RODADEACO. Diesel Engine Air Intake Shutoff Valves. Model RDB3 Compact Butterfly Valve. by AMOT. Overview. Typical Applications

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1 Diesel Engine Air Intake Shutoff Valves Model RDB3 Compact Butterfly 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 RDB3 Compact Butterfly Valve is a positive spring actuated air intake shutoff valve that provides emergency overspeed shutdown of a diesel engine. The RDB3 Compact Butterfly Valve can be triggered to close, which starves the engine of air and shuts down the engine. RDB3 Compact Butterfly Valve Typical Applications Pickup trucks Drilling support equipment Well servicing equipment Refinery support equipment Bulk haulers and tankers Generator sets Mining equipment Construction equipment Emergency response vehicles and equipment Aircraft support equipment Agriculture equipment Key Features and Benefits Easy to install and maintain Lightweight, compact design Corrosion resistant aluminum, stainless steel and brass construction Used in manual and automatic actuation systems: - Electric - Pneumatic - Mechanical Wide variety of installation kits for most installations RODADEACO by AMOT DS-RO-RDB Rev3

2 Operation The Model RDB3 is a compact butterfly design air intake shutoff valve available with electric, pneumatic, or mechanical actuation. Actuation of the Model RDB3 closes the valve s sealing element which shuts off intake air flow into the engine. The RDB3 can be used in fully automatic or manual shutdown systems. Specifications Standard materials: Valve body Aluminum Gate arm Sealing element Seals Solenoid housing Plated steel Brass Nitrile/Silicon/Teflon Plated steel Net weights Manual actuated 3.5 lbs 1.5 kg (incl actuator): Standard solenoid actuated 4.5 lbs 2 kg Intake air temperature range: Standard valve -40 F to 221 F -40 C to 105 C Ambient air temperature range: Standard valve -40 F to 221 F -40 C to 105 C Electric solenoid Standard solenoid actuation: Nominal 12 VDC power requirement 50 amp pull in 1.0 amp hold Cycle rate 4 activations per minute Nominal 24 VDC power requirement 36.4 amp pull in 0.5 amp hold Cycle rate Refer to the Roda Deaco System Selection Guide to determine the appropriate system and actuation for your application. 6 activations per minute Pneumatic cylinder Recommended pressure 90 psi psi 6.2bar bar actuation: Minimum pressure 80 psi 5.5 bar Maximum pressure 150 psi 10.3 bar Manual actuation: Mechanical pull to release 15 lbs 67 Newton page 2

3 Valve Selection The RDB3 Compact Butterfly Valve can be used in applications where the air intake line is 2 1 /4 to 3 1 /2 inches (57-89mm) in diameter. The RDB3 Butterfly 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. Note that the RDB3 Compact Butterfly Valve is manually reset. Front view of electrically actuated valve To accommodate the installation requirements for the wide variety of diesel engine applications, the size and attachment types on the valve body and the valve cover are specified separately. The valve body is available with hose clamp connections only. The valve cover attachments are available in several styles including: hose, O-ring, V-clamp, flange, and engine specific adapters. valve cover valve body Profile view of electrically actuated valve Valve Size Standard Cover Attachment Sizes 2 1 /4 57 mm 2 1 /2 64 mm 2 7 /8 73 mm 3 76 mm 3 1 /2 89 mm Standard Body Attachment Sizes 2 3 /4 70 mm 2 7 /8 73 mm 3 76 mm 3 1 /8 79 mm The RDB3 Compact Butterfly Valve cover is available in several standard sizes for intake air lines ranging from 2 1 /4 to 3 1 /2 inches (57-89mm) in diameter. Standard sizes for hose, V-clamp, and O-ring attachments are listed to the left. Additional sizes are available to meet specific application requirements. The RDB3 Compact Butterfly Valve body is available with a hose clamp attachment in sizes from 2 3 /4 to 3 1 /8 inches (70-79 mm). page 3

4 Valve Selection Continued Valve Attachment Mechanism The hose attachment is the only attachment available for the body side of the RDB3 Compact Butterfly Valve. The hose attachment is also the standard attachment mechanism for the cover side of the valve. However, the cover side has additional attachments 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. x Extended Depth Hose x V-Clamp Attachment Heavy duty V-style ring clamp used to clamp valve to metal intake lines. Several types of V-clamp connections are available. Female V Clamp x Flat Face V Clamp x Male Notched V Clamp x O-Ring Attachment Space saving single or dual O-Ring attachments are available. O-Rings are used to seal rigid air intake line connections. Exterior Single O-Ring x Internal Dual O-Ring x Exterior Dual O-Ring x O-Ring Receiver Cup x Flange Attachment Flange attachments on the valve are available to secure the valve to the engine. Square Flange x Special Attachments Additional attachments are available on request. Trapezoidal Flange x page 4

5 Valve Features Selection Valve Actuation Type The RDB3 Compact Butterfly Valve has three actuation methods: electric, pneumatic, 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 Electric Actuation The electrically actuated RDB3 is an energize-toclose valve. It operates using either 12 VDC or 24 VDC power. The electrically actuated RDB3 valve is reset manually. The electrically actuated RDB3 valve is designed for use in the systems indicated below: Automatic Electric Overspeed RPM Detection with Manual Override Manual Electric System Pneumatic Actuation Pneumatic Actuation The pneumatically actuated RDB3 is designed for mechanical latching in the open position (engine run) and air pressure actuated closure. The pneumatically actuated RDB3 valve is reset manually. The pneumatically actuated RDB3 valve is designed for use in the systems indicated below: Automatic Electric Overspeed RPM Detection with Pneumatic Actuation Manual Electric/Pneumatic System Manual Pneumatic System Mechanical Actuation The mechanically actuated RDB3 operated by an operator using a remote cable pull system. The mechanically actuated RDB3 is reset manually. The mechanically actuated RDB3 valve is designed for use in the systems indicated below: Remote Cable Actuated System Direct Actuated Valve Mechanical Actuation page 5

