Is the 90° Stainless Steel Adapter GZ NPT to GW NPT, Type A307 compatible with other NPT fittings and thread sealants?

Yes. The 90° Stainless Steel Adapter GZ NPT to GW NPT, Type A307 is compatible with other NPT fittings and thread sealants. It features both an external (male) NPT thread and an internal (female) NPT thread with thread seal surfaces, so it will mate correctly with standard NPT male and female fittings. Made from AISI 316L stainless steel and designed for high-pressure industrial use, it is suitable for typical thread sealants used on NPT threads (e.g., PTFE tape or pipe dope) to ensure leak-free connections. As with any installation, follow recommended torque and sealing practices and ensure mating fittings and sealants are appropriate for your system’s pressure, temperature, and media.

Can the 90° Stainless Steel Adapter GZ NPT to GW NPT, Type A307 withstand corrosive marine environments without additional protective coatings?

The 90° Stainless Steel Adapter GZ NPT to GW NPT, Type A307, is manufactured from AISI 316L stainless steel, which provides excellent intrinsic corrosion resistance, especially against chloride-containing environments typical of marine settings. For many marine applications—exposed freshwater, splash zones, and internal systems—316L will offer long-term durability without additional coatings. However, in highly aggressive marine conditions (continuous immersion in seawater, splash zones with heavy salt deposition, or environments with high temperature, acids, or industrial pollutants), even 316L can suffer pitting, crevice corrosion, or stress-corrosion cracking over extended service life. For maximum longevity under those severe conditions, additional protective measures (e.g., specialized coatings, cathodic protection, or design features to avoid crevices and retain moisture) and routine inspection/maintenance are recommended. Conclusion: The A307 can withstand many corrosive marine environments without extra coatings thanks to AISI 316L, but for continuous seawater exposure or very aggressive conditions, additional protection and regular inspection are advisable.

Adapter 90° with a male NPT thread/NPT female, steel stainless, type A307

All products, High-pressure adapters/

Additional information

Material	SS – stainless steel
Standard length [m]	2

High-pressure 90° adapter type A307 with thread external NPT (sealing on the thread) and with thread internal NPT (sealing on the thread). Material: steel AISI 316L.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
TI-A307-02-02-SS	Adapter 90° 1/8" NPT male / 1/8" NPT female, AISI 316	-	345	In stock	Enquiry
TI-A307-04-04-SS	Adapter 90° 1/4" NPT male / 1/4" NPT female, AISI 316	-	345	In stock	Enquiry
TI-A307-06-06-SS	Adapter 90° 3/8" NPT male / 3/8" NPT female, AISI 316	-	276	In stock	Enquiry
TI-A307-08-08-SS	Adapter 90° 1/2" NPT male / 1/2" NPT female, AISI 316	-	241	In stock	Enquiry
TI-A307-12-12-SS	Adapter 90° 3/4" NPT male / 3/4" NPT female, AISI 316	-	155	In stock	Enquiry
TI-A307-16-16-SS	Adapter 90° 1" NPT male / 1" NPT female, AISI 316	-	138	In stock	Enquiry
TI-A307-20-20-SS	Adapter 90° 1.1/4" NPT male / 1.1/4" NPT female, AISI 316	-	112	In stock	Enquiry

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High-pressure 90° adapter type A307 with thread external NPT (sealing on the thread) and with thread internal NPT (sealing on the thread). Material: steel AISI 316L.