Maxitrol R400S-1/2 1/2" Gas Appliance Regulator (300,000 BTU)

R & RS series regulators are designed for both main burner and pilot load applications. Featuring a double diaphragm balanced valve design, these units maintain steady outlet pressure despite widely varying inlet pressures while remaining compact in size.

• Capable of controlling pressure at very low flows (standing pilots)
• Molded balancing diaphragm eliminates inlet pressure effects
• High capacity characteristics in a small physical footprint
• Note: Not recommended as a line gas pressure regulator for electronic ignition appliances unless the control valve can open against line pressure

Most in-stock items ship within 1–3 business days. Once shipped, you will receive a confirmation email with tracking. Special-order items or items shipped from partner warehouses may require additional processing time. Orders ship via UPS or USPS depending on the item and destination. If you need a specific carrier, please contact us before placing your order.