Yellow Jacket 42004 Manifold

The Yellow Jacket 42004 Series 41 Manifold is a workhorse designed for the daily demands of field service. Engineered with a heavy-duty 2-valve forged brass body, this manifold is built for high-pressure performance on R-410A, R-22, and R-404A systems. The oversized 3-1/8 inch non-flutter gauges provide high-contrast scales for superior legibility and precision compared to standard small-orifice gauges. To ensure a reliable seal and long-term durability, the internal assembly utilizes sliding double O-ring pistons which reduce mechanical wear and prevent leaks during critical charging or recovery phases. This package includes a set of three 60-inch PLUS II hoses with 1/4 inch flare fittings, offering the length and pressure ratings necessary for both residential and commercial mechanical rooms. This HVAC charging manifold remains the industry standard for technicians who require a dependable, mechanical toolset for accurate pressure diagnostics and efficient refrigerant management in the field.

Key Benefits for Technicians

• Forged Brass Construction: Provides long-term structural integrity and resists stripping at the 1/4" port connections.
• Advanced Gauge Technology: The 3-1/8" faces use a non-flutter design to provide steady readings even during rapid pressure oscillations.
• High-Flow Design: Features full-port valves to maximize refrigerant velocity and decrease system evacuation and charging times.
• Field Serviceable: The manual valves and internal pistons are designed for easy maintenance, ensuring the tool stays in the truck rather than the shop.

Common Technical Questions

What is the maximum pressure rating for the included 60-inch hoses?
The included PLUS II hoses are rated for high-pressure refrigerants like R-410A, featuring a 4000 psi burst pressure and an 800 psi working pressure.

Can these gauges be calibrated if the zero point shifts?
Yes, the 3-1/8" gauges feature an accessible front-facing calibration screw, allowing you to reset the needle to zero for consistent accuracy.

Are the manifold valves compatible with other refrigerant oils?
The sliding double O-ring design is compatible with both POE and PVE oils commonly found in modern R-410A systems, as well as mineral oils used in older R-22 equipment.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.