Is the Walterscheidâ¢ EVGEO-NT adjustable screw connection, carbon steel, compatible with NPT sealing using PTFE tape or anaerobic sealant while maintaining the 2.5:1 safety factor?

Yes. The Walterscheidâ¢ EVGEO-NT adjustable screw connection, carbon steel is specified with an external NPT thread and the description explicitly states "seal on the thread â with Teflon tape or anaerobic sealant." Using PTFE (Teflon) tape or an anaerobic thread sealant on the NPT thread is therefore compatible with the fittingâs intended sealing method. Regarding the 2.5:1 safety factor: the declared safety factor (2.5:1) applies to the fitting design and materials (carbon steel, Guardian Sealâ¢ coating) when assembled per manufacturer instructions. Using PTFE tape or an approved anaerobic sealant on the external NPT thread does not inherently reduce the mechanical strength or the rated safety factor, provided: - Assembly torque and installation procedure follow Eaton/Walterscheidâs recommendations (no over-tightening or under-tightening). - A sealant appropriate for hydraulic service and compatible with system fluids and temperatures is used. - The fitting is used within its rated pressure/temperature and application limits. If you need absolute confirmation for a critical application, consult Eaton/Walterscheid technical documentation or contact their technical support with your specific fluid, temperature and torque details.

Can the Walterscheidâ¢ EVGEO-NT adjustable screw connection, carbon steel, use NPT thread sealing methods (PTFE tape/anaerobic) without affecting the 2.5:1 safety factor?

Yes. The Walterscheidâ¢ EVGEO-NT adjustable screw connection, carbon steel is specified as having an external NPT thread with sealing on the thread (PTFE/Teflon tape or anaerobic sealant) and a declared safety factor of 2.5:1. Using NPT thread sealing methods (PTFE tape or anaerobic thread sealant) is consistent with the product description and its intended sealing method. When installed per manufacturer guidelines (correct thread engagement, proper sealing technique, and recommended torque), these thread sealants do not alter the stated 2.5:1 safety factor. Always follow Eaton/Walterscheid installation instructions and applicable standards to preserve rated safety margins.

Does the Walterscheidâ¢ EVGEO-NT adjustable screw connection, carbon steel, require additional torque when NPT threads are sealed with PTFE tape or anaerobic sealant?

No. When NPT threads of the Walterscheidâ¢ EVGEO-NT adjustable screw connection, carbon steel, are sealed with PTFE (Teflon) tape or an anaerobic thread sealant, no additional torque beyond the manufacturerâs specified assembly torque should be applied to compensate for the sealant. The EVGEO-NT is designed with a 24Â° DIN 2353 socket and O-ring for the primary sealing function and uses the NPT thread sealant solely to prevent external leakage along the threads; over-torquing can damage the 24Â° seat, distort the fitting, reduce clamping effectiveness, or compromise the O-ring seal. Follow Eaton/Walterscheid recommended tightening procedure and torque values for the specific series (L or S) and size, and allow anaerobic sealants to cure per manufacturer instructions before pressurizing.

Walterscheid™ EVGEO-NT adjustable screw connection, carbon steel

Additional information

Material	CS – steel (cast iron)

DIN 2353 Eaton Walterscheid™ adjustable screw fitting, type EVGEO-NT: 24° DIN 2353 socket with O-ring, with internal metric thread and external NPT thread (seal on the thread – with Teflon tape or anaerobic sealant). Safety factor 2.5:1. Available as: L (light series), S (heavy series). Material: carbon steel, with Guardian Seal™ galvanic coating.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
HD-EVGEO-06L-NT-02-W	Walterscheid fitting DIN 2353 EVGEO 6L 1/8" NPT	-	500	In stock	Enquiry
HD-EVGEO-06S-NT-04-W	Walterscheid fitting DIN 2353 EVGEO 6S 1/4" NPT	-	800	In stock	Enquiry
HD-EVGEO-08L-NT-04-W	Walterscheid fitting DIN 2353 EVGEO 8L 1/4" NPT	-	500	In stock	Enquiry
HD-EVGEO-08S-NT-04-W	Walterscheid fitting DIN 2353 EVGEO 8S 1/4" NPT	-	800	In stock	Enquiry
HD-EVGEO-10L-NT-04-W	Walterscheid fitting DIN 2353 EVGEO 10L 1/4" NPT	-	500	In stock	Enquiry
HD-EVGEO-10S-NT-06-W	Walterscheid fitting DIN 2353 EVGEO 10S 3/8" NPT	-	800	In stock	Enquiry
HD-EVGEO-12L-NT-06-W	Walterscheid fitting DIN 2353 EVGEO 12L 3/8" NPT	-	400	In stock	Enquiry
HD-EVGEO-12S-NT-06-W	Walterscheid fitting DIN 2353 EVGEO 12S 3/8" NPT	-	630	In stock	Enquiry
HD-EVGEO-15L-NT-08-W	Walterscheid fitting DIN 2353 EVGEO 15L 1/2" NPT	-	400	In stock	Enquiry
HD-EVGEO-16S-NT-08-W	Walterscheid fitting DIN 2353 EVGEO 16S 1/2" NPT	-	630	In stock	Enquiry
HD-EVGEO-18L-NT-08-W	Walterscheid fitting DIN 2353 EVGEO 18L 1/2" NPT	-	400	In stock	Enquiry
HD-EVGEO-20S-NT-12-W	Walterscheid fitting DIN 2353 EVGEO 20S 3/4" NPT	-	420	In stock	Enquiry
HD-EVGEO-22L-NT-12-W	Walterscheid fitting DIN 2353 EVGEO 22L 3/4" NPT	-	250	In stock	Enquiry
HD-EVGEO-25S-NT-16-W	Walterscheid fitting DIN 2353 EVGEO 25S 1" NPT	-	420	In stock	Enquiry
HD-EVGEO-28L-NT-16-W	Walterscheid fitting DIN 2353 EVGEO 28L 1" NPT	-	250	In stock	Enquiry
HD-EVGEO-30S-NT-20-W	Walterscheid fitting DIN 2353 EVGEO 30S 1.1/4" NPT	-	400	In stock	Enquiry
HD-EVGEO-35L-NT-20-W	Walterscheid fitting DIN 2353 EVGEO 35L 1.1/4" NPT	-	250	In stock	Enquiry
HD-EVGEO-38S-NT-24-W	Walterscheid fitting DIN 2353 EVGEO 38S 1.1/2" NPT	-	400	In stock	Enquiry
HD-EVGEO-42L-NT-24-W	Walterscheid fitting DIN 2353 EVGEO 42L 1.1/2" NPT	-	250	In stock	Enquiry

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DIN 2353 Eaton Walterscheid™ adjustable screw fitting, type EVGEO-NT: 24° DIN 2353 socket with O-ring, with internal metric thread and external NPT thread (seal on the thread – with Teflon tape or anaerobic sealant). Safety factor 2.5:1. Available as: L (light series), S (heavy series). Material: carbon steel, with Guardian Seal™ galvanic coating.