Product Overview

These genuine Fisher repair kits cover diaphragm and accessory replacement for Fisher Type 99 series pilot-operated gas pressure regulators, including kit numbers 99-901, 99-903, 99-503 and 99-513. Each kit supplies the soft goods required for a routine overhaul of the DN50 regulator body.

Key Features

• Complete elastomer set: diaphragm, o-rings and gaskets for leak-tight reseating

• Fits Fisher Type 99 regulators with DN50 threaded or flanged end connections

• Soft parts suitable for natural gas, LPG, air and inert gas service

• Original Fisher part numbering ensures exact interchangeability

• Supports on-line maintenance without replacing the regulator body

Typical Applications

Typical applications include city gate stations, industrial gas trains, LPG vaporizer downstream regulation and boiler fuel skids where Type 99 regulators hold outlet pressures from a few millibar up to 6.9 bar.

Selection Guide

Confirm the regulator serial number and kit number before ordering; if the nameplate is unreadable, provide the inlet and outlet sizes and set pressure so the correct kit can be matched. Stock kits ship within one business day.