Brine Tank - 200L (Round) with Internals 3/8in Brine with 500a Aircheck BT200

The 10599000048-C0008 is a complete 200L round brine tank (tank type BT200) supplied with its internal float valve assembly, 3/8" brine line connection and a 500A aircheck safety device. The aircheck valve shuts off the brine draw once the salt solution drops to a safe minimum level, protecting the control valve and resin bed from drawing in air. This larger-capacity round tank suits softeners with higher salt usage or longer intervals between top-ups, and this complete unit is stocked by WrekinWater ready to plumb straight in.

Technical specifications

Symptoms that mean you need this part

• The existing 200L tank is cracked, split or leaking at the base or seams
• The tank is brittle, discoloured or crumbling after years in service
• The aircheck valve has failed, allowing air to be drawn into the system and causing spluttering taps
• You're replacing a failed BT200 tank and need a like-for-like round 200L unit with matching internals

Why it fails / why it matters

A brine tank of this size holds a larger salt charge, useful where softener regenerations draw more brine or where top-up intervals need to be longer. The 500A aircheck is a safety device that closes off the brine line once the tank runs low, preventing the control valve from sucking air through the system, which can otherwise cause spluttering at taps and disrupt the softener's plumbing. Over time the polyethylene tank itself can become brittle from constant exposure to salt and moisture, cracking or splitting at stress points, and once the tank or its internals fail the softener can lose its brine supply or start drawing air, so the whole unit needs replacing.

Why buy this from WrekinWater

WrekinWater has supplied water softener parts to installers and DIY customers for over 15 years from its Bettisfield, Shropshire base, and stocks the full range of Pentair Fleck, Autotrol, Clack and Kinetico components, including complete brine tanks with the correct safety internals already fitted. Orders are processed quickly and the business is rated Excellent on Trustpilot, which matters when your softener is off supply until a replacement tank arrives.

How to fit it

1. Isolate the softener at the bypass valve, run a manual regeneration to draw down brine, then disconnect the 3/8" brine line from the old tank
2. Check the float valve and 500A aircheck internals in the new tank are correctly seated before moving it into position
3. Position the new 200L round BT200 tank, confirming it matches the space and connection layout of the tank being replaced
4. Reconnect the 3/8" brine line to the float valve assembly and check the joint is watertight
5. Add the correct salt charge and top up with water to the manufacturer's recommended level
6. Run a manual regeneration and confirm brine draw and aircheck operation before returning the softener to service