Does the JIC pressure gauge connection with GW BSP in carbon steel, type MAV require a specific torque for metal washer sealing during installation?

Yes. The JIC pressure gauge connection with GW BSP in carbon steel, type MAV requires a specific tightening procedure for reliable metal-washer (copper or similar) sealing. Because the sealing depends on controlled deformation of the metal washer between the flat face of the BSP port and the connector, assembly must achieve sufficient compressive torque to flatten the washer and form a leak-tight metal-to-metal seal without overâcompressing and damaging the washer or threads. Recommended practice: - Use a calibrated torque wrench and tighten to the manufacturerâs specified torque value. If the MAV datasheet is available, follow its exact torque figure. - If no specific value is supplied, typical metal-washer sealing torques for similar carbon-steel JIC/BSP gauge fittings are in the range of approximately 15â30 Nm for small sizes (e.g., 1/4"â1/2"), increasing with thread size. Start at the lower end, inspect for leakage, and incrementally tighten as needed. - Always use correct washer type and condition (clean, undamaged, correct material/thickness). Ensure threads and sealing faces are clean and free of burrs. - Avoid using thread sealants on the washer face; threadlocker on threads is unnecessary and can interfere with metal-to-metal sealing. - After initial tightening, bring the system to operating pressure and re-check for leaks; retorque if required within safe limits. If precise assembly torque is critical for your application, obtain the MAV product datasheet or contact the manufacturer for the exact torque specification.

Can the JIC pressure gauge connection with GW BSP in carbon steel, type MAV be installed without a backup washer for metal sealing?

No. The JIC pressure gauge connection with GW BSP in carbon steel, type MAV (Straight pressure gauge connector JIC37Â° with internal BSP thread. sealing with a metal washer) is designed to achieve a metal-to-metal seal using the included metal washer. Installing it without the backup/metal washer risks improper sealing, potential leaks, and damage to the mating surfaces because the JIC 37Â° cone and the BSP internal thread rely on the washer to ensure correct contact geometry and sealing pressure. For reliable, leak-free service and to maintain the connectorâs rated performance in carbon steel (galvanized), always fit the specified metal washer and torque to the manufacturerâs recommendations.

JIC pressure gauge connection with GW BSP in carbon steel, type MAV

Q: Is a specific washer material required for the JIC pressure gauge connection with GW BSP in carbon steel, type MAV to ensure metal-to-metal sealing?

For the JIC pressure gauge connection with GW BSP in carbon steel, type MAV, no special washer material is required beyond the metal washer specified: the connector is designed for metal-to-metal sealing using the included metal washer (carbon steel, galvanized). Ensure the washer is intact, correctly seated, and compatible with the carbon steel connector to maintain sealing and corrosion protection; replacement washers should be metal and match the connectorâs dimensions and galvanization to preserve performance.

Additional information

Material	CS – steel (cast iron)

Straight pressure gauge connector JIC37° with internal BSP thread (sealing with a metal washer), type MAV. Material: carbon steel, galvanized.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
HJ-MAV-07-04	Manometer fitting GZ JIC 7/16"-20 / GW BSP 1/4"	-	350	In stock	Enquiry
HJ-MAV-07-08	Manometer fitting GZ JIC 7/16"-20 / GW BSP 1/2"	-	350	In stock	Enquiry
HJ-MAV-08-04	Manometer fitting GZ JIC 1/2"-20 / GW BSP 1/4"	-	350	In stock	Enquiry
HJ-MAV-08-08	Manometer fitting GZ JIC 1/2"-20 / GW BSP 1/2"	-	350	In stock	Enquiry
HJ-MAV-09-04	Manometer fitting. GZ JIC 9/16"-18 / GW BSP 1/4"	-	350	In stock	Enquiry
HJ-MAV-09-08	Manometer fitting GZ JIC 9/16"-18 / GW BSP 1/2"	-	350	In stock	Enquiry
HJ-MAV-12-04	Manometer fitting GZ JIC 3/4"-16 / GW BSP 1/4"	-	350	In stock	Enquiry
HJ-MAV-12-08	Manometer fitting GZ JIC 3/4"-16 / GW BSP 1/2"	-	350	In stock	Enquiry