Kobelt has been manufacturing pneumatic control systems for over 4 decades and we have one of the widest ranges of pneumatic controls in the industry. Kobelt controls can be used to govern propulsion on marine vessels, or for actuating Kobelt disc brakes as well as other industrial equipment or machinery.
Kobelt pneumatic control systems consist of pneumatic control heads, actuators and pneumatic valves & parts.
Download our pneumatic brochure for more information or contact us with any questions about marine control systems.
Pneumatic Control Heads
2542 – Pneumatic Pressure Control Head
The 2542 is a solid, bronze and stainless steel pneumatic control head, consisting of a lever-cam operated self-relieving regulating valve. Handle movement actuates the valve, delivering output pressure based on handle position.
The 2542 has a maximum supply pressure of 150 PSI (10.3 BAR), and a 1/8″ NPT.
2543 – Pneumatic Pressure Control Head
The 2543 is a solid, bronze and stainless steel pneumatic control head, consisting of two lever-cam operated self-relieving regulating valves, allowing for dual output. With the handle in the centre or ”off” position, both outputs are at lowest pressure. Movement of the handle in either direction delivers regulated pressure to the chosen output based on handle direction.
The 2543 has a maximum supply pressure of 150 PSI (10.3 BAR), and a 1/8″ NPT.
2544 – Dual Function Pneumatic Control Head
The 2544 dual function pneumatic control head provides single lever control over ship direction (ahead and astern) and engine speed. The pneumatic signal can control either a hydraulic reduction or pneumatic actuating gear.
This control is typically intended for vessels ranging from 40′ to 175′ (12m to 55m), and all pipe connections are 1/8″ NPT.
2546 – Two Lever Triple Output Pneumatic Control Head
The 2546 pneumatic control heads were designed for controllable pitch (CP) propeller and engine speed functions. The longer handle will actuate 2 pressure regulating valves, providing ”0” pressure for ”0” pitch, and in case of failure, the CP actuator will return to ”0” pitch position.
The 2546 is available with labels, and have a maximum supply pressure of 150 PSI (10.3 BAR) and 1/8″ NPT.
2547 – Two Lever Four Output Pneumatic Control Head
The 2547 pneumatic control heads, with four compensating regulating valves, were designed for 2 controllable pitch (CP) propeller and engine speed functions. The 2547 can also be used for twin engine, single lever control for CP propeller and engine speed.
The 2546 is available with labels, and have a maximum supply pressure of 150 PSI (10.3 BAR) and 1/8″ NPT.
2554 – Illuminated Dual Function Pneumatic Control Head
The 2554 dual function pneumatic control head provides single lever control over ship direction (ahead and astern) and engine speed. The pneumatic signal can control either a hydraulic reduction or pneumatic actuating gear. The 2554 also comes with side scales and internal light sockets for illumination.
This control is typically intended for vessels ranging from 40′ to 175′ (12m to 55m), and all pipe connections are 1/8″ NPT.
2555 – Illuminated Twin Dual Function Pneumatic Control Head
The 2555 is a stylish control head, typically used in larger pleasure craft, and can be equipped with illuminated side scales. All pipe connections are 1/8″ NPT, and the valves used to control the clutch and throttle are the 3803 and 3217 respectively.
2556 – Illuminated Two Lever Triple Output Pneumatic Control Head
The 2556 pneumatic control heads were designed for controllable pitch (CP) propeller and engine speed functions. The longer handle will actuate 2 pressure regulating valves, providing ”0” pressure for ”0” pitch, and in case of failure, the CP actuator will return to ”0” pitch position.
The 2556 is available with illuminated side scales and has a maximum supply pressure of 150 PSI (10.3 BAR) and 1/8″ NPT.
2557 – Illuminated Two Lever Four Output Pneumatic Control Head
The 2557 pneumatic control heads, with four compensating regulating valves, were designed for 2 controllable pitch (CP) propeller and engine speed functions. The 2557 can also be used for twin engine, single lever control for CP propeller and engine speed.
The 2556 is available with illuminated side scales, and have a maximum supply pressure of 150 PSI (10.3 BAR) and 1/8″ NPT.
2570 Series – Universal Pneumatic Control Heads
The 2570 series is a set of universal pneumatic control heads that can be configured to actuate or control almost any pneumatically driven system. All 2570 control heads come with a combination of 3804 four-way valves and 3230 pressure compensating valves.
3514 / 3515 – Two Position Three-Way Control Valve
The 3514 and 3515 controls are small, compact mechanical control heads with valves incorporated to allow for station transfer on multi-station pneumatic systems. The 3514 / 3515 has a handle to actuate and switch the flow and transfer control to a different station.
The 3514 / 3515 valves are constructed entirely of bronze & stainless steel, and are available in 1/8″ NPT and a 1/4″ NPT respectively. The photo shown is of a 3514.
3517 – Palm Valve
The 3517 is a small mechanical control head with a palm-sized button for switching the flow and transfer control in a pneumatic system to a different station.
