Apartments sales keep on churning in a Phoenix market that continues to see complexes bought and sold and new units in the development pipeline. The latest sale is a $31.6 million purchase of a 248-unit complex in the Arrowhead section of Glendale. The Pavilions at Arrowhead sold for $127,00 per units. Marcus & Millichap’s Institutional Property Advisors brokered the Glendale sale between Capital Real Estate, the buyer, and Abacus Capital Group, the seller. M&M brokers Steve Gebing and Cliff…