Description Volvo Expansion Valve Replaces OEM: 4379-RD99350P Application: Volvo Description: Expansion Valve Block Standard Rating: 2 Ton Mount Type: Block Type Port Type: M10 & M12 Refrigerant Type: R12/R134a O-Ring #1: 0011/0015 O-Ring #2: 0013/0015 House Inlet Size: #6 House Outlet Size: #10 Evaporator Inlet Size: #8 Evaporator Outlet Size: #10 Notes: w/ 2 Service Ports M10 – 1.25 x M12 – 1.5 Liquid Inlet from Condenser: #6 – 3/8″ Liquid Outlet to Evaporator: #8 – 1/2″ Suction Inlet from Evaporator: #10 – 5/8″ Suction Outlet to Compressor: #10 – 5/8″