The 3517 is compact, and is constructed entirely of bronze & stainless steel, and is only available in a 1/8″ NPT.
Pneumatic Actuators
4105 Single Direction Pneumatic Throttle Actuators & Positioners
The 4105 is a bronze and stainless steel throttle actuator, equipped with a rolling diaphragm for increased accuracy. The 4105 is meant for light duty applications, and is equipped with a maximum speed stop and idling stop.
The 4105 comes in variable pressure ranges, and has a maximum input pressure of 200 PSI (13.8 BAR) with a 1/4″ NPT
4107 – Single Direction Pneumatic Throttle Actuators & Positioners
The 4107 is a bronze and stainless steel throttle actuator, equipped with a manual override control to allow engine speed setting without air pressure. The 4105 comes equipped with an output rod that is adjustable with double lock nuts, typically meant for medium duty applications.
The 4107 comes in variable pressure ranges, and has a maximum input pressure of 200 PSI (13.8 BAR) with a 1/4″ NPT.
4108 – Single Direction Pneumatic Throttle Actuators & Positioners
The 4108 is a bronze and stainless steel throttle actuator, built with a large bore to provide force for controlling difficult throttle or governor levers. The 4108 comes equipped with an output rod that is adjustable to obtain a precise stroke, and is typically meant for heavy duty applications.
The 4108 comes in variable pressure ranges, and has a maximum input pressure of 200 PSI (13.8 BAR) with a 1/4″ NPT.
4204 – Double Acting Self-Centering Pneumatic Actuator
The 4204 is used for actuating hydraulic or mechanically actuated reverse reduction gear boxes. The 4204 are spring-centred, requiring only 2 control lines for engaging either forward or reverse clutch.
The 4204 is available in either a 2 direction position actuator at 10 to 80 PSI (.7 to 5.5 BAR), or a 3 position self-centering cylinder at 35 to 65 PSI (2.4 to 4.5 BAR)
4207 – Double Acting Self-Centering Pneumatic Actuator
The 4207 is used for actuating hydraulic or mechanically actuated reverse reduction gear boxes. The 4207 are spring-centred, requiring only 2 control lines for engaging either forward or reverse clutch.
The 4207 is available in either a 2 direction position actuator at 10 to 80 PSI (.7 to 5.5 BAR), or a 3 position self-centering cylinder at 25 to 55 PSI (1.7 to 3.8 BAR).
Pneumatic Valves & Parts
3009 – Shuttle Valve
The 3009 shuttle valve is constructed of die-cast silicon brass and stainless steel, capable of operating in temperatures ranging from -40 degrees C to +90 degrees C. The pipe port size is 1/4″ NPT, the flow capacity is 1/4″ orifice equivalent, and the maximum operating pressure for pneumatic systems is 200 PSI (13.8 BAR).
3265 – High Pressure Regulating Valve
The 3265 valve allows for the controlling and lowering of pressure values. The 3265 is constructed of bronze & stainless steel to ensure solid performance, has a 1″ NPT and a maximum operating pressure of 600 PSI (41 BAR).
3325 / 3328 – Relay Valves, Normally Open
The 3325 and 3328 are normally open relay valves, used to sequence air flow based on pressure levels. This allows the designer to interlock control functions, or allow for time delays in reversing without damage to sensitive pneumatic or propulsion equipment. The 3325 has a single pilot-to-shift input, whereas the 3328 has two pilot inputs to permit pressure return of the spool.
3326 / 3327 – Relay Valves, Normally Closed
The 3326 and 3327 are normally closed relay valves, used to sequence air flow based on pressure levels. This allows the designer to interlock control functions, or allow for time delays in reversing without damage to sensitive pneumatic or propulsion equipment. The 3326 has a single pilot-to-shift input, whereas the 3327 has two pilot inputs to permit pressure return of the spool.
3329 Pilot Operated Pressure Compensating Relay Valve
The 3329 provides a large volume of air to clutches, brakes or cylinders with a small pilot control with a high degree of accuracy, providing 5/8″ full air flow. The pilot line can be controlled from multiple stations.
3403 / 3405 – Four-Way Air Pilot Directional Control Valve
The 3403 and 3405 are valves created to allow for station transfer on multi-station pneumatic systems. The 3403 / 3405 allow for pneumatic controls to leverage the functionality of various valves to switch the flow and transfer control to a different station.
The 3403 / 3405 valves are constructed entirely of bronze & stainless steel, and are available in 1/4″ NPT and a 1/2″ NPT respectively. The photo shown is of a 3403.
Time Delay & Interlock Units
Kobelt has designed and manufactured a number of custom built timing units, providing variable interlock control within a pneumatic system. These systems come in a number of configurations: Constant Timing, Variable Timing, Minimum Timing, Throttle Delay and Throttle Boost.
Please contact Kobelt or a Kobelt pneumatics specialty Partner to obtain specifications and available options on these systems.