Low Loss Refrigerant Charging Valve Set - 1/4" & 5/16" SAE Brass Ball Valves for HVAC Manifold Gauges, Positive Shut-Off, Depress Schrader Core, for R22 R410A Mini-Split AC Service

STOP REFRIGERANT LOSS - Low Loss Ball Valve Design Eliminates sudden gas bursts when connecting or disconnecting hoses. The 90° ball valve provides instant positive shut-off, keeping refrigerant sealed inside the hose. Protects technicians from frostbite and reduces costly refrigerant waste during AC service calls. DEPRESS SCHRADER CORE - Full Flow Access Internal stem depresses the Schrader valve core upon installation, allowing unrestricted refrigerant flow for accurate pressure readings and precise charging. Replaces the need for a separate depressor tool on standard service ports. DUAL SIZE FITTING - Blue (1/4") for R22, Red (5/16") for R410A Blue valve (1/4" Male × 1/4" Female) fits standard R22 residential AC systems. Red valve (1/4" Male × 5/16" Female) is specifically sized for high-pressure R410A mini-split units. Covers both old and new HVAC systems. ADJUSTABLE FLOW CONTROL - Knurled Knob for Fine-Tuning Large knurled knob allows precise regulation of refrigerant flow, even with gloved hands. Essential for controlling superheat and subcool during system charging, or adjusting nitrogen pressure during leak tests. DURABLE BRASS TOOL - For Daily HVAC Service Machined from high-quality brass for corrosion resistance and long service life. Compact enough to stay attached to manifold gauge hoses or stored in a tool bag. An essential spare for residential and light-commercial AC maintenance., Manufacturer: Qigreesol