3.5 cu ft K-Series Stationary Sandblast Pot – Pneumatic Pressure Hold System with MPV Metering Valve & #400 Pinch Valve, 1″ Piping with Moisture Separator, 55′ Twin-Line Hose & Pneumatic Control Handle #2

Part Number: 41-350-MPV
Compatible With: KEY HOUSTON #40300
Weight: 336.74 lbs
Warranty: 5-Year Limited / 10-Year Vessel Warranty

Overview

The 3.5 cu ft K-Series Stationary Pneumatic Blast Pot is a compact, heavy-duty blasting unit engineered for precision, efficiency, and long-term reliability in fixed-site operations.
Equipped with a Pneumatic Pressure Hold System, MPV Metering Valve, and #400 Pinch Valve, this system provides smooth start/stop performance and consistent abrasive flow control.
Ideal for manufacturing, fabrication, and maintenance facilities requiring continuous blasting performance and low downtime.

Key Features & Benefits

A. Pressure Vessel

• 3.5 cu ft (100 L) capacity rated for 150 PSI (10.3 BAR)

• Manufactured 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 control handle is released

• Provides smoother starts and stops compared to pressure-release designs

C. Emergency Air Tank

• Acts as a reserve to keep the pinch valve closed during compressor failure or air loss

• Enhances operator safety and system reliability

D. Heavy-Duty Moisture Separator

• Eliminates condensation for consistent abrasive flow

E. 1″ Galvanized Piping

• Corrosion-resistant for long-term durability and smooth air delivery

F. Full-Port Ball Valves

• Maximize air flow capacity and improve system efficiency

G. Schedule 80 Heavy-Duty Nipples

• Provide extended service life by resisting abrasive wear

H. JIC-Fitted Pusher Line

• Eliminates gasket issues and simplifies maintenance

I. MPV Metering Valve / #400 Pinch Valve

• MPV Manual Plunger Valve: Simple and reliable design offering a wide range of abrasive flow adjustment

• #400 Pinch Valve: Controls air and abrasive start/stop functions for precise blasting control

J. Bag-Breaker & Screen

• Protects system from debris during abrasive loading

K. Blow-Down Muffler

• Reduces noise during depressurization for safer operation

L. 6″ FAST-FILL™ Pop-Up

• Allows rapid abrasive filling to maximize uptime

Specifications

Applications

• Stationary industrial surface preparation and coating removal

• Fabrication, automotive, and refinery operations

• Ideal for facilities requiring controlled, continuous blasting

Compatibility

• OEM Replacement For: KEY HOUSTON #40300

• Fully compatible with K-Series Pneumatic Pressure Hold systems