Emerson Fisher Type 289P Instrukcja obsługi
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Instruction Manual
Form 5481
February 2009
Type 289P Pilot-Operated Relief Valve
W6834
Figure 1. NPS 1 Type 289P Pilot-Operated Relief Valve
Introduction
Scope of Manual
This manual describes and provides instructions
and parts lists for the Type 289P pilot-operated relief
valve. Instructions and parts lists for any other Fisher
equipment used with this relief valve will be found in
separate manuals.
Product Description
The Type 289P pilot-operated relief valve is used to
provide protection from overpressuring a downstream
system. This relief valve is suitable for service on
natural gas, air, propane, or any other operating
medium not corrosive to the internal parts. Smooth
W3167-2
Figure 2. NPS 2 Type 289P Pilot-Operated Relief Valve
opening action minimizes system pressure surges
during emergency action. Very little build-up over set
pressure is required to completely open the main valve
®
for maximum relief capacity. The external control line
provides quick, accurate pressure registration.
Specifications
Some of the specifications for a given relief valve as
it comes from the factory appear on the nameplate
attached to the Type 289P main valve spring case.
Other specifications appear on the Type 6358B or
6365 pilot spring case.
www.emersonprocess.com/regulators
Type 289P