{"product_id":"drayton-trv4-chrome-15mm-angled-trv-lockshield-valve-pack","title":"Drayton TRV4 Chrome 15mm Angled TRV Lockshield Valve Pack 07 05 174","description":"\u003cdiv style=\"font-size:16px; max-width:900px; font-family:Arial,Helvetica,sans-serif; color:#222; line-height:1.6;\"\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eDrayton TRV4 Chrome 15mm Angled TRV \u0026amp; Lockshield Pack (MPN 07 05 174)\u003c\/strong\u003e is a \u003cstrong\u003efully chrome-matched radiator valve pair\u003c\/strong\u003e for premium and designer heating installations. The pack combines a \u003cstrong\u003e15mm angled TRV4 body with chrome liquid-filled sensing head\u003c\/strong\u003e and a \u003cstrong\u003ematching chrome lockshield\u003c\/strong\u003e — creating a consistent all-chrome finish suited to exposed pipework, bathroom heated towel rails, period-style interiors, and chrome column radiators. The TRV4 Chrome carries the \u003cstrong\u003eTELL Class I energy efficiency rating\u003c\/strong\u003e, the same as the Classic variant, and is approved to \u003cstrong\u003eBS EN 215\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003cdiv style=\"background:#008377CF; border-radius:6px; padding:18px 12px; display:flex; flex-wrap:wrap; justify-content:space-around; margin:18px 0;\"\u003e\n\u003cdiv style=\"text-align:center; padding:0 16px;\"\u003e\n\u003cdiv style=\"font-size:22px; font-weight:700; color:#fff;\"\u003eClass I\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#ddf4f2; text-transform:uppercase; letter-spacing:.5px;\"\u003eTELL Efficiency\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align:center; padding:0 16px;\"\u003e\n\u003cdiv style=\"font-size:22px; font-weight:700; color:#fff;\"\u003eFull Chrome\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#ddf4f2; text-transform:uppercase; letter-spacing:.5px;\"\u003eMatched Pair\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align:center; padding:0 16px;\"\u003e\n\u003cdiv style=\"font-size:22px; font-weight:700; color:#fff;\"\u003e15mm\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#ddf4f2; text-transform:uppercase; letter-spacing:.5px;\"\u003eAngled Pack\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align:center; padding:0 16px;\"\u003e\n\u003cdiv style=\"font-size:22px; font-weight:700; color:#fff;\"\u003eReverse Flow\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#ddf4f2; text-transform:uppercase; letter-spacing:.5px;\"\u003eBody Feature\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align:center; padding:0 16px;\"\u003e\n\u003cdiv style=\"font-size:22px; font-weight:700; color:#fff;\"\u003eEN215\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; color:#ddf4f2; text-transform:uppercase; letter-spacing:.5px;\"\u003eCertified\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"border-left:4px solid #008377; background:#f0faf9; border-top:1px solid #b2e0db; border-right:1px solid #b2e0db; border-bottom:1px solid #b2e0db; border-radius:0 6px 6px 0; padding:12px 16px; margin:10px 0;\"\u003e\n\u003cstrong style=\"color:#008377;\"\u003eFull Chrome Match\u003c\/strong\u003e\u003cbr\u003eBoth the TRV sensing head and the lockshield cap are chrome finish, providing a co-ordinated look at both ends of the radiator — ideal for bathrooms, heated towel rails, and designer radiator installations where aesthetics matter.\u003c\/div\u003e\n\u003cdiv style=\"border-left:4px solid #c0392b; background:#fff5f5; border-top:1px solid #ffd5d5; border-right:1px solid #ffd5d5; border-bottom:1px solid #ffd5d5; border-radius:0 6px 6px 0; padding:12px 16px; margin:10px 0;\"\u003e\n\u003cstrong style=\"color:#c0392b;\"\u003eSystem Commissioning\u003c\/strong\u003e\u003cbr\u003eFlush to BS7593 before commissioning and dose with inhibitor. Maintain differential pressure below 0.2 bar for quiet operation — use a Drayton DTB by-pass valve where required.\u003c\/div\u003e\n\n\u003cdiv style=\"font-size:18px; font-weight:700; color:#008377; border-bottom:2px solid #008377; padding-bottom:6px; margin:24px 0 12px 0;\"\u003eKey Features\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; gap:14px; margin:18px 0;\"\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:220px;\"\u003e\u003cdiv style=\"border:1px solid #e0e0e0; border-radius:8px; padding:16px; background:#fff;\"\u003e\n\u003cdiv style=\"font-size:24px; margin-bottom:8px;\"\u003e✨\u003c\/div\u003e\n\u003cdiv style=\"font-weight:700; color:#008377; border-bottom:2px solid #008377; padding-bottom:4px; margin-bottom:8px;\"\u003eAll-Chrome Finish\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#444;\"\u003eBoth the TRV head and the lockshield body\/cap are chrome — \u003cstrong\u003eno mismatched white plastic\u003c\/strong\u003e at either end of the radiator. Particularly suited to bathrooms, ensuites, and visible pipework runs.