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Eclipse PulsePak Valve Train Segments, V1, Installation Guide 791-2, 8/10/2010
Introduction
Product Description
The Pulsepak Valve Train Segments are sub-assemblies
used for pulse firing applications globally. Standardization
results in quicker throughput and a reduction of errors
from the beginning stages of quotations through the
stages of commissioning, operation and maintenance.
These segments include:
Gas:
• Two safety shut off valves with flow adjustment
NOTE:
Maximum number of cycles for the safety
shutoff valves is 1,000,000. It is recommended to
replace the valves at 90% of that cycle capacity. A
cycle counter can be found in the zone panel or
through the T400 Flame Safety Unit.
• Ratio regulator with low fire bypass
Ŷ
Ratio regulator may be adjustable for gas rich
situation. Verify that the bias adjustment on the
ratio regulator is set for a safe setting.
• Permanent and ready means for leak testing
• Outlet manual isolation valve
• Visual position indicators
• Quick electrical disconnects
Air:
• Control valve with flow adjustment
NOTE:
Maximum number of cycles for the control
valve is 1,000,000. It is recommended to replace the
valves at 90% of that cycle capacity. A cycle counter
can be found in the zone panel or through the T400
Flame Safety Unit.
• Low fire bypass with flow adjustment
• Quick electrical disconnect
To fully meet the requirements of local codes, these sub-
assemblies will require additional components, such as a
drip leg, strainer, filter, dryer, regulator, high and low gas
pressure switches, air flow switch, and overpressure
protection depending on the end-use application.
Where this document refers to NFPA 86, it is for the 2007
edition. For EN 746-2, it is for the 1997 edition with
foresight of the 2006 draft document.
Audience
This manual has been written for personnel already
familiar with all aspects of gas valves, safety devices and
piping components, also referred to as “the valve train”.
These aspects are:
• Design / Selection
• Use
• Maintenance
• Safety
The audience is expected to be qualified and have
experience of this type of equipment and its working
environment.
Purpose
The purpose of this manual is to make sure that the design
of a safe, effective and trouble-free combustion system is
carried out.
PulsePak Documents
Installation Guide No. 791-2
• This document
Datasheets No. 791-3 and 791-4
• Available for NFPA and CE models
• Required to complete design calculations in this
guide
Design Guide No. 862
• Used with datasheets to design your valve train
Related Documents
• EFE 825 (Combustion Engineering Guide)
• Eclipse Bulletins and Information Guides: 791, 862
CAUTION
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