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Shower valve Flow Valves and Shut off Cartridges

Find the correct shower valve replacement, flow cartridge, or shut off valve to stop your dripping shower.

The flow valve (or on/off cartridge) controls the water volume and is the most common cause of leaks. We stock a massive range of shower shut off valves, ceramic disc cartridges, and compression valves for brands like Aqualisa, Mira, and Triton.

  • βœ“ UK's Largest Stockist
  • βœ“ 5 Star Trustpilot Rated
  • βœ“ 100% Genuine Spares
  • βœ“ 1/4 Turn Ceramic Valves
  • βœ“ Compression Washers
  • βœ“ Fix Dripping Showers
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Showing 246 of 246 Products
Shower valve Flow Valves and Shut off Cartridges
Showing products 1 to 48 of 246
ABACUS ON/OFF CARTRIDGE FOR 1-WAY 2-HANDLE CVP CONCEALED SHOWER VALVE (ABSP-10-0016)ABACUS ON/OFF CARTRIDGE FOR 1-WAY 2-HANDLE CVP CONCEALED SHOWER VALVE (ABSP-10-0016)
ABACUS ON/OFF CARTRIDGE FOR 1-WAY 2-HANDLE CVP CONCEALED SHOWER VALVE (ABSP-10-0016)
Abacus On/Off Cartridge For Concealed Shower Valve ABSP-10-0018Abacus On/Off Cartridge For Concealed Shower Valve ABSP-10-0018
Abacus On/Off Cartridge For Concealed Shower Valve ABSP-10-0018
Abacus On/Off Cartridge For Concealed Shower Valve ABSP-10-0018 Short VersionAbacus On/Off Cartridge For Concealed Shower Valve ABSP-10-0018 Short Version
Abacus On/Off Cartridge For Concealed Shower Valve ABSP-10-0018 Short Version
Alpi Clockwise Close Ceramic Cartridge VT002Alpi Clockwise Close Ceramic Cartridge VT002
Alpi Clockwise Close Ceramic Cartridge VT002
Alpi on off Cartridge Used With Shower Clockwise Close mixer ALPI002Alpi on off Cartridge Used With Shower Clockwise Close mixer ALPI002
Alpi on off Cartridge Used With Shower Clockwise Close mixer ALPI002
Alpi Replacement Shower Cartridge VT 015DXΒ Alpi Replacement Shower Cartridge VT 015DXΒ 
Alpi Replacement Shower Cartridge VT 015DX 
Aqata Flow Clockwise Close  Cartridge SVR21WAqata Flow Clockwise Close  Cartridge SVR21W
Aqata Flow Clockwise Close Cartridge SVR21W
Aqualisa Midas ON/OFF Flow Cartridge - High Pressure EB910214Aqualisa Midas ON/OFF Flow Cartridge - High Pressure EB910214
Aqualisa Midas ON/OFF Flow Cartridge - High Pressure EB910214
Bathroom Replublic Flame Shower Valve Replacement Flow Valve Clockwise Close INFINITYFLOWCWBathroom Replublic Flame Shower Valve Replacement Flow Valve Clockwise Close INFINITYFLOWCW
Bathroom Replublic Flame Shower Valve Replacement Flow Valve Clockwise Close INFINITYFLOWCW
bathroomspareparts Non Concussive Exposed Control Valve 692R041
Ebaths Non Concussive Exposed Control Valve 692R041
Bathstore Bensham Shower Valve On/Off Cartridge SPACW0005Bathstore Bensham Shower Valve On/Off Cartridge SPACW0005
Bathstore Bensham Shower Valve On/Off Cartridge SPACW0005
Bathstore Blade Shower Valve On/Off Cartridge SPACW0005Bathstore Blade Shower Valve On/Off Cartridge SPACW0005
Bathstore Blade Shower Valve On/Off Cartridge SPACW0005
Bathstore Metro Post 2007 Shut Off Valve X2A071NBathstore Metro Post 2007 Shut Off Valve X2A071N
Bathstore Metro Post 2007 Shut Off Valve X2A071N
Bathstore Metro Pre 2007 On/Off Clockwise Close Cartridge Flow 3/4 Valve AQ8083Bathstore Metro Pre 2007 On/Off Clockwise Close Cartridge Flow 3/4 Valve AQ8083
Bathstore Metro Pre 2007 On/Off Clockwise Close Cartridge Flow 3/4 Valve AQ8083
Bathstore Quatra Shower Clockwise Close Valve Flow Cartridge SPACW0017Bathstore Quatra Shower Clockwise Close Valve Flow Cartridge SPACW0017
Bathstore Quatra Shower Clockwise Close Valve Flow Cartridge SPACW0017
Bathstore Swing Vertical  Shower Valve On/Off Cartridge SPACW0005Bathstore Swing Vertical  Shower Valve On/Off Cartridge SPACW0005
Bathstore Swing Vertical Shower Valve On/Off Cartridge SPACW0005
BathstoreΒ Metro Flow Control On/Off Valve CG1210FA1BathstoreΒ Metro Flow Control On/Off Valve CG1210FA1
Bathstore Metro Flow Control On/Off Valve CG1210FA1
BathstoreΒ Metro Flow Control On/Off Valve CG1210FA2BathstoreΒ Metro Flow Control On/Off Valve CG1210FA2
Bathstore Metro Flow Control On/Off Valve CG1210FA2
Better Bathrooms Eco Style  Shower On/Off  Valve ABSP-10-0018 Short VersionBetter Bathrooms Eco Style  Shower On/Off  Valve ABSP-10-0018 Short Version
Better Bathrooms Eco Style Shower On/Off Valve ABSP-10-0018 Short Version
Bristan Flow Control Cartridge for Artisan Thermostatic BSM 000190000-032Bristan Flow Control Cartridge for Artisan Thermostatic BSM 000190000-032
Bristan Flow Control Cartridge for Artisan Thermostatic BSM 000190000-032
Bristan Prism Flow Control Clockwise Close Cartridge 00622130Bristan Prism Flow Control Clockwise Close Cartridge 00622130
Bristan Prism Flow Control Clockwise Close Cartridge 00622130
Bristan Replacement Flow Clockwise Close Valve For Artisan 2011 Single Flow 00650436Bristan Replacement Flow Clockwise Close Valve For Artisan 2011 Single Flow 00650436
Bristan Replacement Flow Clockwise Close Valve For Artisan 2011 Single Flow 00650436
Bristan Replacement Valve For Fairfax Shower 04046OF
DISCONTINUED
Bristan Valve Cd 3/4 Part Number: Clockwise Close VLV 04070-8-20ABristan Valve Cd 3/4 Part Number: Clockwise Close VLV 04070-8-20A
Bristan Valve Cd 3/4 Part Number: Clockwise Close VLV 04070-8-20A
