Is the Straight fitting with NPT GZ to inch tube, brass, C768L compatible with stainless steel tubing of different outer diameters and wall thicknesses under the specified allowable working pressures?

Yes . Straight fitting with NPT GZ to inch tube, brass, C768L can be compatible with stainless steel tubing of different outer diameters and wall thicknesses, provided the tubing falls within the allowable working pressure limits specified for each OD and wall thickness. The product description states that allowable working pressure is determined based on the tubing outer diameter and wall thickness (see attachment). Therefore compatibility is conditional on: - The stainless steel tube OD and wall thickness matching one of the size/pressure combinations listed in the allowable working pressure table for the Straight fitting with NPT GZ to inch tube, brass, C768L. - The allowable working pressure for that tube geometry being equal to or greater than the maximum system pressure under actual service conditions (including temperature, dynamic loads and safety margins). - Material compatibility: brass fitting on stainless steel tubing is commonly used, but consider galvanic corrosion risk in the specific media and environment; select suitable alloys or protective measures if needed. - Proper installation: correct tubing preparation, insertion depth, and torque per manufacturer instructions to achieve rated performance. If your stainless steel tube dimensions and service pressure match the table values in the attachment and installation guidelines are followed, the fitting is compatible. If uncertain, provide the tube OD, wall thickness, material grade and system pressure/temperature for a definitive check.

Can Straight fitting with NPT GZ to inch tube, brass, C768L be used with tubing in high-temperature chemical or nuclear applications under specified pressure limits?

Yes, Straight fitting with NPT GZ to inch tube, brass, C768L Format can be used in high-temperature chemical or nuclear applications only if all of the following conditions are met: 1) the allowable working pressure (per the tubing OD and wall thickness table) at the application temperature is not exceeded; 2) the maximum service temperature and chemical compatibility of brass C768L are acceptable for the specific fluids and temperatures involved (brass has limited resistance to ammonia, some acids, and high-temperature dezincification risks); 3) nuclear-industry acceptance and any required material certifications are satisfied. If any of these are not met, choose a more suitable material (e.g., stainless steel) or consult the manufacturer/engineering authority for qualification.

Can Straight fitting with NPT GZ to inch tube, brass, C768L be used with tubes containing aggressive chemicals without corrosion risk?

No. Straight fitting with NPT GZ to inch tube, brass, C768L should not be assumed safe for use with aggressive chemicals without a specific compatibility check. Why: - Material is brass (C768L). Brass is an alloy of copper and zinc; it offers good mechanical properties and machinability but is susceptible to corrosion and dezincification when exposed to many aggressive media (strong acids, alkalis, ammonia, some chlorides and sulfates, hydrogen sulfide, amines, and certain solvents). - The product description indicates intended use in chemical, petrochemical, pharmaceutical, energy and nuclear industries, and gives pressure ratings based on tube OD and wall thickness. but it does not state chemical resistance or corrosion allowances. - Aggressive chemicals can attack brass even under static or dynamic conditions and at elevated temperatures or pressures; this can cause loss of strength, leaks, or embrittlement. Recommendation: - Identify the exact chemical(s), concentrations, temperatures and pressures the system will see. - Consult chemical compatibility charts for C768L/brass and/or the manufacturerâs corrosion data for Straight fitting with NPT GZ to inch tube, brass, C768L. - For doubtful or critical applications, consider more resistant materials (e.g., stainless steels such as 316/316L, duplex, or nickel alloys like Monel/Inconel) or non-metallic linings/seals compatible with the chemical. - Perform or request supplier validation (corrosion tests, long-term exposure data) and ensure applicable industry standards and safety margins are met. Conclusion: Do not use Straight fitting with NPT GZ to inch tube, brass, C768L with aggressive chemicals without confirming compatibility and suitability for the specific chemical environment.

Fitting straight with NPT male thread for an inch tube, brass, C768L

All products, LET-LOK precision connectors/

Additional information

Material	B – brass (bronze)

A LET-LOK® straight fitting with a thread external NPT for an inch 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: brass.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
HM-LC768L-02-02-B	Fitting for a tube 1/8" - 1/8" NPT male, brass	-	345	In stock	Enquiry
HM-LC768L-02-04-B	Fitting for a tube 1/8" - 1/4" NPT male, brass	-	276	In stock	Enquiry
HM-LC768L-04-04-B	Fitting for a tube 1/4" - 1/4" NPT male, brass	-	276	In stock	Enquiry
HM-LC768L-06-04-B	Fitting for a tube 3/8" - 1/4" NPT male, brass	-	276	In stock	Enquiry

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A LET-LOK® straight fitting with a thread external NPT for an inch 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: brass.