MV70V | Vertical Flow Switch, 8122 PSI High-Pressure Monitoring

MV70V

8,122 PSI vertical flow switch with automatic pump control

• The AR MV70V is a high-pressure vertical flow switch rated to
  8,122 PSI that provides precise flow detection and automatic pump start/stop in vertical
  lines.
• Monitors water movement and signals the control circuit to start the pump when flow is present and shut it
  down immediately when flow ceases.
• Helps prevent dry running, overheating, and cavitation while maintaining stable system
  pressure during active wash or test cycles.

Construction & Materials

High-pressure body with precision internals

• Built with a corrosion-resistant brass or stainless-steel body engineered for extreme
  service in industrial wash bays, heavy equipment cleaning, water blasting, and hydraulic test circuits.
• Houses precision-machined internal components that resist mechanical wear, chemical
  attack, and thermal expansion.
• Low-restriction flow path is designed to minimize pressure drop while maintaining
  reliable sensitivity to flow changes.
• Sealed electrical terminals protect connections from moisture, spray, and debris in wet
  or humid locations.

MV70V – Vertical Flow Switch, How It Works

Flow-sensing piston with clean electrical output

• A balanced internal piston/actuator assembly reacts instantly to changes in flow within
  the vertical line.
• Hydraulic movement is translated into a clean electrical signal that interfaces with pump
  relays, safety interlocks, or automation panels.
• When flow begins, the switch closes the control circuit to start the pump; when flow
  stops, it opens the circuit to shut the pump down.
• Actuation is tied to actual flow, not just pressure, providing dependable protection even
  if nozzles clog, supply lines collapse, or valves close unexpectedly.

Protection & System Benefits

Safety, uptime, and efficiency

• Protects pumps, motors, couplings, and high-pressure hoses from damage caused by dry run and pressure
  spikes.
• Improves energy efficiency by running the pump only when there is downstream flow demand.
• Reduces heat buildup and extends the life of seals, hoses, and fittings by eliminating unnecessary run
  time during idle periods.
• Rapid response helps guard against sudden flow interruptions, limiting shock loads and transients in the
  hydraulic circuit.

Installation & Integration

Vertical-line mounting with NPT threaded ports

• Designed specifically for vertical line installation where plumbing rises to reels,
  manifolds, or overhead headers.
• Uses standard NPT threaded ports for quick installation into risers, discharge lines, and
  manifolds.
• Compact dimensions allow mounting close to pumps, unloaders, or distribution headers without crowding
  adjacent components.
• Sealed electrical leads connect easily to pump control relays, PLC inputs, or safety circuits according to
  the panel schematic.
• Commissioning is straightforward: thread into the vertical run, observe any flow-direction markings,
  wire into the control circuit, and verify start/stop behavior by cycling the downstream trigger or valve.

Maintenance & Best Practices

Minimal service for long-term reliability

• Periodically inspect the switch body for external leaks and verify that threaded joints remain tight and
  corrosion-free.
• Confirm that electrical contacts stay clean, tight, and properly sealed against moisture ingress.
• Ensure upstream filtration prevents debris from entering the flow passage; occasional system flushes help
  maintain crisp actuation.
• The self-cleaning motion of the piston reduces fouling risk, so routine checks and basic cleaning are
  usually sufficient to keep the switch responsive.

Typical Applications for MV70V Vertical Flow Switch

High-pressure vertical-line control

• Industrial wash bays and truck/bus wash systems.
• Heavy equipment cleaning and water blasting rigs.
• Hydraulic and hydrostatic test circuits requiring flow-verified pump control.
• Fixed wash bays and plant washdown systems with vertical risers to reels or manifolds.
• Multi-pump and zone-controlled systems where each branch needs its own automatic flow interlock.

Quick Specs MV70V Vertical Flow Switch

Technical snapshot

• Model: AR MV70V
• Type: Vertical flow switch with automatic pump start/stop
• Max pressure: 8,122 PSI
• Installation: Vertical line only
• Body material: Brass or stainless steel (application-dependent)
• Internals: Precision piston/actuator assembly with sealed electrical interface
• Ports: NPT threaded connections
• Use case: Dry-run prevention, pressure spike protection, and automatic control in
  high-pressure cleaning and hydraulic systems