910010CC Thermostatic Mixing Valve

• TMV3 Specification D 08 compliance for healthcare premises – TMV3 is the UK’s highest-tier thermostatic mixing valve specification, required by the Health Technical Memorandum HTM 04-01 for hot water systems in NHS and healthcare facilities. Compliance with Specification D 08 confirms the 910010CC and 910011CC meet the performance requirements for temperature control, cold water fail-safe shutoff, and endurance specified for healthcare environments — where vulnerable patients are at greatest risk from scald injury
• ISO 9001:2015 certified manufacturing quality system – Both models are designed, manufactured, and supported under an accredited ISO 9001:2015 quality management system, providing documented process control and traceability throughout production — a requirement for specifying TMVs in regulated healthcare and institutional procurement
• Cold water fail-safe shutoff — TMV3 mandatory requirement – If the cold water supply fails during operation, the valve automatically reduces flow to a trickle within one to two seconds, preventing delivery of scalding untempered hot water to the outlet. This fail-safe behavior is verified during commissioning and must be re-tested annually to maintain TMV3 scheme approval
• Integral check valves and strainers on both inlets – Built-in check valves prevent cross-flow between the hot and cold supply circuits, and integrated strainers at both inlets protect the thermostatic cartridge from particulate contamination. No separate inline backflow prevention or filtration components are required upstream of the valve
• Factory set at 38°C with field-adjustable set point – The valve ships preset to 38°C — the TMV3 approved temperature for bidet applications and a safe baseline for commissioning. The set point can be adjusted in the field using standard tools without valve body removal, covering the full range of TMV3-approved outlet temperatures for different fixture types
• Two pipe sizes in a single product series — 15mm and 22mm – The 910010CC (15mm) and 910011CC (22mm) share the same thermostatic cartridge specification, accuracy, and TMV3 approvals, allowing both to be specified within the same hot water system for different branch sizes without requiring separate valve platform qualifications
• High and low pressure system coverage with approved application codes – Seven TMV3-approved application codes cover both high-pressure (1–5 bar) and low-pressure (0.2–1 bar) operating conditions across bidet, washbasin, shower, and bath fill applications, making the series suitable for mains-pressure and gravity-fed hot water systems in the same building without requiring different valve models
• DR brass body with anti-scale and anti-wear performance – The dezincification-resistant brass body withstands the corrosive effects of hot water and aggressive water chemistry over the valve’s service life. The thermostatic cartridge and internal components are designed for resistance to limescale accumulation and mechanical wear in normal municipal water supply conditions

• Healthcare facilities requiring HTM 04-01 compliance – NHS trusts, private hospitals, care homes, and clinical facilities in the UK are required under HTM 04-01 to install TMV3-approved thermostatic mixing valves at point-of-use outlets serving patients and residents. The 910010CC and 910011CC’s TMV3 Specification D 08 approval directly satisfies this requirement for showers, washbasins, baths, and bidets in these environments
• Shower and washbasin outlets in mains-pressure buildings – Under high-pressure approval codes HP-S and HP-W, the series delivers a controlled 41°C outlet temperature at showers and washbasins in mains-pressure plumbing systems operating between 1 and 5 bar, covering standard UK mains supply conditions
• Bath fill applications with maximum 44°C outlet – The HP-T44 approval code covers bath fill at a maximum 44°C outlet temperature, accounting for heat loss in metal bath surfaces. The British Burns Association recommends 37°C as a comfortable bathing temperature for children — the 44°C maximum is a safety ceiling, not a recommended bathing temperature
• Gravity-fed hot water systems in older residential and healthcare buildings – The low-pressure approval codes LP-BE, LP-WE, and LP-SE cover gravity-fed systems operating between 0.2 and 1 bar, making the series suitable for older UK buildings with traditional gravity hot water systems where mains-pressure TMV solutions would not operate correctly
• Retrofit TMV installations during building refurbishment – The compact 15mm and 22mm body sizes make both models suitable for retrofit installation at existing fixture supply points during building refurbishment projects, replacing non-thermostatic or non-TMV3-compliant valves to bring hot water systems into compliance with current HTM and building regulations requirements
• Bidet outlets requiring lowest safe delivery temperature – The HP-B and LP-BE approval codes set the maximum bidet outlet temperature at 38°C, the lowest approved fixture temperature in the TMV3 scheme, reflecting the greater sensitivity of the body areas served by bidet fixtures to thermal injury

• Connect the inlet marked “H” to the hot water supply and the inlet marked “C” to the cold water supply. Install stop valves, integral strainers, and union fittings at both hot and cold inlets to allow the valve to be isolated and serviced without draining the system
• Verify that operating conditions are within the specified ranges before commissioning: hot supply 55–65°C, cold supply 5–20°C, and operating pressure within the relevant high-pressure (1–5 bar) or low-pressure (0.2–1 bar) range. The valve may function outside these conditions, but TMV3 scheme approval does not apply outside the specified operating envelope
• After installation, exercise the valve’s internal mechanism at least three times by alternately isolating the hot and cold supplies in sequence. This causes the piston to travel its full stroke and confirms correct thermostatic operation. If the set temperature has drifted after this procedure, repeat the commissioning adjustment before proceeding
• Perform the cold water fail-safe shutoff test at commissioning: isolate the cold supply and confirm that flow reduces to a trickle within one to two seconds. Restore cold supply and verify the set temperature has not changed. This test is mandatory for TMV3 commissioning and must be repeated annually
• To adjust the outlet temperature: remove the plastic cap using a flat-tip screwdriver, loosen (do not remove) the locking nut, invert the plastic cap and align its triangular recess to the adjuster screw, then turn the adjuster screw — clockwise to decrease temperature, counterclockwise to increase. Tighten the locking nut and refit the plastic cap after adjustment. Confirm the outlet temperature with a calibrated digital handheld thermometer under normal operating flow conditions
• The TMV3 outlet temperature must never exceed 46°C at any terminal fitting, including the 44°C bath fill maximum under HP-T44. This is not a recommended bathing temperature — it is the maximum safety ceiling. The British Burns Association recommends 37°C as a comfortable and safe bathing temperature for children
• For periodic servicing: isolate hot and cold supplies, remove check valves and strainers from the adaptors, inspect for damage, and rinse in clean potable water. If the main valve body requires internal cleaning, use only WRAS-approved silicone-based waterproof grease to lubricate the o-ring and piston external surface on reassembly. Reassemble strictly according to the assembly drawing, paying particular attention to strainer and check valve orientation

Legom supports OEM and ODM services for the 910010CC and 910011CC Thermostatic Mixing Valve series. Customization options include connection size, factory temperature set point, and body configuration. All customization projects maintain compliance with applicable TMV3 and quality system requirements. Contact us via WhatsApp or info@legomsmart.com.