Type S402M
Fisher Controls Controls
Installation Manual
Type S402M Pressur Pressure e Reducing Meter Bar Regulator R
October 1994
Form 5356
Introduction Introduction
Installation
This installation manual covers the installation and startup procedures for the Type S402M pressure reducing meter bar regulator. If maintenance disassembly is required, refer to the S400 Series Instruction Manual (Form 5266). To receive a copy of the instruction manual, contact your Fisher sales office or sales representative.
1. Only personnel qualified through training and experience should install, operate, and maintain a regulator. Before installing a Type S402M regulator, check for damage which might have occurred in shipment. Also check for dirt or foreign materials which may have accumulated in the regulator body or in the pipeline.
The Type S402M is a self-operated, spring loaded meter bar regulator typically used on residential applications. The regulator can be used with gaseous fluids such as natural gas, or propane.
WARNING Personal injury, equipment damage, or leakage due to escaping accumulated gas or bursting of pressure-containing parts may result if this regulator is overpressured or is installed where service conditions could exceed the limits given in table 1. To avoid such injury or damage, provide pressure-relieving or pressure-limiting devices (as required by Title 49, Part 192, of the U.S. Code of Federal Regulations, by the National Fire Codes of the National Fire Protection Association, or by other applicable codes) to prevent service conditions from exceeding those limits. Additionally, physical damage to the regulator could result in personal injury or damage due to escaping gas. To avoid such injury and damage, install the regulator in a safe location.
eFisher Controls International, Inc. 1994; All Rights Reserved
2. Apply a good grade of pipe compound to the male threads (being sure not to apply pipe compound to flow path of the pipe) or the pipe and install the regulator so that the flow is in the direction of the arrow cast on the body. Use approved piping procedures when installing the regulator. The spring case can be rotated to any position relative to the body.
WARNING A regulator may vent some gas to the atmosphere. In hazardous or flammable gas service, vented gas may accumulate, and cause personal injury, death, or property damage due to fire or explosion. Vent a regulator in hazardous gas service to a remote, safe location away from air intakes or any hazardous location. The vent line or stack opening must be protected against condensation or clogging. Under enclosed conditions or indoors, escaping gas may accumulate and be an explosion hazard. In these cases, the Type S402M vent should be piped away from the regulator to a safe location outdoors. 3. On outdoor installations, regulators installed with vents in positions other than vertically down require additional vent protection from the elements. Such protection may be