Gas Train Components; Description Of Double Gas Valve Vgd - elco EKEVO N6.2400 GL-E Original Operating Instructions

Gas train components

Description of double gas valve VGD with SKP servo motors
Gas double valve VGD with
actuators SKP
The combined servomotor and valve
perform the following functions:
• safety shut-off valve Class A Group 2
in accordance with EN 161 (SKP15...)
• safety shut-off valve Class A Group 2
in accordance with EN 161 with gas
pressure regulator (SKP25...,
SKP55..., SKP75...)
The electrohydraulically operated
servomotors with valve are designed for
gas types I to III and air, and are
intended mainly for use in gas-fired
furnaces. They are slow-opening and
fast-closing. The actuator can be
combined as desired with any of the
valves and nominal widths specified
above. The servomotor can be supplied
with a limit switch (closed position
signalling). Valve dimension information
is provided on the "Throughput diagram"
in the relevant valve datasheet.
Technical specifications
VGD double gas valves with SKP
actuators:
Type of gas:
Gasses in accordance with DVGW
worksheet G 260/1, gas families 1, 2, 3
and biogas (H
max.), H
2
Electrical data:
220 V -15%...240 V +10%,
100 V -15%...110 V +10%,
50...60 Hz
VGD 20
Protection level: IP 54
Media temperature:-15°C to +60°C
Ambient temp.: -10°C to +60°C
Installation position:
Magnet vertically upright or on its side,
magnet horizontal
Max. operating pressure:
VGD20: 500 mbar
VGD40: 700 mbar (DN 40 and DN 50 up
to 1000 mbar)
VGD 40
The SKP25... operates as a constant-
pressure regulator with setpoint spring.
It is mainly intended for use with forced
draught burners
- with mechanical compound;
- with electronic compound.
The SKP75... operates as a constant-
ratio pressure regulator and regulates
gas pressure in proportion to the
pressure of the combustion air. This
keeps the gas/air ratio constant across
the entire load range. It is intended
mainly for use with modulating forced
draught gas burners.
System accessories available for the
double gas valve include the VPS 504
leak testing system and the GW...A5
pressure switch.
03/2016 - Art. Nr. 4200 1044 8002A
S content 0.1 vol.%
2
SKP 15
SKP 25
SKP 75
19