This 2011 Appco oilfield trailer — also referred to as a sand storage pig or dry bulk tank trailer — is a purpose-built piece of oilfield equipment designed to store and discharge proppant materials such as frac sand at well sites. Units of this type serve as a central component of hydraulic fracturing operations, providing high-capacity on-site storage with the ability to feed sand directly into blending or pumping equipment via an integrated conveyor system.
The trailer is rated at 4,000 cubic feet of total storage capacity, distributed across four proppant compartments separated by corrugated sidewalls. Material is discharged through a rear-mounted discharge chute and carried by a 24-inch underbody conveyor belt. The conveyor system is driven by a Caterpillar C4.4 diesel engine, which had accumulated 3,611 hours at the time of listing — a relatively modest figure for this class of equipment. The Caterpillar C4.4 is a well-regarded four-cylinder industrial diesel commonly used in auxiliary power applications on oilfield equipment.
The trailer is equipped with a self-contained hydraulic system powering several key functions, including hydraulic leveling, hydraulic landing gear, and hydraulic controls throughout. A dedicated hydraulic power pack supports these systems, allowing the unit to operate independently without an external hydraulic source. Suspension is provided by a conventional spring suspension arrangement, and the trailer rolls on aluminum wheels fitted with 11R 22.5 tires. The gross vehicle weight rating is 55,000 kg (121,250 lbs).
Multiple units of this configuration are available, all in used condition and located in New York, USA.
This description was generated automatically from the listing details and may not reflect every specification. Please confirm with the seller before purchase.