1190 Low Pressure Gas Blanketing Regulator0 pages

Bulletin 74.1:1190
April 2012

Type 1190 Low-Pressure Gas Blanketing Regulator

W7428

Figure 1. Type 1190 Low-Pressure Gas Blanketing Regulator

Introduction

Features

A Type 1190 low-pressure gas blanketing regulator
reduces a high-pressure gas, such as Nitrogen, to
maintain a protective environment above any liquid
stored in a tank or vessel while the liquid is being
pumped out. Also, when the vessel cools suddenly
causing the vapors inside the vessel to condense,
the gas blanketing regulator replaces the condensed
vapors with the blanketing gas to prevent the internal
vessel pressure from decreasing. In both cases a
slight positive vessel pressure prevents outside air,
moisture, and other contaminants from entering the
vessel and the possible collapse of the vessel walls.

•t Quick-Change Trim Package—Tested trim
packages can be made up and stocked ahead of
time for fast replacement.
•t In-Service Travel Inspection—Standard
indicator assembly with protective cover permits
periodic inspection of plug travel without removing
regulators from service.
•t Easy In-Line Maintenance—Top-entry design
reduces maintenance time and manpower
requirements; trim parts can be inspected,
cleaned, and replaced without removing the main
valve body from the pipeline.
•t Factory-Piped Pilot Supply—Supply pressure to
pilot is supplied from inlet side of the main valve
body through tubing furnished with the regulator.

www.fisherregulators.com

D101962X012

The Type 1190 low-pressure gas blanketing regulator
is used for extremely accurate pressure control on
very low-pressure blanketing systems. The regulator
helps to control emissions and provides protection
against any contamination from atmospheric conditions
by providing a flushing action. The Type 1190 gas
blanketing regulator maintains a positive vessel
pressure thereby reducing the possibility of vessel wall
collapse during pump-out operations.