... RHAM: Stationary Heavy Wall Barrel, Top Anchor, Mechanic Seating, Rod Pump 2) RHBM: Stationary Heavy Wall Barrel, Bottom Anchor, Mechanic ... Wall Barrel, Bottom Anchor, Rod Pump 8) RWT: Traveling Thin Wall Barrel, Bottom Anchor, Rod Pump 9) RSA: Stationary Thin Wall ... Barrel, Top Anchor, Soft-packed Plunger, Rod Pump 10) RSB: Stationary ...