3-Way Temperature Control Valve

Transcription

1 3-Way Temperature Control Valve l G, Version G and Accessories Charge air cooling Secondary cooling systems Fuel and lube oil preheating Co-generation Engine jacket water GG valve Waste heat boilers Product coolers Product heaters Product condensers GG valve Ease of integration - valve size matches pipe size, resulting in reduced installation time and installation costs to suit installation Low pressure drop - compared to other valve types Small physical size Hand wheel allows manual adjustment of valve up and maintenance G valve compared with a typical equivalent

2 Contents V page 2

3 Overview AMOT G valves are 3-way control valves consisting of a heavy duty rotary valve and either a quarter turn electric or pneumatic of accuracy and repeatability for accurate temperature control and are equally accurate The heavy duty rotor design provides tight temperature control without high maintenance for high vibration service, the AMOT G valves to reciprocating machinery, such as diesel duty actuators are specially reinforced to provide The standard valves are suitable for a variety materials are available for services involving Applications Lubricating oil temperature control is normally temperature is normally measured as close as Jacket water cooling in diverting applications regulates the outlet coolant water temperature sends water to a cooler or bypass loop, accurately The temperature is normally measured at the The intercooler is used to cool high temperature of cooling water through an intercooler, increasing page 3

4 System Types GG Valve For the electric valve, the actuator of the G valve assembly uses an electric motor which rotates in either direction in response to the ON-OFF connected to the rotor shaft and turns the valve rotor clockwise or counter-clockwise, a maximum are incorporated to isolate the electrical supply to the motor when the valve rotor has reached is standard and provides position indication to the The electric actuator is a rugged, compact and lightweight quarter turn actuator having enclosure The actuator is powered by an electric motor Limit switches at each end of stroke disconnect See page 15 for more information on the electric Temperature Probe 8060 GG Valve The electric valve system incorporates the use of an electrically actuated three-way control valve Controller can be either panel or wall mounted is completed with a temperature sensor type 8060 The electric G Valve system is simple to install with standard four core cable, and provides more accurate measurement and control than typical

5 System Types continued Pneumatic GG Valve The pneumatic valve uses a spring return pneumatic actuator and positioner to control the rotation of the valve in response to an input signal from a pneumatic or electro-pneumatic control (3 to 15 psi) to the actuator to correctly position pneumatic control system usually consists of a P+I pneumatic controller, sensor and the necessary air The pneumatic actuator is a rugged, quarter turn, double piston actuator operating on a scotch yoke See page 16 for more information on the The pneumatic valve system incorporates a pneumatically actuated three-way control valve with controller and integral temperature sensor, The pneumatic G valve system is ideal when there is a lack of electricity or when a fail-safe system is SG80 Temperature Controller and Sensor GG Valve Temperature Probe 8060 Temperature Controller Electro-Pneumatic Converter GG Valve The electro-pneumatic valve system combines both electric and pneumatic technology, consisting of a pneumatically actuated three-way control valve with an electro-pneumatic converter, type The probe sends a resistance signal to the The electro-pneumatic system combines the features and functionality of the AMOT electronic page 5

6 Overview of Valve Body Lightweight and compact installation Low pressure drop - enables savings on either valve or pump size High accuracy providing better temperature control 3 80mm - 250mm (3-10 ) 80mm - 200mm (2-8 ) Ductile iron High performance iron, for fresh water, lubricating oils Flourocarbon (Viton, FKM) 100 C (212 F) 5-25 Hz Hz 2 ) 2 ) Hz 2 minute No requirement page 6

7 s of Operation - Electrically Actuated The unique construction of the AMOT G valve provides total indicates valve movement with increasing temperature or ma, valves, on loss of signal the actuator is set up by default to Electric actuator (switched live input) Electric actuator direct acting (4-20mA input) Electric actuator reverse acting (20-4mA input) Cold position Hot position 4mA (cold) 20mA (hot) 20mA (cold) 4mA (hot)

8 s of Operation - Pneumatically Actuated The unique construction of the AMOT G valve the valve port positions most ideally suited to allows either ports 1 or 3 to be selected as the movement with increasing temperature or ma, as Pneumatic actuator direct acting Pneumatic actuator reverse acting 3 PSI (cold) 15 PSI (hot) No signal 15 PSI (cold) 3 PSI (hot) No signal page 8

9 Valve Sizing (Metric units) 3 Valve selection curves for valves o o 2 AMOT type G valves are designed to produce minimal pressure For stable control the valve should be selected so as to provide 0 Size DN (inches) 250 (10) 300 (12) 250 (10)

10 Valve Sizing (English units) Valve selection curves for valves o o 2 AMOT type G valves are designed to produce minimal pressure on the vertical axis, For stable control the valve should be selected so as to provide a Size inches (DN) 0 10 (250) 12 (300) 10 (250) page 10

