The Poppet Valve is the part which controls air flow through the Fusion Engine™. The valve is available in different levels of restriction to limit or maximum air flow down the barrel which promotes either higher air efficiency or higher velocity, depending on which valve you go with.
- The Red Low Flow Poppet valve is the Mid-level restriction valve for a good blend of power and efficiency.
How does it work?
The standard Black poppet
valve for the Fusion Engine™ allows the maximum amount of air flow
through the system and it is the nozzle which restricts the flow into
the barrel which varies the velocity. This gives you a wide range of
velocity adjustment by simply changing out the nozzle to shift the
velocity range of your rifle up or down in large increments.
The low flow poppet valve does what the name suggests and restricts flow
at the valve itself so it allows less air through. Therefore the main
restriction is back further in the system instead of right up front at
the nozzle. Normally, with the nozzle being the restricting point, there
is air backed up in the section between the poppet and the nozzle which
will only be able to vent out as fast as the nozzle's restriction
allows. If a more restrictive nozzle is needed to keep the muzzle
velocity within field limits, there will still be air pressurized in
this section after the poppet valve has closed and the BB has left the
barrel so it is wasted. Since it is the poppet valve which turns the air
flow on and off, having it being the restricting point instead of the
nozzle conserves air since less air is allowed through at once.
The low flow poppet also helps improve how smoothly air flows down the
barrel since it has time to expand slightly in the system after it goes
through the valve so there is less turbulence behind the round which can
improve accuracy slightly. With the poppet being the main restrictive
point, the nozzle doesn't have as much of an affect on restricting flow
although it can still restrict if the flow reaching the nozzle is still
greater than the nozzle can let through at once. This is why you
typically use a higher flow nozzle in conjunction with the low flow
poppet such as a Black, Silver or Red nozzle. With the Red Low Flow
poppet installed along with one of these higher flow nozzles, a Fusion
Engine can achieve up to 50% greater air efficiency than a stock engine
producing the same muzzle energy.
With the Red Low Flow poppet
valve the rifle will be optimized for air efficiency when operating at
standard field limits. While it may not be able to hit as high of a
velocity in the maximum pressure range as it would have with the
standard poppet valve, it will still be able to achieve rifleman and DMR
velocities and with greater air efficiency.
Here are some
examples of how a Red Low Flow affects muzzle velocity. Testing was done
at 80psi and 120psi using a VFC M4 with a stock hop-up and 6.05x380mm
barrel.
Polarstar Fusion Engine Low-Flow Poppet Valve (Red)
- Brand: PolarStar
- Product Code: 3025
- Availability: 3
-
$60.00
The Poppet Valve is the part which controls air flow through the Fusion Engine™. The valve is available in different levels of restriction to limit or maximum air flow down the barrel which promotes either higher air efficiency or higher velocity, depending on which valve you go with.
- The Red Low Flow Poppet valve is the Mid-level restriction valve for a good blend of power and efficiency.
How does it work?
The standard Black poppet
valve for the Fusion Engine™ allows the maximum amount of air flow
through the system and it is the nozzle which restricts the flow into
the barrel which varies the velocity. This gives you a wide range of
velocity adjustment by simply changing out the nozzle to shift the
velocity range of your rifle up or down in large increments.
The low flow poppet valve does what the name suggests and restricts flow
at the valve itself so it allows less air through. Therefore the main
restriction is back further in the system instead of right up front at
the nozzle. Normally, with the nozzle being the restricting point, there
is air backed up in the section between the poppet and the nozzle which
will only be able to vent out as fast as the nozzle's restriction
allows. If a more restrictive nozzle is needed to keep the muzzle
velocity within field limits, there will still be air pressurized in
this section after the poppet valve has closed and the BB has left the
barrel so it is wasted. Since it is the poppet valve which turns the air
flow on and off, having it being the restricting point instead of the
nozzle conserves air since less air is allowed through at once.
The low flow poppet also helps improve how smoothly air flows down the
barrel since it has time to expand slightly in the system after it goes
through the valve so there is less turbulence behind the round which can
improve accuracy slightly. With the poppet being the main restrictive
point, the nozzle doesn't have as much of an affect on restricting flow
although it can still restrict if the flow reaching the nozzle is still
greater than the nozzle can let through at once. This is why you
typically use a higher flow nozzle in conjunction with the low flow
poppet such as a Black, Silver or Red nozzle. With the Red Low Flow
poppet installed along with one of these higher flow nozzles, a Fusion
Engine can achieve up to 50% greater air efficiency than a stock engine
producing the same muzzle energy.
With the Red Low Flow poppet
valve the rifle will be optimized for air efficiency when operating at
standard field limits. While it may not be able to hit as high of a
velocity in the maximum pressure range as it would have with the
standard poppet valve, it will still be able to achieve rifleman and DMR
velocities and with greater air efficiency.
Here are some
examples of how a Red Low Flow affects muzzle velocity. Testing was done
at 80psi and 120psi using a VFC M4 with a stock hop-up and 6.05x380mm
barrel.
Tags: Polarstar, Fusion Engine Parts, HPA Parts, Poppet Valves, Low-Flow Valves, Internals polarstar, fusion, engine, low-flow, poppet, valve, (red)