3.5 cu ft K-Series Portable Sandblast Pot – Pneumatic Pressure Hold System, Bronze Blasting Package with MPV Metering Valve & #400 Pinch Valve, 1" Piping with Moisture Separator

Part Number: 41-300-MPV-B
Compatible With: KEY HOUSTON #40300
Weight: 493.04 lbs
Warranty: 5-Year Limited / 10-Year Vessel Warranty

Overview

The 3.5 cu ft K-Series Portable Sandblast Pot (Bronze Package) is engineered for reliable, high-performance blasting in a compact and durable format.
Equipped with an MPV Metering Valve and #400 Pinch Valve, this system ensures precise control over abrasive flow and air delivery, enabling smooth, efficient operation.
Its Pneumatic Pressure Hold System keeps the vessel pressurized when idle, conserving abrasive and reducing moisture-related issues.

Built for contractors and industrial applications, this model provides the optimal balance of power, portability, and dependability.

Bronze Blasting Package Includes

• (1) 10-100BLK-050-3AL – 1″ Blast Hose Assembly Kit with Couplings (50′)

• (1) 1201-1173 – #4 Tungsten Carbide, All-Poly Nozzle

Key Features & Benefits

A. Pressure Vessel

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

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

• C.R.N. Certified for all Canadian provinces

B. Pressure Hold System

• Keeps vessel pressurized when control handle is released

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

• Reduces abrasive waste and improves productivity

C. Emergency Air Tank

• Functions as a safety reserve to maintain pinch valve closure during compressor failure

• Prevents accidental discharge and enhances reliability

D. Heavy-Duty Moisture Separator

• Removes condensation from air supply to prevent clogging and media degradation

E. 1″ Galvanized Piping

• Corrosion-resistant, long-lasting piping assembly for reliable air and media flow

F. Heavy-Duty Full-Port Ball Valves

• Provides unrestricted airflow and improves system response

G. Schedule 80 Heavy-Duty Nipples

• Designed for durability under abrasive exposure, extending component lifespan

H. JIC-Fitted Pusher Line

• Eliminates gasket failures and simplifies maintenance in field use

I. MPV Metering Valve / #400 Pinch Valve

• MPV Valve: Manual plunger-style valve allows precise abrasive flow adjustment

• #400 Pinch Valve: Controls on/off air and media flow with dependable operation

J. Bag-Breaker & Screen

• Standard over-the-pop-up design prevents contamination during refills

K. Blow-Down Muffler

• Minimizes noise during depressurization for a quieter work environment

L. 6″ FAST-FILL™ Pop-Up

• Enables fast abrasive refilling for reduced downtime

Specifications

Applications

• General surface preparation and industrial cleaning

• Bridge, tank, and heavy-equipment restoration

• Pipeline and field maintenance operations

• Fabrication and construction environments requiring efficient abrasive blasting

Compatibility

• OEM Replacement For: KEY HOUSTON #40300

• Fully compatible with all K-Series Pressure Hold systems and MPV/#400 configurations