Airlocks And Valves

Mac Process airlocks are the workhorse of the industry. Durable and value conscious, our complete line of airlocks are precision-crafted at extremely close tolerances to eliminate dusting, reduce maintenance cost, and avoid process shutdowns.

Mac Process airlocks are the workhorse of the industry. Durable and value conscious, our complete line of airlocks are precision-crafted at extremely close tolerances to eliminate dusting, reduce maintenance cost, and avoid process shutdowns.

Variety of Airlocks and Valves:

High Efficiency (HE) Airlocks

Engineered and manufactured to provide high-quality reliable service during continuous on-stream duty. Features angled cast inlets to reduce shear and distribute wear. The removable inspection facilitates that requirement and allows easy access to the adjustable tips.

Multi Duty (MD) Airlocks

A highly universal airlock designed for rugged service. It is suitable for use in dilute phase vacuum, pressure or combination vacuum/pressure pneumatic conveying systems with a maximum differential pressure of 15 psi.

Cleanable Round Airlock (CRA)

The CRA valve offers the largest CFR capacity on the market, so manufacturers can use cleanable technology in systems with high product volume demand.

Round Airlock Multi-Duty (RAM)

The RAM Airlock includes round, flanged inlet and outlet connections with 150# drilling.  The basic valve is designed for 15 psi differential pressure service and comes complete with a fabricated, machined, eight-vane open end rotor.

Heavy Duty (HA) Airlocks

Heavy Duty Airlocks are used in pneumatic conveying systems and gravity discharge of filters, cyclones, storage tanks, and as volumetric feeders.

MTA Airlocks

MTA Airlocks feature a heavy duty cast, precision-machined valves designed from application requiring a valve capable of operating at differential pressures of up to 30 psi.

High Pressure (HP) Airlocks

The HP is ideal for an application requiring a valve suited for operation in the range of 30-60 psi. All HP airlocks are standard with machined tapered 316 stainless steel cast housing with ceramic bore and end plates.

CV Valve

The Conveying Valve blow-thru design allows the airlock to meter product form the rotating pockets directly into the conveying line. The CV valve is ideal in applications with limited head room.

Fabricated Square and Round (FS and FR) Airlocks

The RS and FR Airlocks are equipped with flexible wiper blade rotors to provide superior handling for stringy or fibrous products. This design is used in applications where little or no pressure differential is present across the inlet or outlet ports.

RV Airlock

The RV rotary valve is a high efficiency airlock with minimum leakage blow-back. An inboard bearing provides maximum shaft support and minimizes rotor deflection. The RV features double opposed lip seals that protect the inboard bearing from product infiltrations. The RV is specifically designed for food applications in wash-down environments.

OBRV Valves

The OBRV valve is a high efficiency airlock with minimum leakage blow-back. The OBRV contains a shaft braided packing seal most frequently used where product contact could damage the seals and cause bearing failure. 

WG Airlock

The WG Airlock is a fabricated wiper style airlock. It has fabricated a non-machined house with a six-vane urethane flex tip rotor. Design for up to 20” WC pressure.

SEA Airlock

The Side Entry Airlock contains offset inlet and outlet ports reducing product shearing. With the valve’s side entry inlet and outlet ports, the airlock can operate in applications where drop-thru airlocks are typically used.