299H Series Pressure Reducing Regulators
Failure to follow these instructions or
to properly install and maintain this
equipment could result in an explosion
and/or fire causing property damage and
personal injury or death.
Fisher™ regulators must be installed,
operated and maintained in accordance
with federal, state and local codes, rules
and regulations and Emerson Process
Management Regulator Technologies, inc.
if the regulator vents gas or a leak
develops in the system, service to the unit
may be required. Failure to correct trouble
could result in a hazardous condition.
Call a gas service person to service the
unit. Only a qualified person must install
or service the regulator.
Scope of the Manual
This Instruction Manual provides installation,
adjustment and maintenance instructions and parts
ordering information for the 299H Series regulators.
Instructions and parts list for the 67C Series
Instrument Supply Regulators are found in Instruction
Manual D102601X012. Instructions and parts list
for the P590 Series Filters are found in Instruction
Manual D101555X012. Instructions and parts list for
the Type VSX2 slam-shut are found in Instruction
Manual D103695X012. Instructions and parts list for
the Type VSX8 slam-shut are found in Instruction
The 299H Series pressure reducing regulators provide
a broad capacity of controlled pressure ranges and
capacities in a wide variety of distribution, industrial
and commercial applications. A 299H Series regulator
has a pilot integrally mounted to the actuator casing.
Figure 1. 299H Series Pressure Reducing Regulator
The 299H Series regulators can handle inlet pressures
up to 175 psi / 12.1 bar depending on orifice size.
The integral token relief on the Types 299HR and
299HSR regulators is located in the pilot and opens to
relieve minor overpressure.
The Types 299HS and 299HV provide overpressure
or overpressure and underpressure protection
by completely shutting off the flow of gas
to the downstream system. It comes with a
Type VSX2 (299HS) or VSX8 (299HV) slam-shut
device which can be configured for Ovepressure
Shutoff (OPSO) or Overpressure and Underpressure
Shutoff (OPSO/UPSO). The slam-shut device's actions
are independent of the main valve and of variations
to the inlet pressure. The Type VSX2 (299HS) or
VSX8 (299HV) slam-shut device has internal or
external registration. External registration requires a
downstream sensing line.