Emerson Fisher 299H Series Instruction Manual
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Emerson Fisher 299H Series Instruction Manual

Pressure reducing regulators
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Instruction Manual
Form 5497
November 2002
299H Series Pressure Reducing Regulators
Introduction
Installation, operation, and maintenance
procedures performed by unqualified
personnel may result in improper adjust-
ment and unsafe operation. Either condi-
tion may result in equipment damage or
personal injury. Use qualified personnel
when installing, operating, and maintain-
ing the 299H Series regulators.
Scope of Manual
This instruction manual provides installation,
adjustment, and maintenance instructions, and a parts
list for the 299H Series regulators. Complete
instructions and parts lists for the 67 Series filtered
pilot supply regulator, and other Fisher equipment are
found in separate instruction manuals.
Description
The 299H Series pressure reducing regulators provide
a broad capacity for 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.
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 Type 299HR regulator is
located in the pilot and opens to relieve minor
overpressure conditions.
http://www.fisher-china.com
W7513
Figure 1. 299H Series Pressure Reducing Regulator
Specifications
Since a pilot-operated regulator is
constructed of both a pilot and a main
valve, do not exceed the maximum inlet
pressure shown on the nameplate.
Specifications for 299H Series constructions are given
on page 2. Some specifications for a given regulator
as it originally comes from the factory are stamped on
a nameplate located on the actuator upper casing.
299H Series

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  • Page 1 http://www.fisher-china.com 299H Series Instruction Manual Form 5497 November 2002 299H Series Pressure Reducing Regulators Introduction Installation, operation, and maintenance procedures performed by unqualified personnel may result in improper adjust- ment and unsafe operation. Either condi- tion may result in equipment damage or personal injury.

  • Page 2: Specifications

    299H Series http://www.fisher-china.com Specifications Pressure Control Accuracy (Fixed Factor)(PFM) Available Configurations ±1% of absolute control pressure Type 299H: Pilot-Operated pressure reducing regulator with a pilot integrally mounted to the Minimum Differential Pressure For Full Stroke actuator casing 1.5 psi (0,10 bar) Type 299HR: A Type 299H with a token internal relief valve to relieve minor overpressure caused Control Line Connections...

  • Page 3: Principle Of Operation

    http://www.fisher-china.com 299H Series OUTLET 3/4-INCH NPT DOWNSTREAM CONTROL LINE A7269_1 CONNECTION EXTERNAL REGISTRATION 3/4-INCH NPT DOWNSTREAM CONTROL LINE PILOT INLET CONNECTION SUPPLY SCREEN INTERNAL REGISTRATION A7268_1 3/4-INCH NPT ATMOSPHERE PRESSURE DOWNSTREAM LOADING PRESSURE CONTROL LINE OUTLET PRESSURE CONNECTION A7270_1 INLET PRESSURE DUAL REGISTRATION Figure 2.

  • Page 4: Installation

    299H Series http://www.fisher-china.com pressure exceeds the pilot spring setting and forces the If the regulator is exposed to an over- diaphragm down, closing the orifice (C). The loading pressure condition, it should be in- pressure acting on the main diaphragm (E) bleeds to the spected for any damage that may have downstream system through a bleed restriction (H).

  • Page 5: Maintenance

    http://www.fisher-china.com 299H Series the main valve (key 17) in order to install a pilot supply and an O-ring to block the port (G in figure 2) between line from a desired remote location into the pilot. the lower diaphragm chamber and pilot diaphragm chamber.
  • Page 6 299H Series http://www.fisher-china.com tolerances, etc.), use only replacement parts (key 11) and remove the diaphragm post, pressure manufactured or furnished by Fisher. equalization spring (key 7), diaphragm head (key 81), diaphragm (key 8), the second diaphragm head (key 81), and diaphragm pad (key 80). Inspect the diaphragm parts for damage and replace if necessary.
  • Page 7 http://www.fisher-china.com 299H Series opening to the top of the spring seat (see figure 3). 1. Remove or loosen the pilot supply tubing (key 21). When tightening the two hex nuts, use care not to rotate 2. Remove the inlet fitting (key 47), remove the four the diaphragm post, which may damage the post.

