A pneumatic soft-start valve allows the downstream pressure in a pneumatic system to rise gradually. These valves help protect cylinders, actuators, and other pneumatic components from potential damage caused by sudden pressure surges. Pneumatic Resources offers a wide selection of high-quality valves from the renowned brand, SMC.
Why Are Pneumatic Soft-Start Valves Important?
Industrial pneumatic systems can be complex, often featuring numerous air cylinders and actuators operating at different speeds and times. For maintenance or repair work, all compressed air must be fully exhausted from machinery, airlines, valves, and cylinders to ensure engineer safety.
The industrial air mains typically operate at pressures of 100 psi or higher. It is crucial that this high-pressure air is not introduced abruptly. Allowing full volume and pressure immediately could cause serious, costly damage.
How Does a Pneumatic Soft-Start Valve Work?
Soft-start valves function by gradually opening the airflow, slowly admitting a controlled amount of compressed air into the system. This gradual pressure increase ensures that actuators reach their full operating pressure safely. Once the system reaches a set threshold pressure, the valve opens fully to allow normal full-pressure operation.
Our soft-start valves come in various specifications, including different body materials, flow rates, threaded inlet port sizes, and pressure ratings, making them suitable for a wide range of pneumatic control and automation applications.
Soft Start & Dump Valve
Pneumatic start-up valves gradually increase pressure on system start-up and exhaust air rapidly when the system is shut down. Air supply and exhaust can be manually operated, and can be locked in the exhaust position.
Combined soft start and dump spring return valve
Temperature range 0°C to +60°C
Compatible with SMC modular series FRL
Maximum working pressure: 10 bar
Proof pressure rating:15 bar
Gauge port sizes from G 1/4 to G 1/2
Piston and slide material NBR
Low power consumption solenoid - 24Vdc @ 1.8W
Large CV factor
Note
When using the dump valve facility, it is recommended that a silencer is fitted to the relieving port.
The SMC Soft start-up valve is that gradually increases supply pressure during start up and rapidly exhausts system air when the supply air is shut off.
Large effective area
Low power consumption
The SMC Soft start-up valve is that gradually increases supply pressure during start up and rapidly exhausts system air when the supply air is shut off.
Large effective area
Low power consumption
The SMC AV5000 soft start up valve have low power consumption. A low speed air supply that gradually increases supply pressure during start up and rapidly exhausts system air when the supply air is shut off.
Manual supply, exhaust function
Modular with F.R.L. combinations
The SMC AV4000 series soft start-up valve gradually increases supply pressure during start up and rapidly exhausts system air when the supply air is shut off. Air supply and exhaust can be manually operated, and can be locked in the exhaust position. It has port size of G 1/2 threading.
Temperature range 0°C to +60°C
Compatible with SMC modular series FRL
Maximum working pressure is 10 bar
Proof pressure rating of 15 bar
Low power consumption
The SMC AV4000 series soft start-up valve gradually increases supply pressure during start up and rapidly exhausts system air when the supply air is shut off. Air supply and exhaust can be manually operated, and can be locked in the exhaust position. It has port size of G 1/2 threading.
Temperature range 0°C to +60°C
Compatible with SMC modular series FRL
Maximum working pressure is 10 bar
Proof pressure rating of 15 bar
Low power consumption
The SMC Soft start-up valve is that gradually increases supply pressure during start up and rapidly exhausts system air when the supply air is shut off.
Large effective area
Low power consumption
The SMC AV2000 soft start up valve have low power consumption. A low speed air supply that gradually increases supply pressure during start up and rapidly exhausts system air when the supply air is shut off.
Manual supply, exhaust function
Modular with F.R.L. combinations
The SMC AV5000 series soft start-up valve gradually increases supply pressure during start up and rapidly exhausts system air when the supply air is shut off. Air supply and exhaust can be manually operated, and can be locked in the exhaust position. It has port size of G 1 threading.
Temperature range 0°C to +60°C
Compatible with SMC modular series FRL
Maximum working pressure is 10 bar
Proof pressure rating of 15 bar
Low power consumption
The SMC AV start-up valve that gradually increases supply pressure during start up and rapidly exhausts system air when the supply air is shut off. It allow the user to set the initial rate of system pressurization to minimize system shock. When deactivated, the valve quickly exhausts the system for safe servicing of equipment.
Large effective flow area
Low power consumption
Modular connectivity with FRL components
The SMC Soft start-up valve is that gradually increases supply pressure during start up and rapidly exhausts system air when the supply air is shut off.
Large effective area
Low power consumption
The SMC AV2000 series soft start-up valve gradually increases supply pressure during start up and rapidly exhausts system air when the supply air is shut off. Air supply and exhaust can be manually operated, and can be locked in the exhaust position. It has port size of G 1/4 threading.
Temperature range 0°C to +60°C
Compatible with SMC modular series FRL
Maximum working pressure is 10 bar
Proof pressure rating of 15 bar
Low power consumption
