Product Name: Pneumatic Actuator Cylinder (Normally Open) – Part No. BV401184

Description:
This component is a pneumatic actuator cylinder, specifically configured as a Normally Open (NO) unit for high-pressure waterjet cutting systems . It is designed as the core cylinder component for the 60K (60,000 PSI) pneumatic valve assembly, used in conjunction with the VL10189553 actuator assembly . The cylinder converts compressed air energy into linear mechanical motion to actuate the on/off valve (water switch), controlling the start and stop of the high-pressure cutting jet.

Applications:

• Actuates the on/off valve (water switch) on 60,000 PSI waterjet cutting systems 

• Converts compressed air into mechanical force to open and close the high-pressure water flow path

• Used in KMT-style and other standard waterjet systems 

Features:

• Normally Open Configuration: Default state is open; pneumatic pressure is required to close the valve 

• Pneumatic Actuation: Operates on standard plant air supply (typically 75-125 PSIG)

• Cylinder Only: Supplied as the cylinder housing only, without internal components 

• Lightweight: Weight is approximately 1.289 lbs (0.585 kg) 

• Direct OEM Replacement: Interchangeable with OEM part numbers 49894199 and 103070 

Maintenance:

Failure Diagnosis:

• Valve Fails to Close: If the waterjet does not stop when the control signal is given, the actuator cylinder may be malfunctioning or air supply may be insufficient

• External Air Leakage: Hissing sounds or feeling air escaping from the actuator body indicates worn seals

• Sluggish Actuation: Delayed valve response indicates internal wear, low air pressure, or seal degradation

• Visible Damage: Cracks, corrosion, or physical damage to the cylinder housing

Inspection and Replacement Guidelines:

• Full Depressurization (Critical): Before any maintenance, fully depressurize the waterjet system (high-pressure water and air supply) and follow lockout/tagout procedures

• Check Air Supply: First verify the air supply is within the required range (75-125 PSIG) and the supply line is not kinked or blocked

• Complete Assembly Replacement: This component is typically the cylinder housing only. If internal seals or the piston fail, the entire actuator assembly may need replacement

• Inspect for Corrosion: Check the cylinder body and connections for signs of rust or physical damage in high-moisture environments

• Clean Installation: Perform assembly in a clean area to prevent contamination of sealing surfaces

Cross-Reference Information:

• KMT #: 49894199, BV401184 

• Other: 103070 

• Used in VL10189553 60K Actuator Assembly