Victaulic 867-42T-20 Installation, Operation And Maintenance Manual
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Victaulic 867-42T-20 Installation, Operation And Maintenance Manual

Pilot operated, pressure-reducing valve
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INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
867-42T-20 Pilot Operated, Pressure-Reducing Valve
• The 867-42T-20 Pilot Operated, Pressure-Reducing Valve shall be used only in fire protection systems that are designed and installed in
accordance with current, applicable National Fire Protection Association (NFPA 13, 13R, 14, etc.) standards, or equivalent standards, and
in accordance with applicable building and fire codes. These standards and codes contain important information regarding protection of
systems from freezing temperatures, corrosion, mechanical damage, etc.
• These installation instructions are intended for an experienced, trained installer. The installer shall understand the use of this product and
why it was specified for the particular application.
• The installer shall understand common industry safety standards and potential consequences of improper product installation.
Failure to follow installation requirements and local and national codes and standards could compromise system integrity or cause system
failure, resulting in death or serious personal injury and property damage.
REV_C
WARNING
• Read and understand all instructions before attempting to install any Victaulic products.
• Always verify that the piping system has been completely depressurized and drained
immediately prior to installation, removal, adjustment, or maintenance of any Victaulic
products.
• Wear safety glasses, hardhat, and foot protection.
Failure to follow these instructions could result in death or serious personal injury and property
damage.
I-867-42T-20
KEEP THESE INSTRUCTIONS WITH THE
INSTALLED VALVE FOR FUTURE REFERENCE
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I-867-42T-20

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Summary of Contents for Victaulic 867-42T-20

  • Page 1 • The 867-42T-20 Pilot Operated, Pressure-Reducing Valve shall be used only in fire protection systems that are designed and installed in accordance with current, applicable National Fire Protection Association (NFPA 13, 13R, 14, etc.) standards, or equivalent standards, and in accordance with applicable building and fire codes.

  • Page 2: Table Of Contents

    I-867-42T-20 / Pilot Operated, Pressure-Reducing Valve / Installation, Operation, and Maintenance Manual TABLE OF CONTENTS HAZARD IDENTIFICATION Hazard Identification ........1 Definitions for identifying the various hazard levels are provided below .

  • Page 3: Safety Instructions

    I-867-42T-20 / Pilot Operated, Pressure-Reducing Valve / Installation, Operation, and Maintenance Manual SAFETY INSTRUCTIONS INTRODUCTION WARNING NOTICE • An experienced, trained installer • Drawings and/or pictures in this manual may be exaggerated for shall install this product in clarity. accordance with all instructions.

  • Page 4: Pressure And Flow Ratings

    I-867-42T-20 / Pilot Operated, Pressure-Reducing Valve / Installation, Operation, and Maintenance Manual PRESSURE AND FLOW RATINGS The 867-42T-20 is rated for the following pressure and flow capacities detailed in Table 1 . NOTE: Contact Victaulic if the system has differential greater than 175 psi/12 Bar .

  • Page 5: Installation

    INSTALLATION A typical installation of the 867-42T-20 features a pilot valve for the reduction of water pressure from a high upstream value to a preset lower downstream value, regardless of fluctuating upstream pressure or flow . The actuator design ensures quick and smooth valve action .

  • Page 6: Operation

    OPERATION The 867-42T-20 reduces water pressure from a high inlet pressure to a lower, pre-set outlet pressure . The outlet set pressure can be adjusted with the pilot valve adjusting screw (Figure 2, call out 5) . The valve operates under both flow and static conditions . The pressure-reducing pilot valve (Figure 2, call out 4) senses changes in outlet pressure (Figure 2, call out 6) and modulates the control valve to maintain the pre-set outlet pressure .

  • Page 7: Startup

    I-867-42T-20 / Pilot Operated, Pressure-Reducing Valve / Installation, Operation, and Maintenance Manual MAINTENANCE AND INSPECTION TESTS STARTUP When performing this procedure, refer to Figure 2 . NOTICE Open downstream appurtenance device(s), creating a flow equal to the greatest system demand .
  • Page 8 For complete contact information, visit victaulic.com I-867-42T-20 9680 REV C UPDATED 07/2022 VICTAULIC IS A REGISTERED TRADEMARK OR TRADEMARK OF VICTAULIC COMPANY AND/OR ITS AFFILIATED ENTITIES IN THE UNITED STATES AND/OR OTHER COUNTRIES. © 2022 VICTAULIC COMPANY. ALL RIGHTS RESERVED.

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