Is the Tee fitting "L" with GW/GZ UNF in carbon steel, type EVL compatible with standard UNF threaded adapters and O-ring sealing?

Yes. The Tee fitting "L" with GW/GZ UNF in carbon steel, type EVL is compatible with standard UNF threaded adapters and Oâring sealing, provided mating parts meet the same UNF thread form and dimensions and the Oâring groove and front sealing face conform to the corresponding seal geometry. Key points: - External UNF thread: designed to engage standard UNF internal threads on adapters; ensure thread size, pitch and class match. - Front surface sealing with Oâring: the fitting has an Oâring in a groove on the flat front surface, so compatibility requires the mating face to be flat and provide a proper counterface for compression of the Oâring; groove and Oâring material must suit operating pressure, temperature and fluid. - Material and finish: carbon steel, galvanized . verify corrosion and galvanization compatibility with mating materials and seals. - Installation: use correct torque to avoid thread damage and achieve proper Oâring compression; verify thread sealant is compatible with Oâring if used. If thread sizes/classes, groove dimensions or operating conditions are uncertain, confirm with dimensional drawings or supplier specifications before assembly.

Can the Tee fitting "L" with GW/GZ UNF in carbon steel, type EVL handle high-pressure hydraulic systems with front-surface O-ring sealing?

Tee fitting "L" with GW/GZ UNF in carbon steel, type EVL can be used in highâpressure hydraulic systems provided the following conditions are met: the frontâsurface Oâring sealing is correctly sized and compatible with the hydraulic fluid and temperature; the UNF threads and Oâring groove are manufactured to the required tolerances; the carbon steel material and galvanization meet the systemâs pressure and corrosion requirements; and assembly torque and surface finish ensure proper Oâring compression. If manufacturer pressure ratings and testing certificates for type EVL confirm suitability for the intended maximum system pressure and dynamic conditions, it is acceptable; without such ratings, do not use it in highâpressure applications.

Does Tee fitting "L" with GW/GZ UNF in carbon steel, type EVL require specific O-ring materials for galvanic environments?

Yes. Tee fitting "L" with GW/GZ UNF in carbon steel, type EVL used in galvanic (galvanized) environments typically requires careful selection of Oâring material to avoid accelerated degradation from galvanic corrosion, chemical exposure, or temperature effects. Common recommendations: - NBR (Nitrile): Good general-purpose choice for oil/hydraulic applications, moderate resistance to fuels and oils, temperature range roughly -30Â°C to +100Â°C. Acceptable for many galvanic systems but not optimal if aggressive chemicals or higher temperatures are present. - FKM/Viton: Superior chemical and temperature resistance (approx. -20Â°C to +200Â°C). Better for harsher galvanic environments, hydraulic fluids, and higher temperatures; more expensive. - EPDM: Good for water, steam, glycol; poor resistance to oils and fuels. Use only if media are aqueous and compatible with EPDM. - HNBR: Improved temperature and chemical resistance vs. NBR; good for demanding hydraulic applications. - PTFE (or PTFEâencapsulated elastomers): For extreme chemical compatibility; consider for aggressive galvanic/corrosive conditions. Also consider: - Avoid dissimilar metal combinations at seals that could promote galvanic corrosion; ensure proper plating/passivation of carbon steel and compatible mating materials. - Use corrosion-resistant backing or seal designs if electrical continuity could cause galvanic cells. - Confirm media, pressure, and temperature to select correct compound and hardness (durometer). - If in doubt, choose FKM or HNBR for long-term reliability in galvanized environments. Final step: verify with supplier/manufacturer material datasheets and system compatibility tests for Tee fitting "L" with GW/GZ UNF in carbon steel, type EVL.

Tee fitting “L” with GW/GZ UNF in carbon steel, type EVL

Additional information

Material	CS – steel (cast iron)
Standard length [m]	120

L-shaped tee fitting with internal thread (sealing on the front surface) and external UNF thread (o-ring in the groove of the flat front surface), type EVL. Material: carbon steel, galvanized.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
HO-EVL-09	L-shaped tee GW ORFS 9/16"-18 - GZ ORFS 9/16"-18	-	630	In stock	Enquiry
HO-EVL-11	L-shaped tee GW ORFS 11/16"-16 - GZ ORFS 11/16"-16	-	630	In stock	Enquiry
HO-EVL-13	L-shaped tee GW ORFS 13/16"-16 - GZ ORFS 13/16"-16	-	630	In stock	Enquiry
HO-EVL-16	L-shaped tee GW ORFS 1"-14 - GZ ORFS 1"-14	-	420	In stock	Enquiry
HO-EVL-19	L tee GW ORFS 1.3/16"-12 - GZ ORFS 1.3/16"-12	-	420	In stock	Enquiry
HO-EVL-23	L-shaped tee GW ORFS 1.7/16"-12 - GZ ORFS 1.7/16"-12	-	420	In stock	Enquiry
HO-EVL-27	L-shaped tee GW ORFS 1.11/16"-12 - GZ ORFS 1.11/16"-12	-	280	In stock	Enquiry
HO-EVL-32	L-shaped tee GW ORFS 2"-12 - GZ ORFS 2"-12	-	280	In stock	Enquiry

Do you need a larger quantity of products or a bespoke quote?

Call us: +48 61 653 02 22 or email us: tubes@tubes-international.com

SEND ENQUIRY

L-shaped tee fitting with internal thread (sealing on the front surface) and external UNF thread (o-ring in the groove of the flat front surface), type EVL. Material: carbon steel, galvanized.