Is the JIC "L" non-symmetrical adjustable tee fitting with GZ/GW UNF in carbon steel, type EVL compatible with standard 37Â° cone nut seals after galvanizing?

Yes . the JIC "L" non-symmetrical adjustable tee fitting with GZ/GW UNF in carbon steel, type EVL is compatible with standard 37Â° cone nut seals after galvanizing, provided the following conditions are met: - The mating cone nuts and cones comply with JIC 37Â° geometry tolerances so proper metal-to-metal contact is possible despite the zinc coating. - Galvanizing thickness is controlled (thin, uniform zinc layer) or parts are post-machined/turning of sealing surfaces to restore correct 37Â° cone dimensions and surface finish. Excessive or uneven galvanizing can prevent proper sealing. - Threads maintain required tolerances after galvanizing or are reworked (chased) to ensure correct engagement with UNF nuts. - No significant build-up or roughness exists on the sealing or thread faces; sealing surfaces should be free of heavy zinc deposits, burrs or contamination. - Assembly uses correct torque values and, if required, anti-seize/compatibility lubricants suitable for galvanized steel to avoid galling while preserving seal integrity. If these precautions are observed, the type EVL fitting will form a reliable 37Â° metal-to-metal seal with standard cone nuts after galvanizing.

Does the JIC "L" non-symmetrical adjustable tee fitting with GZ/GW UNF in carbon steel, type EVL require special torque after galvanizing to maintain the 37Â° cone nut seal?

No. The JIC "L" non-symmetrical adjustable tee fitting with GZ/GW UNF in carbon steel, type EVL does not require any special additional torque after galvanizing to maintain the 37Â° cone nut seal. Standard assembly torque for the UNF JIC 37Â° cone connection should be applied to achieve proper metal-to-metal sealing; over-torquing must be avoided. Ensure threads and cone faces are clean, undamaged and compatible with the nut, and follow manufacturerâs recommended torque values for the specific size and thread to ensure leak-free performance.

Can the JIC "L" non-symmetrical adjustable tee fitting with GZ/GW UNF in carbon steel, type EVL be reworked if galvanizing affects the 37Â° cone sealing surface?

Yes. the JIC "L" non-symmetrical adjustable tee fitting with GZ/GW UNF in carbon steel, type EVL can be reworked if galvanizing has affected the 37Â° cone sealing surface, but only with strict controls and appropriate methods to restore the sealing geometry and surface finish. Key considerations and recommended actions: - Inspection: verify extent of galvanizing build-up, roughness, and any distortion or pitting on the 37Â° cone. Measure cone angle and seating diameter to confirm they remain within acceptable tolerances. - Removal method: remove excess zinc and defects by controlled mechanical polishing (fine abrasive or lapping) or chemical stripping suitable for carbon steel without altering cone angle. Avoid coarse grinding or aggressive machining that changes cone geometry. - Surface finish: restore a smooth, defect-free finish compatible with JIC 37Â° metal-to-metal sealing (typically low Ra value). Final polishing/lapping to produce an even, continuous sealing surface is required. - Dimensional control: maintain original cone angle (37Â°) and seating diameter; rework must not reduce material below design limits. If material removal changes critical dimensions, the fitting must be rejected. - Thread and joint integrity: protect and inspect UNF threads and nut; re-tap or repair threads only if within allowable limits and using compatible methods. - Coating compatibility: after rework, do not reapply galvanizing to the sealing surface. If corrosion protection is required, use localized protective measures that do not interfere with metal-to-metal sealing (e.g., anti-seize on threads only, or selective coating away from sealing face). - Testing: perform leak testing (pressure and/or assembly leakage checks) after rework to confirm sealing performance under expected conditions. - Traceability and limits: document rework, methods, and measurements. If the fitting is pressure-critical, safety-critical, or part of certified equipment, follow manufacturer or authority guidelines. many OEMs or standards bodies may prohibit rework of sealing faces or require replacement. Conclusion: Rework is possible when only galvanizing deposits or minor surface defects are present and can be removed without altering the 37Â° cone geometry or reducing material below acceptable limits. If the cone angle, seating diameter, or surface integrity cannot be fully restored and verified, replace the fitting.

JIC “L” non-symmetrical adjustable tee fitting with GZ/GW UNF in carbon steel, type EVL

Additional information

Material	CS – steel (cast iron)

Adjustable asymmetrical “L” tee fitting with external thread and internal UNF thread, nut (seal on 37° cone). Material: carbon steel, galvanized.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
HJ-EVL-07	Adjustable connector, "L" tee, GZ/GW JIC 7/16"-20	-	450	In stock	Enquiry
HJ-EVL-08	Adjustable fitting, "L" tee, GZ/GW JIC 1/2"-20	-	450	In stock	Enquiry
HJ-EVL-09	Adjustable fitting, "L" tee, GZ/GW JIC 9/16"-18	-	350	In stock	Enquiry
HJ-EVL-12	Adjustable fitting, "L" tee, GZ/GW JIC 3/4"-16	-	350	In stock	Enquiry
HJ-EVL-14	Adjustable fitting, "L" tee, GZ/GW JIC 7/8"-14	-	350	In stock	Enquiry
HJ-EVL-17	Adjustable fitting, "L" tee, GZ/GW JIC 1.1/16"-12	-	350	In stock	Enquiry
HJ-EVL-21	Adjustable fitting, "L" tee, GZ/GW JIC 1.5/16"-12	-	290	In stock	Enquiry
HJ-EVL-26	Adjustable fitting, "L" tee, GZ/GW JIC 1.5/8"-12	-	240	In stock	Enquiry
HJ-EVL-30	Adjustable connector tee "L", GZ/GW JIC 1.7/8"-12	-	240	In stock	Enquiry