Diesel Engine Air Intake Shutoff Valves - .Diesel Engine Air Intake Shutoff Valves Model RDS1 Swing

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  • Diesel Engine Air Intake Shutoff Valves

    Model RDS1 Swing Gate Valve

    Overview

    If flammable gas or vapor is present in the atmosphere surrounding a diesel engine, it can be ingested into the engine and become an ungoverned fuel supply. This ungoverned fuel can result in runaway engine overspeed, potentially leading to dangerous mechanical failure or an explosion.

    The Roda Deaco RDS1 Swing Gate Valve is a compact air intake shutoff valve that provides emergency overspeed shutdown of a diesel engine. The RDS1 Swing Gate Valve can be triggered to close, which starves the engine of air and shuts down the engine.

    Key Features and Benefits

    lEasy to install and maintain

    lLightweight, compact design

    l Corrosion resistant aluminum and stainless steel construction

    lUsed in manual and automatic actuation systems:

    - Electric

    - Mechanical

    lWide variety of installation kits for most installations

    Typical Applications

    l Drilling rigs (onshore & offshore)

    lDrilling support equipment

    lWell servicing equipment

    lRefinery support equipment

    lBulk haulers and tankers

    l Generator sets

    l Mining equipment

    lConstruction equipment

    lEmergency response vehicles and equipment

    lAircraft support equipment

    lWork boats

    l Barges

    l Agriculture equipment

    www.rodadeaco.comDS-RO-RDS1-0809-Rev3

    RODADEACO by AMOT

    RDS1 - Electrically Actuated Valve

  • page 2

    Diesel Engine Air Intake Shutoff Valves - RDS1

    DS-RO-RDS1-0809-Rev3 www.rodadeaco.com

    Valve SpecificationsStandard materials: Valve body Aluminum

    Gate arm Plated steel

    Sealing element Floating phenolic disc

    Seals Silicon standard

    Solenoid housing Plated steel

    Net weights Manual actuated 2.5 lbs 1.2 kg

    (incl actuator): Standard solenoid actuated 3.5 lbs 1.6 kg

    Intake air temperature range: Standard valve -40F to 221F -40C to 105C

    Ambient air temperature range: Standard valve -40F to + 257F -40C to +125C

    Electric solenoid Standard solenoid

    actuation: Nominal 12 VDC power requirement 70.5 amp pull in 0.9 amp hold

    Nominal 24 VDC power requirement 36.4 amp pull in 0.5 amp hold

    Cycle rate 6 activations per minute

    Manual actuation: Mechanical pull to release 15 lbs 67 Newton

    Operation

    The Model RDS1 is a compact swing gate design air intake shutoff valve available with either electric or mechanical actuation. Actuation of the Model RDS1 closes the valves sealing element which shuts off intake air flow into the engine. The RDS1 can be used in fully automatic or manual shutdown systems.

    Refer to the Roda Deaco Selection Guide to determine the appropriate system and actuation for your application.

  • page 3

    Diesel Engine Air Intake Shutoff Valves - RDS1

    DS-RO-RDS1-0809-Rev3 www.rodadeaco.com

    Valve Selection

    The RDS1 Swing Gate Valve is available in several standard sizes for intake air lines ranging from 11/2 to 2 inches (38 to 51 mm) in diameter. Standard sizes for hose and V-clamp attachments are listed to the left. Additional sizes are available to meet specific application requirements.

    Standard Attachment Sizes

    1 1/2 38 mm

    1 5/8 41 mm

    1 3/4 44 mm

    1 7/8 48 mm

    2 51 mm

    The RDS1 Swing Gate Valve can be used in applications where the air intake line is 1/2 to 2 1/2 inches (15 - 65 mm) in diameter. The RDS1 Swing Gate Valve can be mounted in vertical or horizontal orientations and airflow through the valve can be in either direction.

    When specifying the valve, note the clearance requirements for the valve with the geometry of the engine and intake line for your application.

    To accommodate the installation requirements for the wide variety diesel engine applications, the size and attachment types on the valve body and the valve cover are specified separately. The valve attachments are available in several styles including: hose, O-ring, flange, and engine specific attachment.

    Front view of valve

    Profile view of valve

    Valve Size

  • page 4

    Diesel Engine Air Intake Shutoff Valves - RDS1

    DS-RO-RDS1-0809-Rev3 www.rodadeaco.com

    Valve Selection Continued

    Valve Attachment Mechanism

    The hose attachment is the standard attachment mechanism. However, additional attachments are available including O-Ring, V-Clamp, Flange, and engine specific adapters. Examples are

    shown below. To accommodate the installation requirements for the wide variety of diesel engine applications, the size and connection types on the valve body and the valve cover are specified separately.

    Hose Attachment

    Uses sections of flexible hose and band clamps to attach the valve to intake line.

    V-Clamp AttachmentHeavy duty V-style ring clamp used to clamp valve to metal intake lines. Several types of V-clamp connections are available.

