KEH Series Electro Hydraulic Actuators
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KEH Series Electro Hydraulic Actuators

Table of Contents General Description 3 Functions4 Specifications Of The KEH/KEXH Actuators 5 Standard Actuator Scope 6 Technical Data 6 Options 6 Actuator Selection 7 Actuator basic composition (KEH) 8 Standard Version Bill Of Materials 8 Explosion Proof Version Bill Of Materials 8 Torque Values 9 Operating Time 9 Electric Data 10 Hydraulic Data 10 Dimensions 10 Standard Version 10 Explosion Proof Version 10 General Dimensions Standard KEH With Manual Override 11 General Dimensions Standard KEH Without Manual Override 12 General Dimensions Standard KEHX With Manual Override 13 General...

KEH Series General Description Quifer Actuators KEH series go a step forward to the quarter turn Automation valves market. These electro hydraulic actuators are a safety and compact solution due to their new housing design where there is no need of tubing and hydraulic connections. These actuators consist in a closed hydraulic loop driven by a motor and hydraulic pump that throught electric and hydraulic devices guide the oil to the desired position. In case of fail of the power supply the actuator will move automatically to the safe position. The KEH series is defined by a spring return...

Functions The basic function of the electro hydraulic fail safe actuators is to run the actuator electrically with a motor and hydraulic pump system to keep it in open position. In case of failure of the power supply, the actuator automatically will go to the safe position. Below detailed the 2 actions of the actuator: Power Supply Action • Actuator is energized with electric supply and starts the motor that makes run the hydraulic pump. • The oil is pumped to the actuator. • When actuator arrives to the operation position, the motor stops and the actuator keeps the position. Spring...

Specifications Of The KEH/KEXH Actuators Actuator Hydraulic Unit • Rack and pinion actuator series KPM is used • The hydraulic unit contains all the hydraulic devices of with the electro hydraulic unit. • Actuator is specially designed to receive hydraulic oil from the electro hydraulic housing. • Available from size KPM 030 till KPM 500. the control to make the actuator work properly • Part of these devices is: Solenoid Valve, Hydraulic block, flow valves, pressure switches, etc. • This part is completely covered to ensure to protect the devices against the environment and manipulations...

Standard Actuator Scope Torques: Maximum spring torque 1800Nm Working pressure: Working temperature: Lubricated for thir normal working life Rotation of Oº +2,5º and Oº -2,5º Rotation of 90º+2,5º and 90º -2,5º ISO 9001:2015 IEC 61508:2010 (SIL3) LOM 10ATEX6092 X European Pressure Equipment Directive 97/23/C Technical Data Single acting actuators failure to fail position Compact actuator without hydraulic tubes Sutiable for Zone 1, Zone 2, Zone 21 and Zone 22 Hydraulic oil working fluid ISO viscosity grade 15-18 Control box as standard 24 VDC or 110 VAC Anodyzed aluminum actuator body...

Actuator Selection Electro Hydraulic Actuator Selection KE Basic composition Harzardous Area Actuator for safe area Explosion proof Actuator Electric Power Supply VAC Motor power supply VDC Motor power supply Local control voltage Safety Pressure Switch Without safety pressure switch With safety pressure switch Pressure Switch Without pressure switch With safety pressure switch Electric Drive Basic electric drive Electric drive by relay with more fuctions Electric drive with PCL for 4-20mA signal Local Control Selection Without local control Local control with selector OPEN- CLOSE- REMOTE...

Actuator basic composition (KEH) • Pneumatic actuator • Motor and hydraulic pump • Solenoid Valve hydraulic block and gauge • Electro hydraulic unit with oil tank, wiring and cable glands • Safety Valve • Relief valve • Limit switch box Standard Version Bill Of Materials 4 Quifer standard limit switch Hydraulic circuit Quifer standard actuator Electric engine Explosion Proof Version Bill Of Materials 4 Quifer standard actuator Explosion proof limit switch Hydraulic circuit Tank oil intake

Torque Values Actuator Size Spring Return Torque (Nm) Torque values are in Nm Is recommended 25% of safety factor to size the actuator Operating Time Actuator Size * Fast opertor option available under request

Electric Data Motor Power Supply (KW) Local Control Selenoid Valve Pressure Switch Standard features | For other options contact us Hydraulic Data Pump Type Gear pump Pump Pressure Loop Pressure Oil Type Temp. Range ISO viscosity, grade 15-18 From -20 ºC to +85 ºC Standard features | For other options contact us Dimensions Explosion Proof Version Standard Version

General Dimensions Standard KEH With Manual Override All dimensions are in mm | All dimensions are without brackets | Drawing is not scaled

General Dimensions Standard KEH Without Manual Override All dimensions are in mm | All dimensions are without brackets | Drawing is not scaled

General Dimensions Standard KEHX With Manual Override All dimensions are in mm | All dimensions are without brackets | Drawing is not scaled

General Dimensions Standard KEHX Without Manual Override All dimensions are in mm | All dimensions are without brackets | Drawing is not scaled

Quifer Actuators, SL. is Spanish producer of pneumatic and hydraulic actuators since 1975. Quifer Actuators has a big experience manufacturing, rack and pinion aluminum pneumatic actuators, rotary ductile Iron pneumatic actuators, scotch yoke pneumatic actuators, scotch yoke hydraulic actuators, electro-hydraulics actuators, manual gearboxes, declutch-able gearboxes limit switches, couplings and accessories for any a quarter turn valves as plug valves, ball vales or butterfly valves. Quifer Actuators has a design technician department with extensive experience and has over 30 years creating...