Weil McLain 511-044-256 Combination Natural Gas Valve 3/4" NPT Step Opening

The Weil McLain 511-044-256 is a combination natural gas valve designed for residential gas boilers with standing pilot systems. This genuine OEM replacement part features a step-opening design (1.2" step) for controlled gas flow regulation in heating applications.

Key Specifications:

• Connection Size: 3/4" x 3/4" NPT (National Pipe Thread)
• Gas Type: Natural gas only (cannot be converted to LP)
• Voltage: 24 Volt AC, 50/60 Hz
• Opening Style: Step opening (1.2" step)
• Honeywell Model Equivalent: VR8300C-4050
• Application: Standing pilot combination gas control valve

Features:

• Integrates safety shutoff, manual valve, dual automatic operators, and pressure regulator
• Designed for CG-7 and CG-8 Series residential gas boilers
• Straight-through body pattern for efficient gas flow
• Thermocouple-compatible for pilot safety (30mV nominal output)
• Continuous pilot dual automatic valve design

This combination gas control valve is engineered for gas-fired heating appliances and provides reliable, safe operation in residential boiler systems. The step-opening function ensures controlled ignition sequencing for optimal performance and safety.