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Kartell Nero Square Knobs Matt Black Concealed Shower Valve

Square matt-black knobs create a disciplined concealed control point for one shower outlet.

Single-outlet operation: Runs one separately selected shower head or handset.

Two square controls: Separate on-off flow from thermostatic temperature adjustment.

80–113mm concealed depth: Requires adequate wall space for the hidden valve.

Valve supplied alone: Head, arm, hose and outlet elbow are not included.

Availability: 70 in stock

Original price was: £227.00.
Current price is: £121.95.Save £105.05 off RRP

Description

Specifications for the Kartell Nero Square Handles Matt Black Concealed Shower Valve

Product Type Concealed thermostatic shower valve
Brand Kartell
Collection Nero Square
Style Modern
Finish Matt black
Material Brass
Orientation Vertical
Valve Position Concealed
Number of Outlets 1
Number of Controls 2
Top Control On/off flow control
Bottom Control Thermostatic temperature control
Flow Control Mechanism Quarter-turn ceramic disc headwork
Temperature Control Mechanism Thermostatic cartridge
Faceplate Width 215mm
Faceplate Height 120mm
Faceplate Thickness 2mm
Control Size 42 x 42mm
Control Centres 80mm
Control Projection 30mm
Concealed Installation Depth 80–113mm
Valve Body Width 176mm
Inlet Connection G3/4
Outlet Connection G1/2
Minimum Operating Pressure 0.2 bar
Maximum Operating Pressure 5 bar
Supply Requirement Balanced hot and cold pressures
Suitable Water Systems Combi boilers, unvented mains pressure, gravity-fed systems and shower pumps
Flow Rate at 0.2 Bar 5.7 litres per minute
Flow Rate at 0.5 Bar 9.6 litres per minute
Flow Rate at 1 Bar 13.6 litres per minute
Flow Rate at 2 Bar 19.8 litres per minute
Flow Rate at 3 Bar 24.5 litres per minute
Flow Rate at 5 Bar 28.5 litres per minute
WRAS Approved Yes
WRAS Approval Number 2207085
Standard BS EN 1111
Published Product Weight 2.3kg
Datasheet Net Weight 2.41kg
Gross Weight 2.78kg
Packaging Size 263 x 165 x 160mm
Shower Head or Handset Included No
Shower Arm, Hose or Outlet Elbow Included No
Guarantee 5 years
Moving Parts Guarantee 1 year
Tails the bathroom retail mascot

Tails’ Take: Sharp Black Controls with the Plumbing Hidden Away

The Kartell Nero Square Knobs matt black concealed shower valve gives the shower wall a disciplined architectural focal point, pairing a tall rectangular faceplate with two substantial square controls while keeping the main valve body behind the finished surface. The upper knob operates the water flow and the lower knob adjusts temperature around clear hot, cold and 38° markings, making this one-outlet valve a strong match for a focused overhead or handheld arrangement with the chosen shower fittings selected separately.

Will This Nero Square Valve Suit Your Shower Plan?

Check the intended outlet, concealed wall depth, supply balance and operating pressure before installation.


Who Should Buy

Showers Wanting Independent Flow and Temperature Controls

The two-knob layout separates on/off operation from thermostatic temperature adjustment for a clear daily routine.

Bathrooms Coordinating Square Matt Black Fittings

The rectangular faceplate and square knobs can connect visually with angular black shower heads, outlets and accessories.

Homes Using a Range of Common Water Systems

The valve is suitable for combi boilers, unvented systems, gravity-fed supplies and shower pumps when the hot and cold pressures are balanced.

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Who Shouldn’t Buy

Plans Requiring Two Independently Selected Outlets

This is a one-outlet valve and does not include a diverter for switching between an overhead head and separate handset.

Walls Unable to Provide the Concealed Depth

The installation must accommodate an 80–113mm concealed depth behind the finished wall surface.

Supplies with Unbalanced or Excessive Pressure

Hot and cold pressures must be balanced and remain within the confirmed 0.2–5 bar operating range.

FAQs About the Kartell Nero Square Knobs Matt Black Concealed Shower Valve

Control, installation and performance guidance for the SHO047NS valve

Which function does each square knob control?

The upper knob turns the shower flow on and off through quarter-turn ceramic disc headwork. The lower knob independently controls the water temperature through a thermostatic cartridge, with hot, cold and 38° references marked on the faceplate. This separation means the preferred temperature control does not also act as the main flow switch, giving each knob one clearly defined role.

How much space is needed for the concealed valve and faceplate?

The visible faceplate measures 215mm wide by 120mm high, with the two 42mm square controls positioned at 80mm centres. Behind the wall, allow for a concealed installation depth of 80–113mm and a valve body width of 176mm. The controls project by 30mm beyond the faceplate, so nearby enclosure frames or shelves should not obstruct their operation.

What flow can the SHO047NS deliver at different pressures?

The recorded flow rises from 5.7 litres per minute at 0.2 bar to 13.6 litres per minute at 1 bar, 24.5 litres per minute at 3 bar and 28.5 litres per minute at 5 bar. Actual performance depends on the installed system, and the hot and cold supplies must be balanced. The selected shower head or handset should also be suitable for the available pressure and flow.

Additional information

EAN Barcode 5055681437848
Brand Kartell Bathrooms

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