BSP Flow Cartridge GEAR CARTRIDGEBSP Flow Cartridge GEAR CARTRIDGE
BSP Flow Cartridge GEAR CARTRIDGE
BSP Flow Cartridge GEAR SETBSP Flow Cartridge GEAR SET
BSP Flow Cartridge GEAR SET
Burlington Bottom On/Off Clockwise Close Cartridge BUR.SP36Burlington Bottom On/Off Clockwise Close Cartridge BUR.SP36
Burlington Bottom On/Off Clockwise Close Cartridge BUR.SP36
Burlington Clockwise Close Cartridge For Eden EF1S Thermostatic Shower Valve SPABU0021Burlington Clockwise Close Cartridge For Eden EF1S Thermostatic Shower Valve SPABU0021
Burlington Clockwise Close Cartridge For Eden EF1S Thermostatic Shower Valve SPABU0021
Burlington F3 Top flow control cartridge for recessed shower valve V34 V36: SPABU0012Burlington F3 Top flow control cartridge for recessed shower valve V34 V36: SPABU0012
Burlington F3 Top flow control cartridge for recessed shower valve V34 V36: SPABU0012
Burlington F8  Anti-Clockwise Close cartridge for Stour BF3S thermostatic shower valve SPABU0023Burlington F8  Anti-Clockwise Close cartridge for Stour BF3S thermostatic shower valve SPABU0023
Burlington F8  Anti-Clockwise Close cartridge for Stour BF3S thermostatic shower valve SPABU0023
Burlington F8 flow control Clockwise Close cartridge for Stour BF3S thermostatic shower valve SP582Burlington F8 flow control Clockwise Close cartridge for Stour BF3S thermostatic shower valve SP582
Burlington F8 flow control Clockwise Close cartridge for Stour BF3S thermostatic shower valve SP582
Burlington Flow Anti-Clockwise Close Cartridge For Old Style Clyde Valve SP34Burlington Flow Anti-Clockwise Close Cartridge For Old Style Clyde Valve SP34
Burlington Flow Anti-Clockwise Close Cartridge For Old Style Clyde Valve SP34
Burlington Flow Clockwise Close Cartridge SP33Burlington Flow Clockwise Close Cartridge SP33
Burlington Flow Clockwise Close Cartridge SP33
Burlington flow control Anti-Clockwise Close cartridge for V25 shower valve SPABU0017Burlington flow control Anti-Clockwise Close cartridge for V25 shower valve SPABU0017
Burlington flow control Anti-Clockwise Close cartridge for V25 shower valve SPABU0017
Burlington Flow Control Cartridge For Eden EF1S  Shower Valve SP580Burlington Flow Control Cartridge For Eden EF1S  Shower Valve SP580
Burlington Flow Control Cartridge For Eden EF1S Shower Valve SP580
Burlington Flow Control Cartridge TF2S, TF3S Shower Valves SP584Burlington Flow Control Cartridge TF2S, TF3S Shower Valves SP584
Burlington Flow Control Cartridge TF2S, TF3S Shower Valves SP584
Burlington Hent F3 Bottom flow control cartridge for recessed shower valve V36: SPABU0014Burlington Hent F3 Bottom flow control cartridge for recessed shower valve V36: SPABU0014
Burlington Hent F3 Bottom flow control cartridge for recessed shower valve V36: SPABU0014
Burlington Hent F6 Bottom flow control Clockwise Close cartridge for V25 shower valve SP36Burlington Hent F6 Bottom flow control Clockwise Close cartridge for V25 shower valve SP36
Burlington Hent F6 Bottom flow control Clockwise Close cartridge for V25 shower valve SP36
Burlington New Top Flow Control Cartridge For Recessed Shower Valve V34 V36: SP313Burlington New Top Flow Control Cartridge For Recessed Shower Valve V34 V36: SP313
Burlington New Top Flow Control Cartridge For Recessed Shower Valve V34 V36: SP313
Burlington Old Top flow control cartridge for recessed shower valve V34 V36: X24071NBurlington Old Top flow control cartridge for recessed shower valve V34 V36: X24071N
Burlington Old Top flow control cartridge for recessed shower valve V34 V36: X24071N
Burlington Stour Hent F7 Flow Control Anti-Clockwise Close Cartridge SP581Burlington Stour Hent F7 Flow Control Anti-Clockwise Close Cartridge SP581
Burlington Stour Hent F7 Flow Control Anti-Clockwise Close Cartridge SP581
Burlington Stour Hent F8 Flow Control Clockwise Close Cartridge SP582Burlington Stour Hent F8 Flow Control Clockwise Close Cartridge SP582
Burlington Stour Hent F8 Flow Control Clockwise Close Cartridge SP582
Burlington Top Flow Control Cartridge for Stour Thermostatic BF1S, BF2S, BF3S  Valve SP581Burlington Top Flow Control Cartridge for Stour Thermostatic BF1S, BF2S, BF3S  Valve SP581
Burlington Top Flow Control Cartridge for Stour Thermostatic BF1S, BF2S, BF3S Shower Valve SP581
Burlington Top Flow Control Cartridge For Stour Thermostatic BF1S, BF2S, BF3S Shower Valve SPABU0022Burlington Top Flow Control Cartridge For Stour Thermostatic BF1S, BF2S, BF3S Shower Valve SPABU0022
Burlington Top Flow Control Cartridge For Stour Thermostatic BF1S, BF2S, BF3S Shower Valve SPABU0022
Burlington Top On/Off Anti-Clockwise Close Cartridge BUR.SP37Burlington Top On/Off Anti-Clockwise Close Cartridge BUR.SP37
Burlington Top On/Off Anti-Clockwise Close Cartridge BUR.SP37
Burlington Trent Bottom Flow Clockwise Close Valve  SP33Burlington Trent Bottom Flow Clockwise Close Valve  SP33
Burlington Trent Bottom Flow Clockwise Close Valve  SP33
Burlington Trent F4 Flow Control Cartridge SP584Burlington Trent F4 Flow Control Cartridge SP584
Burlington Trent F4 Flow Control Cartridge SP584
Cassellie CVT001 On/Off Anti Clockwise Close Shower Cartridge COMP007Cassellie CVT001 On/Off Anti Clockwise Close Shower Cartridge COMP007
Cassellie CVT001 On/Off Anti Clockwise Close Shower Cartridge COMP007

