Barrow G1/4" Manual Pressure Release Valve Fitting - Silver/Silver (TPQ-V2-Silver)

The Barrow TPQ-V2 is a manual exhaust valve: a G1/4" plug that you open by hand to vent the loop. Screw it into a port at the highest point of the loop, usually on the reservoir, and open it to let trapped air and pressure out while you fill and bleed the loop. The body is brass in shiny silver with a silver aluminum cap in a fine CD pattern.

Properties

Type

Manual exhaust (air release) valve

Thread

G1/4" male

Size

20 mm diameter, 10.5 mm high without the thread

Material

Brass body, aluminum alloy cap

Color

Body shiny silver, cap silver

Pieces in the pack

1

Let the air out

When you fill a loop, air collects at the highest point, and warm coolant builds a little pressure inside a closed loop. Barrow makes this valve for balancing the air pressure inside and outside the loop: opening it lets that air and pressure escape without taking the whole plug out, which makes filling and bleeding easier and helps keep air away from the pump.

Fits where a plug fits

The valve has a G1/4" male thread like a normal stop plug, so it goes into any free G1/4" port on a reservoir, a block or a distro plate.

Knurled body, CD-pattern cap

The brass body has a diamond knurl for a sure grip by hand. The aluminum cap has a fine circular CD pattern with the Barrow logo, and a small hex socket sits in its center.

Technical data

Notes

• Barrow makes the body in black, white and shiny silver, with caps in several colors. This listing is the shiny silver body with a silver cap.
• Close the valve again once the air is out; the loop is not sealed while it is open.
• Barrow notes that it may update the look or construction of the part without notice; the part you receive is the current version.

In the box

• 1x Barrow G1/4" Manual Pressure Release Valve Fitting - Silver/Silver