    O-Ring AttachmentSpace saving single or dual O-Ring attachments are available. O-Rings are used to seal rigid air intake line connections.

    Flange AttachmentFlange attachments on the valve are available to secure the valve to the engine.

    Special AttachmentsAdditional attachments are available on request.

    Standard Hose x Standard Hose

    Exterior Single O-Ring x Exterior

    Single O-Ring

    Dual O-Ring x O-Ring Receiver Cup

    Male V Clamp x Female V Clamp

    Interior Dual O-Ring x Interior Dual O-Ring

    Extended Depth Hose x Extended Depth Hose

    Flat Face V Clamp x Standard Hose

    Flange x Flange Interior Dual O-Ring x Flange

    Female V Clamp x Male Notched V Clamp

  • page 5

    Diesel Engine Air Intake Shutoff Valves - RDS1

    DS-RO-RDS1-0809-Rev3 www.rodadeaco.com

    Valve Features Selection

    Valve Actuation TypeThe Diesel Engine Air Intake Shutoff Valve has two actuation methods: electric and mechanical. Please refer to the Roda Deaco System Selection Guide for complete descriptions of the systems to help determine the proper actuation required for your application.

    Electric Actuation

    The electrically actuated RDS1 is an energize-to-close valve. It operates using either 12 VDC or 24 VDC power. The valve will automatically reset after the engine stops and power is removed. The electrically actuated RDS1 valve is designed for use in the systems indicated below:

    l Automatic Electric Overspeed RPM Detection with Manual Override

    l Manual Electric System

    Mechanical Actuation

    The mechanically actuated RDS1 can be operated by using either a remote cable pull system or direct operator action on the valve. The mechanically actuated RDS1 is reset manually. The mechanically actuated RDS1 valve is designed for use in the systems below:

    l Remote Cable Pull Actuated System

    l Direct Actuated Valve

    The RDS1 Swing Gate Valve can be used on intake lines of naturally aspirated or turbo-charged engines where air intake line temperatures do not exceed 221F (105C) at the valve.

    Valve Intake Air Temperature Rating

    Temperature range

    Standard range -40F to 221F -40C to 105C

    Pneumatic Reset

    A pneumatic cylinder can be added to the valve to provide remote reset capability for mechanically actuated valves.

    Valve Feature Option

    Electric actuation

    Mechanical actuation

    pull cable mounting bracket

  • page 6

    Diesel Engine Air Intake Shutoff Valves - RDS1

    DS-RO-RDS1-0809-Rev3 www.rodadeaco.com

    Actuation Kits

    Actuation kits are provided with each system sold. The actuation kit contains hardware required to properly install and integrate the specified shutdown system into the diesel engine application. The kits, specific for each type of system and application, can include items such as:

    l Voltage control module

    l Relays

    l Circuit breaker

    l Toggle switch

    l Cable with T-handle

    Installation kits are also provided with each system sold. The installation kit contains the hardware required to facilitate the installation of the Air Intake Shutoff Valve into a diesel engine air intake line. Roda Deaco has hundreds of different installation kits designed to meet specific engine model and application requirements. The kits can range from hose with clamps to custom intake pipes, elbows, flanges, brackets, etc.

    Installation Kits

    Double Elbow Kit Complex 3 Elbow Kit

    Single Elbow Kit with Multiple Hose

    Simple Hose Kits

    Electric Pneumatic Actuation Kit

    Manual Pneumatic Actuation Kit Manual Pull Cable Actuation Kit

    Electric Actuation Kit

  • page 7

    Diesel Engine Air Intake Shutoff Valves - RDS1

    DS-RO-RDS1-0809-Rev3 www.rodadeaco.com

    Dimensions

    Electrically Actuated Valve

    Mechanically Actuated Valve

    Clearance Dimensions

    A* B C D E

    1.500 (38)

    2.750 (70)

    3.750 (95)

    2.750 (70)

    0.500 (13)

    1.750 (44)

    2.625 (67)

    3.625 (92)

    2.625 (67)

    0.375 (9)

    2.000 (51)

    2.500 (64)

    3.500 (89)

    2.500 (64)

    0.250 (6)

    Clearance Dimensions

    A* B C D E

    1.500 (38)

    4.500 (113)

    0.750 (19)

    2.375 (60)

    0.500 (13)

    1.750 (44)

    4.375 (110)

    0.625 (16)

    2.250 (57)

    0.375 (9)

    2.000 (51)

    4.250 (106)

    0.500 (13)

    2.125 (54)

    0.250 (6)

    Dimension in inches (mm)

    Dimension in inches (mm)

    DE4.750 (171)

    1.00 (25)

    3.250 (83)

    4.20 (108)

    A

    B

    C

    8.00 (203)

    B

    A

    C

    D E1.00 (25)

    3.250 (83)

    4.375 (111)

    6.750 (171)

    * Hose Attachment Size Inches (mm)

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