Cartridge and Servo Cartridge Valves
Cartridge Valves, also known as 2/2-way valves or logic elements, are industrial hydraulic valves used for directional, pressure, check, and flow control. These cartridge valves are a compact design that can be used in hydraulic manifold systems for many types of industrial and mobile machinery. These products are ideal for applications which require high flow rates and leak-free control.
2-way Slip-in Cartridge Valves (CEE, CCE, CHE, RHE, RSE, CSE)

Cartridge Valves mounted in a manifold provide a compact, integrated circuit for simplified machine design and reduced system costs. The cartridge is designed to fit into a cavity and is held in place by a cover. The cavities conform to the ISO 7368 standard. Moog offers a wide range of 2-way Slip-in Cartridge Valves:
2 and 3-way Servo Cartridge Valves (DSHR, SE3, X700)

Servo Cartridge Valves are used for directional flow control and designed to be installed in manifold 'slip-in' cavities. Employing Moog's proven integrated Electric Feedback (EFB) Valve control, they combine high dynamic performance with precise control for hydraulic actuators. They come in two versions:
Literature
Moog 2-way Slip-in Cartridge Valves - Actively Operated CHE Series NB16 - NB100
2-way Slip-in Cartridge Valves - Monitored and Actively Operated - RSE Series NB16 to NB100
Moog 2-way Servo Cartridge Valves DSHR Series NB40 - NB160
Moog 3-way Servo Cartridge Valves SE3 Series NB30 -NB63
Cartridge Covers ISO 7368 Sizes 16 to 100