Lennox 15D33 3/8″ ODM x 1/2″ ODF 4-Ton TXV Thermostatic Expansion Valve

Description

Lennox 15D33 Thermostatic Expansion Valve Overview

The Lennox 15D33 is an OEM thermostatic expansion valve (TXV) engineered for precise refrigerant metering in 4-ton cooling systems. Designed as a direct replacement for compatible Lennox equipment, this valve maintains optimal evaporator performance by accurately regulating refrigerant flow in response to system load changes — helping protect the compressor and maximize system efficiency.

Key Features

• OEM Lennox replacement TXV for reliable, like-for-like performance
• Rated for 4-ton (48,000 BTU/hr) cooling capacity systems
• 3/8″ ODM (male) inlet connection for liquid line compatibility
• 1/2″ ODF (female) outlet connection for evaporator coil connection
• Thermostatic sensing bulb design for accurate superheat control
• Helps maintain proper superheat, protecting the compressor from liquid slugging
• Direct drop-in replacement minimizes installation time and labor

Application

The Lennox 15D33 TXV is intended for use in residential and light commercial split-system air conditioning and heat pump applications where a 4-ton thermostatic expansion valve is required. Always verify compatibility with your specific Lennox system model before installation.

Specifications

• SKU: 15D33
• Brand: Lennox
• Valve Type: Thermostatic Expansion Valve (TXV)
• System Capacity: 4 Ton
• Inlet Connection: 3/8″ ODM
• Outlet Connection: 1/2″ ODF