Can ORFS straight bulkhead nipple with UNF GZ in carbon steel, type SV be used with standard O-rings for a reliable flat-face seal?

Yes . the ORFS straight bulkhead nipple with UNF GZ in carbon steel, type SV can be used with standard O-rings for a reliable flat-face seal, provided the following conditions are met: - Use an O-ring sized to fit the groove in the flat face exactly (material and cross-section per the groove dimensions). - Select O-ring material compatible with the fluid, temperature, pressure, and galvanic environment (common choices: NBR for oils up to ~100Â°C, FKM for higher temps/chemical resistance, EPDM for water/glycols where compatible). - Ensure surface finish and flatness of the mating flat face meet sealing requirements (no deep scratches, burrs or warping). - Install the nipple so the O-ring sits fully in the groove and the flat faces compress the O-ring evenly; avoid over-compression or twisting. - Confirm the system pressure rating and dynamic/static conditions are within the O-ring material and gland design limits for ORFS flat-face connections. - For critical applications, follow manufacturer groove dimensions/tolerances and test under operating conditions. When these conditions are observed, the ORFS straight bulkhead nipple with UNF GZ in carbon steel, type SV provides a reliable flat-face seal using standard O-rings.

Can ORFS straight bulkhead nipple with UNF GZ in carbon steel, type SV be installed in corrosive environments without additional corrosion protection?

No. The ORFS straight bulkhead nipple with UNF GZ in carbon steel, type SV, made of galvanised carbon steel, is not suitable for prolonged use in corrosive environments without additional protection. Zinc galvanising offers limited corrosion resistance, but in aggressive media (chlorides, acids, alkaline, humidity, marine or industrial atmospheres) the coating will degrade, leading to steel corrosion and seal failure. For corrosive conditions use stainless steel variants or apply enhanced corrosion protection (thicker coatings, epoxy, corrosion inhibitors, cathodic protection) and follow regular inspection and maintenance.

Is ORFS straight bulkhead nipple with UNF GZ in carbon steel, type SV compatible with metric-threaded ports?

No. ORFS straight bulkhead nipple with UNF GZ in carbon steel, type SV is not compatible with metric-threaded ports. Explanation: - Thread standard: The part uses an external UNF (Unified Fine) thread (GZ), which follows imperial inch-based dimensions and thread pitch. Metric ports use ISO metric threads (Mâ¦), with different diameters, pitch, and thread form. These do not match mechanically. - Sealing method: The fitting is ORFS (O-Ring Face Seal). it seals on the flat face via an O-ring in a groove. Proper sealing requires a matching ORFS face on the mating port. Even if a metric port had a flat face, the thread mismatch prevents correct engagement and proper compression of the sealing face. - Material/finish irrelevant: Carbon steel, galvanized does not change mechanical incompatibility. Safe options: - Use a port with matching UNF ORFS female thread and ORFS face. - Use a dedicated adapter or reducer designed to convert the specific UNF/ORFS male to the required metric female port, ensuring thread type and seal face compatibility. - Replace the port or fitting with one specified for metric ORFS-compatible connections. Do not attempt to force-fit or chase threads. this risks leaks and mechanical failure.

ORFS straight bulkhead nipple with UNF GZ in carbon steel, type SV

Additional information

Material	CS – steel (cast iron)
Standard length [m]	2, 60/ 120

Straight partition fitting ORFS with external UNF thread (O-ring seal in the groove of the flat face), type SV. Material: carbon steel, galvanized.

List of product variants

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