6.5 cu ft K-Series Portable Blast Pot – Pneumatic Pressure Hold System with MPV Metering Valve & #400 Pinch Valve, 1-1/4" Piping, Moisture Separator & 55' Twin-Line Remote Control

Part Number: 41-301-MPV-A
Compatible With: KEY HOUSTON #40301
Weight: 586.12 lbs
Warranty: 5-Year Limited / 10-Year Vessel Warranty

Overview

The 6.5 cu ft K-Series Portable Blast Pot (MPV Model) delivers industrial-grade performance and reliability for demanding surface preparation jobs.
Built with a Pneumatic Pressure Hold System, the vessel stays pressurized between cycles, conserving air and abrasive while ensuring smoother restarts.
Equipped with the proven MPV Metering Valve and #400 Pinch Valve, this system provides precise control over abrasive flow and media cut-off, enhancing efficiency and consistency in every blast.

Ideal for heavy-duty contractors, industrial maintenance crews, and fabrication shops that require dependable output and simple in-field serviceability.

Key Features & Benefits

A. Pressure Vessel

• 6.5 cu ft (185 L) capacity, rated at 150 PSI (10.3 BAR)

• Built to A.S.M.E. Section VIII Division 1 standards

• C.R.N. Certified for all provinces

B. Pressure Hold System

• Keeps vessel pressurized when the control handle is released

• Ensures smoother starts/stops and minimizes moisture issues

• Reduces abrasive consumption and downtime

C. Emergency Air Tank

• Maintains pinch-valve closure if compressor air supply fails

• Adds a layer of safety and reliability in remote operations

D. Heavy-Duty Moisture Separator

• Removes water vapor and contaminants for cleaner, drier air

E. 1-1/4″ Galvanized Piping

• Corrosion-resistant and designed for high-volume airflow

F. Heavy-Duty Full-Port Ball Valves

• Maximizes air delivery and system responsiveness

G. Schedule 80 Heavy-Duty Nipples

• Engineered to withstand abrasive wear and extend service life

H. JIC-Fitted Pusher Line

• Eliminates gasket-related leaks and simplifies maintenance

I. MPV Metering Valve / #400 Pinch Valve

• MPV Valve: Manual plunger design offers fine abrasive control

• #400 Pinch Valve: Provides smooth air/media flow cut-off for precision blasting

J. Bag-Breaker & Screen

• Prevents debris contamination during abrasive refilling

K. Blow-Down Muffler

• Reduces noise during depressurization

L. 6″ FAST-FILL™ Pop-Up

• Allows faster abrasive loading for continuous productivity

Specifications

Applications

• Industrial and commercial sandblasting operations

• Structural steel, bridge, shipyard, and tank restoration

• Surface preparation for coatings, linings, and corrosion removal

• Construction and heavy-equipment maintenance

Compatibility

• OEM Replacement For: KEY HOUSTON #40301

• Fully compatible with K-Series MPV /#400 Pneumatic configurations and accessories