58103-MRB

2-Way Ball Valve Manifold for R134a/R22/R12/R404A — 80mm 4-Scale Gauges (Manifold Only - No Hoses)

Mastercool is the leading manufacturer of professional-quality A/C manifold gauge sets. The 58103-MRB is a manifold-only option featuring precision-machined ball valves and large 80mm colour-coordinated 4-scale gauges for R134a, R22, R12, and R404A. This manifold-only configuration is ideal for technicians who already have hoses or want to build a custom setup. Full 3/8" bore through the block increases flow considerably for faster charging and recovery.

Manifold Only - No Hoses Included

This is a manifold-only product (58103 series) that does NOT include hoses. It's perfect for:

• Technicians who already own hoses
• Replacing a damaged manifold whilst keeping existing hoses
• Building a custom manifold setup
• Upgrading to larger 80mm gauges
• Spare manifold for workshop use

Key Features

• Manifold Only: No hoses included - manifold block with gauges only
• 80mm Gauges: Large size for easier reading from a distance
• 4-Scale Gauges: Versatile for R134a, R22, R12, R404A
• 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
• 1.6 Gauge Class: Professional standard accuracy
• Colour-Coordinated: Easy refrigerant recognition
• Professional Quality: Built to last with finest materials
• Precision Machined: Highest quality standards

Technical Specifications

• Model: 58103-MRB
• Type: 2-way ball valve manifold only (no hoses)
• Gauge Size: 80mm (larger than standard 63mm)
• Gauge Class: 1.6
• Gauge Type: MRBH-MRBL (R134a, R22, R12, R404A)
• Bore Size: 3/8" full bore through block
• Valve Type: Ball valves with PTFE washers
• Manifold Fittings: 2 × 1/4" SAE, central tee 1/4" SAE with branch 3/8"
• Compatible Refrigerants: R134a, R22, R12, R404A
• Hoses: NOT included (manifold only)
• Carrying Case: NOT included (manifold only)
• Barcode: 700376103021
• SKU: 58103-MRB
• HS Code: 90262080

Applications

• R134a automotive A/C and refrigeration
• R22 legacy system service
• R12 older system service
• R404A commercial refrigeration
• HVAC/R installation and maintenance
• Replacement manifold for existing hose sets
• Custom manifold configurations
• Workshop spare manifold
• Upgrading from 63mm to 80mm gauges

4-Scale Gauges

The MRBH-MRBL gauges provide versatile refrigerant compatibility:

• R134a: Automotive A/C and modern refrigeration
• R22: Legacy systems
• R12: Older automotive and refrigeration systems
• R404A: Commercial refrigeration

Complete Manifold Sets with Hoses

If you need a complete manifold set with hoses and carrying case, choose from these options:

With 90cm Hoses:

• 57236-MRB — R134a/R22/R12/R404A 80mm with 90cm Hoses

With 150cm Hoses:

• 57261-MRB — R134a/R22/R12/R404A 80mm with 150cm Hoses

With 180cm Hoses:

• 57272-MRB — R134a/R22/R12/R404A 80mm with 180cm Hoses

What You'll Need

Since this is a manifold-only product, you'll need to provide your own:

• Hoses: 3 × nylon barrier hoses with appropriate length and fittings
• Carrying Case: For storage and transport (optional)
• Gauge Protectors: 91553-EE for 80mm gauges (optional)

Optional Accessories

3-Valve Conversion:

• 90530 — Optional 90° swivel ball valve for 3/8" vacuum (converts 2-valve into 3-valve full control 4-way manifold)

Gauge Protectors:

• 91553-EE — Shock-resistant gauge protector set (Red/Blue) 3 1/8" for 80mm gauges

Optional Modifications (add suffix to part number when ordering):

• -G: Shock-resistant gauge protectors installed
• -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

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
• Large 80mm Gauges: Easier to read from a distance
• 4-Scale Versatility: Works with multiple refrigerants
• Visual Valve Position: Know at a glance if valves are open or closed

Perfect For

• HVAC/R service technicians
• Automotive A/C specialists
• Refrigeration technicians
• R134a system service
• R22 legacy system service
• R12 older system service
• R404A commercial refrigeration
• Technicians who already own hoses
• Replacing damaged manifolds
• Building custom setups
• Workshop spare manifolds
• Upgrading to 80mm gauges
• Technicians working with multiple refrigerants

Maintenance

• Regular Inspection: Check gauges and valves for wear
• Gauge Calibration: Verify accuracy periodically
• Valve Operation: Ensure ball valves operate smoothly
• O-Ring Replacement: Use 85102-R-KIT when needed
• Ball Valve Service: Use 98225 repair kit when required
• Storage: Store in a safe, dry location 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 58103-MRB 2-way ball valve manifold features large 80mm colour-coordinated 4-scale gauges for R134a/R22/R12/R404A and full 3/8" bore for faster charging and recovery. This manifold-only configuration (no hoses included) is ideal for technicians who already have hoses, need a replacement manifold, or want to build a custom setup for professional HVAC/R service operations requiring versatile refrigerant compatibility.