SAE J2888:2019 pdf free
SAE J2888:2019 pdf free.R-1234yf Service Hose, Fittings, and Couplers for Mobile Refrigerant Systems Service Equipment
A hose connected between the MAC high-side service ftting and the recovery equipment. It includes a high-side coupling,as defined in SAE J639, and at the shutoff device of the connection to the serviced system or equipment, an M12 X 1.5-6g male thread on both ends.
A hose connected between the MAC low-side service fiting and the recovery equipment. It includes a low-side coupling,as defined in SAE J639, and at shutoff device of the connection to the serviced system or equipment, an M12 x 1.5-6g male thread on both ends.
A hose connected between the R-1234yf supply cylinder and the service equipment (recovery/recycling recovery/recycle/charging unit). On one end, the supply hose shall have a compatible coupling per SAE J2844 to connect to the refrigerant supply cylinder. See Figure 2 and Table 1 The other end of the supply hose, if connected externally to the service equipment, shall contain an M12 x 1.5-6g male threaded connection.
A hose connected between components within or as part of service equipment. If the connection is made external to the unit, it shall be a wrench tight connection different than those described for the high-side, low-side service hose and supply hose as previously defined.
Charge Service couplings for high and low side shall meet the requirements and be compatible as defined in SAE J639. The charge service coupling shall be constructed to prevent discharge when decoupled and shall have a manual valve to actuate flow, this valve shall have a lock out feature that prevents actuation until the coupler is securely locked into place on the charge port.
The charge service coupling must be designed for sealing on the outer diameter of the charge port to prevent leakage due to variation in the charge port end configuration.SAE J2888 pdf free download.
