3.5 cu ft K-Series Portable Blast Pot – Pneumatic Pressure Hold System with #100 Metering Valve & #400 Pinch Valve, 1" Piping w/ Moisture Separator, 55' Twin-Line Hose & Pneumatic Handle #2
Part Number: 41-300-A
Compatible With: KEY HOUSTON #40300
Weight: 496.64 lbs
Warranty: 5-Year Limited / 10-Year Vessel Warranty
Overview
The 3.5 cu ft K-Series Portable Blast Pot – Pneumatic Pressure Hold System is a rugged, field-ready abrasive blasting unit designed for superior reliability and efficiency. Featuring a #100 Metering Valve and #400 Pinch Valve, this model maintains precise control over abrasive flow while delivering smooth start-and-stop operation.
Built for durability and performance, it includes an Emergency Air Tank, Heavy-Duty Moisture Separator, and 1″ Galvanized Piping, making it ideal for contractors and industrial professionals seeking dependable, portable blasting performance under demanding conditions.
Key Features & Benefits
A. Pressure Vessel
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3.5 cu ft (100 L) capacity rated for 150 PSI (10.3 BAR)
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Built to A.S.M.E. Section VIII Division 1 standards
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C.R.N. Certified for all Canadian provinces
B. Pressure Hold System
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Vessel remains pressurized when the control handle is released
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Provides smoother start/stop operation compared to pressure release systems
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Reduces abrasive loss and improves blasting efficiency
C. Emergency Air Tank
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Built-in air reserve maintains pinch valve closure if compressor fails or runs out of fuel
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Enhances safety and operational reliability—an upgrade over legacy designs
D. Heavy-Duty Moisture Separator
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Filters air supply to prevent moisture contamination in abrasive media
E. 1″ Galvanized Piping
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Provides corrosion resistance and efficient airflow under high pressure
F. Full-Port Ball Valves
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Heavy-duty construction for maximum air throughput and reliability
G. Schedule 80 Heavy-Duty Nipples
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Designed to withstand abrasive wear for extended service life
H. JIC-Fitted Pusher Line
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Eliminates gasket-related issues and simplifies field maintenance
I. #100 Metering Valve / #400 Pinch Valve
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#100 Metering Valve offers proven, legacy-style abrasive flow control
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#400 Pinch Valve manages air and abrasive start/stop functions for optimal precision
J. Bag-Breaker & Screen Assembly
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Standard inclusion for preventing debris entry during abrasive loading
K. Blow-Down Muffler
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Reduces noise levels during depressurization for safer work environments
L. 6″ FAST-FILL™ Pop-Up
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Allows faster abrasive filling to minimize downtime between cycles
Specifications
| Specification | Detail |
|---|---|
| Model | 41-300-A |
| Vessel Capacity | 3.5 cu ft (100 L) |
| Working Pressure | 150 PSI (10.3 BAR) |
| System Type | Pneumatic Pressure Hold |
| Valve Type | #100 Metering Valve / #400 Pinch Valve |
| Piping Size | 1″ Galvanized |
| Moisture Separator | Included |
| Control Handle | Pneumatic Handle #2 (55′ Twin-Line Hose) |
| Safety Feature | Integrated Emergency Air Tank |
| Fill Type | 6″ FAST-FILL™ Pop-Up |
| Certifications | A.S.M.E. Section VIII, C.R.N. (All Provinces) |
| Weight | 496.64 lbs |
| Warranty | 5-Year Limited / 10-Year Vessel Warranty |
Applications
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Mobile and on-site sandblasting operations
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Industrial surface preparation and maintenance
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Bridge, shipyard, and pipeline restoration projects
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Construction, fabrication, and heavy-equipment cleaning
Compatibility
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OEM Replacement For: KEY HOUSTON #40300
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Compatible with K-Series Pressure Hold Systems and legacy-style #100/#400 valve setups
