Mastercool 57261-MNB1-E — R448A/R449A Class 1.0 80mm 150cm End Valves
2-Way Ball Valve Manifold for R448A/R449A — Class 1.0 Precision 80mm Gauges with 150cm Hoses and End Ball ValvesMastercool is the leading manufacturer of professional-quality A/C m anifold gauge sets. The 57261-MNB1-E is a premium manifold featuring precision-machined ball valves, large Class 1.0 precision 80mm colour-coordinated gauges for R448A and R449A next-generation low-GWP refrigerants, and includes three 150cm nylon barrier hoses with manual ball valves at the hose ends for maximum control and reach. Full 3/8" bore through the block increases flow considerably for faster charging and recovery. Supplied in a plastic carrying case for workshop and mobile service operations.Ultimate Premium FeaturesThis manifold combines FOUR premium features for next-generation refrigerants: Class 1.0 Precision Gauges: Highest accuracy available 80mm Gauges: Largest standard size for easiest reading 150cm Hoses: Extended reach for larger installations End Ball Valves: Maximum control at connection points Professional Configuration: Complete solution for the most demanding low-GWP refrigerant applications Key Features Class 1.0 Precision Gauges: Higher accuracy than standard 1.6 class gauges 80mm Gauges: Large size for easier reading from a distance 150cm Hoses: Extended reach for larger installations Ball Valves at Hose Ends: Additional control with ball valves at both manifold and hose ends Ball Valve Design: Rotates 90° between two PTFE washers Quarter-Turn Operation: Opens and closes quickly with minimal effort Visual Valve Position: Vertical = Open, Horizontal = Closed Full 3/8" Bore: Increases flow for faster charging and recovery Colour-Coordinated: Easy refrigerant recognition R448A/R449A Compatible: Designed for next-generation low-GWP refrigerants Plastic Carrying Case: Organised storage and transport (58102-PBR) Professional Quality: Built to last with finest materials Precision Machined: Highest quality standards Technical Specifications Model: 57261-MNB1-E Type: 2-way ball valve manifold with Class 1.0 precision gauges and end ball valves Gauge Size: 80mm (larger than standard 63mm) Gauge Class: 1.0 (higher precision than standard 1.6 class) Gauge Type: Class 1.0 (R448A, R449A) Bore Size: 3/8" full bore through block Valve Type: Ball valves with PTFE washers at manifold and hose ends Hoses: 3 × 150cm nylon barrier GY5 with ball valves at ends Manifold Fittings: 2 × 1/4" SAE, central tee 1/4" SAE with branch 3/8" Compatible Refrigerants: R448A, R449A Carrying Case: 58102-PBR plastic case included Barcode: 700376104059 SKU: 57261-MNB1-E HS Code: 90262080 Applications R448A refrigeration systems R449A commercial refrigeration HVAC/R installation and maintenance Applications requiring Class 1.0 precision Applications requiring maximum control Larger installations requiring extended reach Commercial applications Industrial installations Workshop and mobile service operations Critical applications where precision and control matter Next-generation low-GWP refrigerant systems Class 1.0 vs Class 1.6 GaugesClass 1.0 (This Model) Higher precision and accuracy Tighter tolerance specifications Professional-grade accuracy Ideal for critical applications Premium professional feature Class 1.6 (Standard) Standard professional accuracy Excellent for most applications End Ball Valve AdvantageThe "-E" suffix indicates ball valves at the hose ends, providing superior control: Maximum Control: Ball valves at both manifold and hose ends Precise Flow Management: Control refrigerant flow at connection point Reduced Refrigerant Loss: Close valves before disconnecting Professional Standard: Premium feature for demanding applications Enhanced Safety: Additional control points for safer operation Flexibility: Isolate individual hoses as needed R448A and R449A RefrigerantsThis manifold is specifically designed for next-generation low-GWP refrigerants: R448A: Low-GWP replacement for R404A and R507A R449A: Low-GWP replacement for R404A and R507A Environmental Benefits: Significantly lower global warming potential Future-Ready: Compliant with environmental regulations Professional Standard: Essential for modern refrigeration systems Optional Accessories3-Valve Conversion90530 — Optional 90° swivel ball valve for 3/8" vacuum (converts 2-valve into 3-valve full control 4-way manifold)Optional Modifications (add suffix to part number) -G: Shock-resistant gauge protectors -T: Assembled with PTFE gaskets Replacement Parts 85102-R-KIT — O-ring repair kit for 2-3-way ball valve manifold 98225 — Ball valve repair kit 91553-EE — Replacement gauge protector set (Red/Blue) 3 1/8" Why Choose Mastercool Manifolds? Professional Quality: Constructed of finest materials Precision Machined: Highest quality standards Built to Last: Every manifold built for long service life Ball Valve Design: Superior performance under pressure Full 3/8" Bore: Faster charging and recovery Colour-Coordinated Gauges: Easy refrigerant recognition Class 1.0 Precision: Highest accuracy for critical applications Large 80mm Gauges: Easier to read from a distance Extended Reach: 150cm hoses for larger installations End Ball Valves: Maximum control and flexibility Nylon Barrier Hoses: Low permeability, professional standard Visual Valve Position: Know at a glance if valves are open or closed Future-Ready: Designed for next-generation refrigerants Perfect For HVAC/R service technicians Refrigeration technicians Commercial refrigeration specialists R448A system service R449A system service Applications requiring Class 1.0 precision Applications requiring maximum control Larger installations Commercial applications Industrial installations Workshop environments Mobile service operations Technicians preferring larger gauges Installations requiring extended reach Critical applications where precision and control matter most Next-generation low-GWP refrigerant systems Maintenance Regular Inspection: Check gauges, valves (including end valves), and hoses for wear Gauge Calibration: Verify accuracy periodically (especially important for Class 1.0 gauges) Valve Operation: Ensure all ball valves operate smoothly Hose Condition: Inspect for damage or leaks O-Ring Replacement: Use 85102-R-KIT when needed Ball Valve Service: Use 98225 repair kit when required Storage: Store in carrying case when not in use Professional Quality: Mastercool manifold gauge sets are built to professional standards with precision machining and finest materials for reliable, long-lasting performance. The 57261-MNB1-E 2-way ball valve manifold features large Class 1.0 precision 80mm colour-coordinated gauges for R448A/R449A next-generation low-GWP refrigerants, full 3/8" bore for faster charging and recovery, and includes three 150cm nylon barrier hoses with manual ball valves at the hose ends in a plastic carrying case for professional HVAC/R service operations requiring maximum precision, larger gauges, extended reach, and maximum control for environmentally-friendly refrigerant systems.