11 Valve Sizing Some approximate viscosities (cst) of below, based on leading oil manufacturers the grade number is also the viscosity eg ISO the graph should then be multiplied by the original Some approximate viscosities (cst) of SAE oils at Oil SAE 5W SAE 10W 32 SAE 20 SAE 20W 68 SAE SAE Oil 22 SAE 80W SAE 85W page 11

12 Valve Sizing Size DN Kv Cv The G valve is designed to produce recommendation when determining the size of an AMOT G valve is a Kv and 3 Kv = Q SG Dp Q = Flow (m 3 Dp = Pressure drop (bar) There are two other ways that this formula can be used to 3 Q = Kv Dp SG Dp = Q Kv 2 SG Cv = Q SG Dp Dp = Pressure drop (psi) There are two other ways that this formula can be used to 2 Q = Cv Dp Q Dp = SG Cv SG When used in a reasonably balanced pressure system there will be some small amounts of leakage will vary with the pressure difference information if the application is sensitive to leakage rates or if high pressure differences are page 12

13 Dimensions page 13

14 Dimensions continued Valve Type Valve Body Electrically Actuated Pneumatically Actuated NB A B C D E R S T U V W X Y Z R* S* T* U* V* W X Y Z Valve Type 03GGS GGS GGH GGH 04GGS GGS GGH GGH 06GGS GGS GGH GGH GGS GGS GGH GGH 10GGS GGS GGH GGH 12GGS GGS GGH GGH Valve Type Valve Body Electrically Actuated Pneumatically Actuated NB A B C D E R S T U V W X Y Z R* S* T* U* V* W X Y Z Valve Type 03GGS GGS GGH GGH 04GGS GGS GGH GGH 06GGS GGS GGH GGH GGS GGS GGH GGH 10GGS GGS 10GGH GGH 12GGS GGS 12GGH GGH

15 Overview of Electric Actuation Self-locking with minimum backlash in the transmission - prevents valve movement Auxiliary limit switches for user connection can be operated in event of power failure Two torque switches - provide protection in event of actuator overloading 115V Fitted as standard 110 max Quarter turn Contactless half effect Two adjustable screws Fitted as standard Steel, aluminum alloy, aluminum bronze, polycarbonate Dry powder polyester Hz 5g Hz 1g 50 page 15

16 Electronic Positioner There are three LEDs on the terminal box on the side of the actuator, providing clear visual indication demand input signal, and uses this to operate The microprocessor based unit uses the signal from the contactless position sensor to accurately position the actuator, taking into account motor The positioner is split into two parts, housed in the all high voltage circuits are fully encapsulated to which end of stroke corresponds with a The action on sensor fail can be selected The deadband can be increased to aid When necessary, such as after maintenance, the actuator can be recalibrated at the touch Overview of Pneumatic Actuation A rugged quarter turn, double piston, rack and pinion pneumatic actuator with spring G Optional page 16

17 How to Order 06GG S D B S 32 EA B CA -AA 02GG 2 Inch (DN50) High Flow Only Valve 03GG 3 Inch (DN80) Size & 05GG 5 Inch (DN 125) Standard Flow only 06GG 6 Inch (DN150) 08GG 8 Inch (DN200) 10GG 10 Inch (DN250) Standard Flow only S Standard Flow Valve Type H High Flow Valve D Ductile Iron A PN6 B PN10 C PN16 F 125 lb (Flat Face) ASME Flat J 150 lb ASME L 10K JIS Flat M 5K JIS Flat S 12 Port 1 Port 2 23 Port 2 Port 3 31 Port 3 Port 1 21 Port 2 Port 1 32 Port 3 Port 2 13 Port 1 Port 3 Elec Pneu Clockwise Anticlockwise EA - Fitted as Standard EB - P1 - Not Fitted P2 - P3 - Fitted - A B C On Increasing Temperature psi psi Not applicable for Actuator Control Input Signal AA None codes B or C CA EA Pne 00 None Elec Pne Electric -AA -*** Standard Product Customer Special Code Assigned

18 Accessories Fully programmable PID-based control - Relay Can be operated in manual mode - easy maintenance and set up measurement Excellent long term stability Good linearity Can use standard 3-core cable page 18

19 Accessories Good linearity Can use standard 3-core cable controller logic outputs to drive voltages for the crossing switching, relay and logic level inputs and Temperature Probe 8060 Temperature Controller Electro-Pneumatic Converter G Valve Suitable for longer pipe runs Fully adjustable for optimised system operation

20 Accessories Accepts high supply pressure - avoids use of additional regulator Factory set for ease of installation Temperature probe 8060 Temperature controller Electro-pneumatic converter G valve Complete stand alone controller, no other control components required - reduced system cost Easily removable components - low maintenance Good dynamic response - gives optimum engine performance Compatible with every type of pneumatic SG80 Temperature Controller and Sensor G Valve page 20