\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:220px;\"\u003e\u003cdiv style=\"border:1px solid #e0e0e0; border-radius:8px; padding:16px; background:#fff;\"\u003e\n\u003cdiv style=\"font-size:24px; margin-bottom:8px;\"\u003e🏆\u003c\/div\u003e\n\u003cdiv style=\"font-weight:700; color:#008377; border-bottom:2px solid #008377; padding-bottom:4px; margin-bottom:8px;\"\u003eClass I Efficiency Rating\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#444;\"\u003eThe TRV4 Chrome holds the \u003cstrong\u003eTELL Class I energy efficiency rating\u003c\/strong\u003e — unlike the Anthracite variant, Chrome is rated the same as Classic, covering response speed, setpoint accuracy, and pressure\/temperature stability.\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:220px;\"\u003e\u003cdiv style=\"border:1px solid #e0e0e0; border-radius:8px; padding:16px; background:#fff;\"\u003e\n\u003cdiv style=\"font-size:24px; margin-bottom:8px;\"\u003e🔁\u003c\/div\u003e\n\u003cdiv style=\"font-weight:700; color:#008377; border-bottom:2px solid #008377; padding-bottom:4px; margin-bottom:8px;\"\u003eReverse Flow Angled Body\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#444;\"\u003eInstalls on flow or return with the head vertical or horizontal — the same flexible reverse-flow design found across the TRV4 range.\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:220px;\"\u003e\u003cdiv style=\"border:1px solid #e0e0e0; border-radius:8px; padding:16px; background:#fff;\"\u003e\n\u003cdiv style=\"font-size:24px; margin-bottom:8px;\"\u003e💧\u003c\/div\u003e\n\u003cdiv style=\"font-weight:700; color:#008377; border-bottom:2px solid #008377; padding-bottom:4px; margin-bottom:8px;\"\u003eDouble Gland Seal\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#444;\"\u003ePrevents leakage and allows the chrome sensing head to be \u003cstrong\u003eremoved without draining the system\u003c\/strong\u003e — minimising downtime and disruption for head replacement in occupied properties.\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"margin:18px 0;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#fff; font-weight:700; padding:10px 14px; border-radius:6px 6px 0 0;\"\u003eTechnical Specifications\u003c\/div\u003e\n\u003ctable style=\"width:100%; border-collapse:collapse; border:1px solid #d0eeec;\"\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px; width:50%; font-weight:600; background:#f4fcfb;\"\u003eMPN\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; background:#f4fcfb;\"\u003e07 05 174\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px; width:50%; font-weight:600; background:#fff;\"\u003eAlso Available (straight pack)\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; background:#fff;\"\u003e07 05 175\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px; width:50%; font-weight:600; background:#f4fcfb;\"\u003eChrome TRV Only (boxed)\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; background:#f4fcfb;\"\u003e07 05 150C (angled); 07 05 151C (straight)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px; width:50%; font-weight:600; background:#fff;\"\u003eChrome Head Only\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; background:#fff;\"\u003e07 03 013\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px; width:50%; font-weight:600; background:#f4fcfb;\"\u003eFinish\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; background:#f4fcfb;\"\u003eFull Chrome (head + lockshield)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px; width:50%; font-weight:600; background:#fff;\"\u003eConnection\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; background:#fff;\"\u003e15mm compression (BS EN 1254-2); ½\" BSP radiator thread (BS EN 10226)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px; width:50%; font-weight:600; background:#f4fcfb;\"\u003eBody Material\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; background:#f4fcfb;\"\u003eChrome-plated brass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px; width:50%; font-weight:600; background:#fff;\"\u003eSetting Range\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; background:#fff;\"\u003eApprox. 