August 3, 2007
Release #07-263

Firm's Recall Hotline: (800) 856-5668
CPSC Recall Hotline: (800) 638-2772
CPSC Media Contact: (301) 504-7908
Company's Media Contact: Henry Pearson, (800) 856-5668

Rehvac Manufacturing Recalls Safety Relief Plugs Due to Injury Hazard; Plugs Used on Nitrous Oxide Systems and Heating and Air Conditioning Service Tools

WASHINGTON, D.C. - The U.S. Consumer Product Safety Commission, in cooperation with the firms named below, today announced a voluntary recall of the following consumer product. Consumers should stop using recalled products immediately unless otherwise instructed. It is illegal to resell or attempt to resell a recalled consumer product.

Name of Product: Relief Plugs Used on Nitrous Oxide Systems and HVAC Service Tools

Units: About 4,700

Manufacturer: Rehvac Manufacturing Co., of San Antonio, Texas

Hazard: The safety relief plug can allow pressure to build in the cylinder of an HVAC pressure testing tool or Nitrous Oxide system. If the cylinder is overfilled and overheated it can burst, posing an injury hazard to consumers.

Incidents/Injuries: The firm has received one report of a cylinder that was overheated and overfilled and burst. No injuries have been reported.

Description: This recall involves the 3000 psi safety plugs used in the cylinders of Nitrous Oxide systems and in HVAC pressure testing tools. The Nitrous Oxide systems are used as gas boosters for motor vehicles. The plugs are nickel-plated. The number "3000" is stamped on the face of the plug.

Sold at: HVAC and Nitrous Oxide systems suppliers and retailers nationwide. The safety plugs for the HVAC pressure testing tools were sold from January 2007 through June 2007 and the safety plugs for the Nitrous Oxide cylinders were sold from August 2006 through June 2007. Each was sold for about $5.

Manufactured in: United States

Remedy: Consumers should immediately stop using the cylinders that contain the recalled plugs and place them in a cool location. Consumers should contact Rehvac for a free replacement plug.

Consumer Contact: For additional information, call Rehvac at (800) 856-5668 between 9 a.m. and 6 p.m. ET Monday through Friday or visit the company's Web site at

Picture of Recalled Relief Plugs