1 ton R-12 External Equalizer Expansion Valve by Larry Benner $132.00 Category Cooling Location Pennsylvania 1 ton R-12 External Equalizer Expansion Valve. Price is per one valve available. Reference #LB528. Send Message Phone (717) 935-5051 Name * Email * Phone * Subject * Part#/DTCS/Ref# * Message * Captcha Captcha Website Address Big Larry