Hunt 3/8″ NPT Flo-Director Pneumatic Directional Valve Model 43

Overview

The Hunt Model 43 Flo-Director is a manually actuated pneumatic directional control valve manufactured by Hunt Valve Company, Inc. With 3/8″ NPT port sizing and a 3-position, 4-port body configuration, this valve is designed to direct flow in pneumatic and light hydraulic circuits. The Flo-Director series is engineered for straightforward manual operation, making it ideal for point-of-use control where solenoid actuation is not required.

Key Features

• Manual lever operation — no electrical or pneumatic actuation required; simple, reliable control
• 3-position, 4-port design — directs, blocks, or reverses flow with firm detent positions
• Dual port manifolds — ports on both body sides and rear for flexible hose/pipe routing
• Compact mounting footprint — fits standard cavity patterns for drop-in system integration
• Air and oil compatible — rated for both pneumatic and low-viscosity fluid service
• Surplus stock condition — fully functional, inspected, ready for deployment

Technical Specifications

The Hunt Model 43 valve is built with durable ductile-iron and steel components, sized for low-to-medium flow applications common in manufacturing automation and pneumatic tooling circuits.

Typical Applications

• Pneumatic tool control — actuating cylinders and motors on assembly lines and production equipment
• Manufacturing automation — directional control in automated material handling and clamping systems
• Retrofit and replacement — cost-effective upgrade or spare for existing Hunt valve installations
• Point-of-use control stations — operator-controlled switching for machinery and fixture circuits
• Light-duty hydraulic systems — compatible with water-in-oil or low-viscosity fluids at moderate pressure

Compatibility & Replacements

Compatible With

• Standard 3/8″ NPT female-port pneumatic and hydraulic circuit blocks
• Low-pressure (<100 psi) and medium-pressure (100–300 psi) pneumatic systems
• Manifold cavity-mounted or stand-alone applications with 2-3/8″ square mounting pattern
• Mineral oil, air, and water-in-oil service fluids

Replaces / Drop-In Replacement For

Verify compatibility with your system integrator before ordering. The Hunt Model 43 Flo-Director may be interchangeable with other 3/8″ NPT 3-position manual directional valves of similar spool design; however, do not assume drop-in compatibility without confirming cavity dimensions and port layout with the original equipment documentation.

Works With

• Pneumatic actuators (double-acting cylinders, motors)
• Pilot-operated valves and proportional directional controllers (external control)
• Pressure regulators and flow-control cartridges in modular systems
• Manual and automatic plant-floor control stations