  • Page 8: Parts List

    299H Series http://www.fisher-china.com parts, unscrew the hex nut (key 37) and separate the when ordering parts. If construction changes are made in the field, be sure that the nameplate is also changed parts: washer (key 38), diaphragm post (key 39), to reflect the most recent construction.
  • Page 9 http://www.fisher-china.com 299H Series Description Part Number Description Part Number Connector (continued) Bleed Restriction, steel Ductile Iron Bodies 0.044-inch (1,1 mm) red (standard) 17A2029X012 Without filter and pilot supply regulator require 2 connectors 0.071-inch (1,8 mm) green 17A2030X012 0.082-inch (2,1 mm) blue 17A7277X012 All other combinations of filter and/or pilot supply Optional P590 Series Filter...
  • Page 10 299H Series http://www.fisher-china.com HEX NUTS APPLY CONSTANT HAND PRESSURE SPRING SEAT UPPER SPRING CASE CLOSING SPRING DIAPHRAGM POST LOCKING DOWN THE SPRING SEAT TO FACILITATE INSTALLING THE HEX NUTS A7275 TYPE 299H PILOT (WITHOUT RELIEF VALVE) A7278 EXTERNAL REGISTRATION A7276 A7279 TYPE 299HR PILOT WITH TOKEN RELIEF VALVE INTERNAL REGISTRATION...
  • Page 11 http://www.fisher-china.com 299H Series 3/4-INCH NPT A7277 DOWNSTREAM CONTROL LINE CONNECTION A7281 A7280 DUAL REGISTRATION 299H SERIES PILOT TRIM Figure 5. 299H Series Interior Assembly (continued) http://www.fisher-china.com...
  • Page 12 299H Series http://www.fisher-china.com A7282 299H SERIES EXTERIOR VIEW A7283 A7284 TUBING AND FITTINGS WITH TUBING AND FITTINGS WITH OPTIONAL TYPE P590 FILTER OPTIONAL 67 SERIES PILOT SUPPLY REGULATOR Figure 6. 299H Series Exterior Assembly http://www.fisher-china.com...
  • Page 13 http://www.fisher-china.com 299H Series January 2000 Errata Sheet 299H Series Pressure Reducing Regulators Form 5497, June 1999 The 299H Series is now available with an integral slam-shut device. Add the following information to the 299H Series Instruction Manual, form 5497. • Add the following paragraph to the Description section on page 1. The Type 299HS provides over or over and underpressure protection by completely shutting off the flow of gas to the downstream system.

  • Page 14: Available Configurations

    299H Series http://www.fisher-china.com • Add the following information to the Specifications section on page 2. Specifications Available Configurations Maximum Outlet Pressure 66 psig (4,6 bar) Type 299HS: Same as the Type 299H with a Type VSX-2 shutoff valve which provides over or over Maximum Set Pressure for Type 299HS and underpressure protection.
  • Page 15 http://www.fisher-china.com 299H Series • Add the following step between steps 1 and 2 of the Startup procedure on page 5. On a Type 299HS the Type VSX-2 is shipped in the tripped position and will need to be reset. If the Type VSX-2 is a high trip only, it can be reset before starting the regulator.
  • Page 16 299H Series http://www.fisher-china.com • Add the following table to the instruction manual. Table 2. Type VSX-2 High and Low Trip Pressure Ranges . c . . c . . c . . c . a l i , e l i t a f n i •...
  • Page 17 http://www.fisher-china.com 299H Series • Add the following sections after the Adjustment section on page 5. Type VSX-2 Trip Adjustment Note An adjustment tool is included with the Type VSX-2 (see figure 8). Use only this tool to make adjust- ments to the Type VSX-2. To make adjustments, the overpressure trip spring is found under the outer adjusting screw and the underpressure trip spring is found under the inner adjusting screw.
  • Page 18 299H Series http://www.fisher-china.com • Add the figure below. E0098 Figure 7. Type VSX-2 Assembly http://www.fisher-china.com...
  • Page 19 http://www.fisher-china.com 299H Series • Add the figure below. • Add the following to the Parts List on page 9. Type VSX-2 Slam-Shut Device (figure 7) Description Part Number VSX-2 Module FA196247X12 USE THIS END FOR Upper O-ring T13769T0012 UNDERPRESSURE TRIP ADJUSTMENT Lower O-ring T13772T0012 Set Screw (4 required)
  • Page 20 http://www.fisher-china.com 299H Series http://www.fisher-china.com...

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Fisher 299hr

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