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Silver cylindrical G1/4 inch manual pressure release valve fitting

Barrow Mods

Barrow Mods G1/4" Manual Pressure Release Valve Fitting Silver/Silver diy cooling

SKU CH-7MBJ-EC44S

A G1/4" manual pressure-release valve that vents excess air from a reservoir or high point to simplify priming and prevent pump air locks

  • Product typeFittings
  • Releases trapped air and pressure from the loop via manual G1/4" valve
  • Simplifies system priming by venting excess air through the top port
  • Helps eliminate pump air locks with a dedicated pressure equaliser fitting
  • Threaded G1/4" design fits standard reservoir tops and high points in custom loops
  • Silver finish matches silver-themed DIY cooling builds

Barrow G1/4" Pressure Release Valve

This silver-coloured fitting installs in a G1/4" threaded port on a reservoir or other high point in a custom liquid-cooling loop. It provides a manual control to vent trapped air and excess pressure, making initial priming easier and helping to prevent pump air locks during operation. The all-metal construction suits standard hard-line or soft-tube builds that use G1/4" threads throughout.

Suited to builders who need a dedicated bleed point

This valve is intended for loops that have a G1/4" port available at the highest location and where the user wants manual control over pressure release. Systems that rely solely on automatic bleed valves, or that lack a free G1/4" port at a high point, will not benefit from this component. It does not replace a fill port or a standard stop plug.

G1/4" thread compatibility

The fitting uses the industry-standard G1/4" (BSPP) thread pitch found on most water-blocks, radiators, pumps and reservoirs sold for PC liquid cooling. Verify that the intended mounting location has a matching female G1/4" port before purchase; other thread standards will not seal correctly.

How it compares

Measured against everything we stock in Heatsinks & Water Blocks, at today’s prices. Recalculated every night.

Price $9.99
Cheaper than about 70% of the 609 comparable items (median $15.99).

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Specifications

Product
Product typeFittings

Questions about this item

Will the G1/4" threads on the pressure release valve need re-sealing or replacement over time?

The valve uses standard G1/4" threads compatible with common water-cooling fittings; re-sealing is only needed if the O-ring or thread sealant degrades during routine loop maintenance.

What pressure limit triggers the manual release on this valve during sustained operation?

The fitting is a manual pressure equaliser, not an automatic relief valve; it vents only when you turn the knob, so no factory-set pressure limit activates during normal use.

Does the silver-finished brass body add noticeable heat or noise when the loop runs all day?

The valve has no moving parts while closed and no electrical components, so it contributes zero noise and negligible thermal load to a continuously running custom loop.

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