
HM-LM768L-18-12-SS	Fitting for a tube 18 mm - 3/4" NPT male, SS	-	-	In stock	Enquiry
HM-LM768L-20-08-SS	Fitting for a tube 20 mm - 1/2" NPT male, SS	-	-	In stock	Enquiry
HM-LM768L-20-12-SS	Fitting for a tube 20 mm - 3/4" NPT male, SS	-	-	In stock	Enquiry
HM-LM768L-22-12-SS	Fitting for a tube 22 mm - 3/4" NPT male, SS	-	-	In stock	Enquiry
HM-LM768L-22-16-SS	Fitting for a tube 22 mm - 1" NPT male, SS	-	-	In stock	Enquiry
HM-LM768L-25-08-SS	Fitting for a tube 25 mm - 1/2" NPT male, SS	-	-	In stock	Enquiry
HM-LM768L-25-12-SS	Fitting for a tube 25 mm - 3/4" NPT male, SS	-	-	In stock	Enquiry
HM-LM768L-25-16-SS	Fitting for a tube 25 mm - 1" NPT male, SS	-	-	In stock	Enquiry
HM-LM768L-38-24-SS	Fitting for a tube 38 mm - 1.1/2" NPT male, SS	-	-	In stock	Enquiry

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A LET-LOK® straight fitting with a thread external NPT 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.