6 Valve Features Selection Continued Valve Intake Air Temperature Ratings Temperature range Standard range -40 F to 221 F -40 C to 105 C The RDB3 Compact Butterfly Valve can be used on: Intake lines of naturally aspirated engines or downstream of a turbocharger intercooler or aftercooler where air intake line temperatures may reach up to 221 F (105 C) at the valve. Actuation Kits Electric Actuation Kit Manual Pneumatic Actuation Kit Electric Pneumatic Actuation Kit Manual Pull Cable Actuation Kit 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: Voltage control module Relays Circuit breaker Toggle switch 3-Way pneumatic solenoid Pneumatic hose and fittings Cable with T-handle Installation Kits Simple Hose Kits 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. Single Elbow Kit with Multiple Hose Double Elbow Kit Complex 3 Elbow Kit page 6

7 Dimensions Electrically Actuated Valve Pneumatically Actuated Valve Mechanically Actuated Valve page 7

8 How to Order ORDER INFORMATION SHEETT CUSTOMER INFORMATION NAME TITLE OFFICE PHONE COMPANY MOBILE ADDRESS FAX APPLICATION INFORMATION (Feel free to send pictures in addition to completion of form.) Application Stationary Mobil Marine Quantity for this application Equipment Application Equipment Name Equipment Model Engine Information Make Model Year Serial/VIN No Turbocharger and Intake Air Cooling Information Intercooler (Air to Air cooler mounted with engine radiator) No air cooling after turbocharger Aftercooler (liquid cooler in the engine) No turbocharger the engine is natural aspirated Air Intake Line Information: (Note: The air intake shutoff valve is usually installed at the inlet to the engine.) Number of Inlet lines Turbocharger Boost pressure Intake line air temperature (if known) Inlet Line material: Metal Pipe: outside diameter Rubber Hose: inside Diameter Inlet Line or Elbow Part Number: Attachment mechanism of Air Intake Line to the inlet to the engine: Hose Standard Extended V-Clamp Flat face Female Male Notched O-Ring Internal External Receiver Cup Single O-ring Dual O-Ring Flange Round Square Trapezoid Other Number of Bolts Other (Please specify and include photos) ENGINE OVERSPEED SAFETY SYSTEM INFORMATION Refer to the Roda Deaco System Selection Guide for information about the system listed below. Automatic RPM Overspeed Detection and Shutdown Systems with manual Override Electronic RPM Detection with Electric Actuated Valve and Electronic RPM Detection with Pneumatic Actuated Valve and Manual Override: 12 vdc 24 vdc Manual Override: 12 vdc 24 vdc Manual Actuated Systems and Valves Electric Actuation System 12 vdc 24 vdc Electric Switch with Pneumatic Valve 12 vdc 24 vdc Pneumatic System Cable System: 10ft 20ft 30ft Direct Manual Valve Additional Valve Features (Refer to valve data sheet for availability) Proximity Switch Valve Position Indication Pneumatic Reset Roda Deaco Tel (780) Fax (780) Note that many engines are available in different configurations in different equipment. Some examples include: turbocharged, turbocharged with air to air intercooler, turbocharged with a liquid aftercooler on the engine, twin turbocharger arrangements and naturally aspirated engines. Roda Deaco has a broad array of fully automatic and manual shutoff systems. The systems have sensors, switches, valves, actuation kits and hundreds of different installation kits available to facilitate installation of systems. When ordering, please complete the Roda Deaco Ordering Information form shown on the left. The form is available electronically on the Roda Deaco web site, by contacting your local representative or Roda Deaco Customer Service. See the back of this datasheet for contact information. Valve Model Code Valve Body Selection Valve Feature Selection Example Code RDB H 2875 HB - E1 L A Code Description Valve Family RDB3 Valve Body Side Attachment Size (additional sizes available) Valve Body Side Attachment Mechanism Valve Cover Side Attachment Size (additional sizes available) Valve Cover Side Attachment Mechanism (additional attachments available) Valve Actuation Type Inlet Air Line Temperature Valve Options Type RDB3 Compact Butterfly Valve Body Attachment Outer Diameter Size - inches /4 (70 mm) /8 (73 mm) (76 mm) /8 (79 mm) Body Attachment Mechanism H Connection Cover Attachment Outer Diameter Size - inches /4 (57 mm) /2 (64 mm) /8 (73 mm) (76 mm) /2 (89 mm) Cover Attachment Mechanism HB Connection UB O-Ring internal dual Actuator Type Mech M0 Mechanical Pneu PC Pneumatic Air Pressure to Close Elec E1 12 VDC solenoid E2 24 VDC solenoid Inlet Air Temperature L -40ºF - 221ºF (-40ºC - 105ºC) Options A No Options The contents of this publication are presented for informational purposes. While every effort has been made to ensure their accuracy, they are not to be construed as warranties or guarantees, express or implied, regarding the products or services described herein or their use or applicability. The purchaser and end user are responsible for analyzing all aspects of their application and using their own judgment in the final selection, use, and maintenance of the system and components. The purchaser and end user are also responsible for assuring that all performance, safety and warning requirements of the application are met. Roda Deaco, AMOT, Roper Industries, or any of their affiliated entities assume no responsibility for the selection, use, or maintenance of any product. page 8

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