Identify Your Shower Flow Cartridge

To find the correct shower valve replacement, you must remove the handle and inspect the cartridge inside. Visual identification is key, as many brands use similar brass valves.

πŸ’‘
Pro Tip: Count the Splines
The "splines" are the teeth on the top stem where the handle grips. You MUST count them (e.g., 20 teeth, 24 teeth). If you get this wrong, your handle will not fit the new flow cartridge.

Shower Valve Sizing Guide

Use this table to check your dimensions. The most important measures are the overall length and the spline count.

Valve Type Spline Count (Common) Thread Size
Ceramic Disc (1/4 Turn) 18, 20, 24, or 32 Splines 1/2" or 3/4" BSP
Compression (Wind Down) Usually Square or 20 Splines Standard 1/2" BSP
Push Button (Diverter) N/A (Push fit) Various

Types of Shut Off Valves

Ceramic Disc (Quarter Turn)

The most common modern shower on off valve. It opens fully with just a 90-degree turn of the handle. If it drips, the ceramic discs inside are worn.

Compression (Washer)

Found in older showers. You have to wind the handle multiple times to open it. These use rubber washers which can perish over time.

Diverter Cartridges

Complex valves that switch water between outlets (e.g., overhead head vs. handset). These are longer and more specific to the brand.

Shower Valve Replacement FAQs

Why is my shower dripping?
A dripping shower is almost always caused by the flow cartridge (the on/off valve) letting water pass, not the thermostat. Replacing the flow cartridge usually solves the drip instantly.
Are universal shower flow cartridges available?
Rarely. While many look similar, the spline count and length vary. It is safer to match the visual design and measurements exactly rather than assuming a "universal" fit.
What is the difference between On/Off and Thermostatic?
The thermostatic cartridge controls the temperature (Hot/Cold). The flow valve controls the volume and turns the water On/Off. If you have a drip, you need the flow valve. If the water is cold, you need the thermostat.
How do I remove the old shower valve?
First, isolate the water supply. Remove the handle (look for a grub screw). Use a box spanner or adjustable wrench to unscrew the old valve counter-clockwise.