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Amot Model GG:

Three way actuated valve

(electrically or pneumatically)

Solving temperature control

  • Compact 3 Way Rotary Valve

  • Size DN25 to DN500

  • Flows up to 3000 m3/h

  • Marine and Industrial applications​

AMOT Model G rotary 3-way actuated control valves provide a high degree of accuracy for precise temperature control in both mixing and diverting applications over a wide flow range and a variety of fluids. The durable valve is designed to withstand high-vibration applications and is easy to maintain.



For engines, turbines, gearboxes and heat exchangers:

  • Charge air cooling

  • Secondary cooling systems

  • Fuel and lube oil preheating

  • Co-generation

  • Engine jacket water

For refineries, chemical plants and oil reporduction:

  • Waste heat boilers

  • Product coolers

  • Product heaters

  • Product condensers

Features and Benefits:

  • Easy to integrate into existing systems

  • Flexible design - ports can be configured to suit installation

  • Simplified set up and maintenance

  • Hand wheel allows manual adjustment of valve (optional on pneumatic valve)

G-valves are delivered in both standard- and high flow-version. The values in the table below are for the high flow-version. 

Compact by Design

Designed small for big solutions

  • Compact design opens new piping design possibilities

  • Fits in tight spaces and pipework

  • Lightweight

  • Mounts in any direction, including upside down


High flow - Low pressure drop

  • The flow path through the valve is largely uninhibited by the rotor

  • This offers extremely low pressure drop for given flow rate and valve size

Flexible ports

Design your pipework, then pick your valve mode


  • Flexible ports bring freedom of pipework design

  • The valve meets the pipework design, not vise versa

  • Allows for mirrored installations

  • Allows flow in or out of any port as standard

  • High flow and low flow versions


Reconfigurable on site

Easy installation and comissioning

  • Fully factory tested and set up on delivery

  • In the event of late stage pipework layout change, the G-valve is reconfigurable on site by customer

  • Dip switches for change of direction & control input are available. No laptop needed

Good Vibrations

Designed for ardous On-Engine use


  • Custom designed actuator and valve assembly to endure the harsh vibrations caused by large diesel engines, ships and alike

  • Used in integrated in-engine applications, hard bolted to engine block


Internal Leakage

Every application is different. AMOT offer three options for internal leakage

  • ANSI Class I

    • Better than 2% internal leakage for applications running at constant mixing or diverting

  • ANSI Class II

    • 0,5% or better internal leakage for applicationwith elevated efficiency requirements

  • ANSI Class IV

    • For ultimate efficiency, the LLGG 0,01% internal leakage version is the choice

System Integration

AMOT offers different levels of system integration

  1. Stand alone system integration including the Valve, the sensors, PID logics, and optional external communication in one package          

  2. Fully integrated valve only, controlled by others, reading a variety of input signals such as 4-20mA, 0-10V and feedback

Amot part numbers: 

Temperature probe Pt100: part no. 8060

PID Controller for cabinet mount: 8071D

PID Controller for wall mount: 8072D


G-Valve Facts

Size: 2-20” DN50-500
Flow: 7-3000 m3/h

Kv: 80-6000
Housing Material: Cast Iron, Bronze, Steel, Ductile Iron, 

Stainless Steel

Leakage class:
ANSI Class I: <2%
ANSI Class II: <0,5%
ANSI Class IV: <0,01%
Flanges: Most DIN, ANSI and JIS standards

Flow direction: Any
Common port: Any
Mounting orientation: Any
Actuator options: Electric 110/220 VAC, Electric 24VDC,


Supply: 110/220VAC, or 24VDC
Control signal: 0-10V, 0-20mA, 4-20mA
Vibration: Lloyds Class 2, On engine levels
Temp: -20 to +175oC

Amot GG-valve model code example: (See also table in data sheet p. 17)

06GGSDBS32EABCAAA: 6'' GG-valve, standard flow (S), duktile iron (D), flange PN10 (B), standard rotor (S), rotor position cold (3) rotor position hot (2), actuator 100-120 VAC 50/60Hz (EA), actuator input 4-20mA (B), actuator position output 4-20mA (CA), no  customer customizations (AA)

08GGSDCS32EABCAAA: same as above, but 8'' valve with PN16-flange.

Model G 3-way temperature control valve acts as an integral part of your electrical, pneumatic or electro-pneumatic system. The electric G-valve system is easy to install, while the pneumatic system is ideal when there is a lack of electricity or when a failsafe system is required. The electro-pneumatic system combines the features and functionality of AMOT's electronic control system with the flawless advantages of a pneumatically actuated valve. The position sensor on both electrical and electro-pneumatic versions allows for direct connection to an engine management system.

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