10°C – 30°C (1–5 + MAX)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px; width:50%; font-weight:600; background:#f4fcfb;\"\u003eFrost Protection\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; background:#f4fcfb;\"\u003eBelow 8°C (marked *)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px; width:50%; font-weight:600; background:#fff;\"\u003eMax Flow Temperature\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; background:#fff;\"\u003e110°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px; width:50%; font-weight:600; background:#f4fcfb;\"\u003eMax Sensor Temperature\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; background:#f4fcfb;\"\u003e50°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px; width:50%; font-weight:600; background:#fff;\"\u003eMax Test Pressure\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; background:#fff;\"\u003e20 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px; width:50%; font-weight:600; background:#f4fcfb;\"\u003eMax Static Pressure (compression)\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; background:#f4fcfb;\"\u003e10 bar at 65°C; 6 bar at 110°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px; width:50%; font-weight:600; background:#fff;\"\u003eSensor Sensitivity\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; background:#fff;\"\u003e0.22 mm\/°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px; width:50%; font-weight:600; background:#f4fcfb;\"\u003eHysteresis\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; background:#f4fcfb;\"\u003e0.4 K\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px; width:50%; font-weight:600; background:#fff;\"\u003eEnergy Efficiency Rating\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; background:#fff;\"\u003eTELL Class I\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px; width:50%; font-weight:600; background:#f4fcfb;\"\u003eStandard\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; background:#f4fcfb;\"\u003eBS EN 215 \/ Keymark (valid to 31.03.2029)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 12px; width:50%; font-weight:600; background:#fff;\"\u003eManufacturer\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; background:#fff;\"\u003eDrayton by Schneider Electric\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"font-size:18px; font-weight:700; color:#008377; border-bottom:2px solid #008377; padding-bottom:6px; margin:24px 0 12px 0;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdiv style=\"margin:18px 0;\"\u003e\n\u003cdetails style=\"border:1px solid #d0eeec; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#fff; padding:12px 16px; cursor:pointer; font-weight:600; list-style:none;\"\u003eDoes TRV4 Chrome carry the same Class I rating as Classic?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; background:#f9fefe; font-size:15px;\"\u003eYes — unlike TRV4 Anthracite, the TRV4 Chrome carries the full \u003cstrong\u003eTELL Class I energy efficiency certification\u003c\/strong\u003e, the same as TRV4 Classic and White.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #d0eeec; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#fff; padding:12px 16px; cursor:pointer; font-weight:600; list-style:none;\"\u003eCan I buy just the chrome sensing head to retrofit onto an existing TRV4 body?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; background:#f9fefe; font-size:15px;\"\u003eYes — MPN 07 03 013 is the TRV4 Chrome sensing head sold separately. It fits all TRV4 valve bodies (not TRV3).\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #d0eeec; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#fff; padding:12px 16px; cursor:pointer; font-weight:600; list-style:none;\"\u003eWhat is the difference between 07 05 174 and 07 05 150C?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; background:#f9fefe; font-size:15px;\"\u003e07 05 174 is the complete chrome pack including both the chrome TRV and a matching chrome lockshield. 07 05 150C is the chrome TRV body and head sold individually (no lockshield).\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #d0eeec; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#fff; padding:12px 16px; cursor:pointer; font-weight:600; list-style:none;\"\u003eIs this pack appropriate for a heated towel rail?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; background:#f9fefe; font-size:15px;\"\u003eYes — the chrome finish is ideal for bathroom towel rails. Ensure the towel rail's radiator connections are standard ½\" BSP female. Also check that the towel rail is correctly sized for the room heat load, as TRVs cannot compensate for an undersized emitter.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #d0eeec; border-radius:6px; margin-bottom:8px; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#fff; padding:12px 16px; cursor:pointer; font-weight:600; list-style:none;\"\u003eIs there a straight-body chrome pack?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; background:#f9fefe; font-size:15px;\"\u003eYes — MPN 07 05 175 is the straight 15mm chrome TRV and chrome lockshield pack for inline pipe configurations.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Drayton Controls","offers":[{"title":"Default Title","offer_id":64640147849565,"sku":"0705174","price":51.3,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/0705174-Drayton-TRV4-15mm-Angled-All-Chrome-TRV-and-Chrome-Lockshield-Twin-Pack-1.jpg?v=1778223370","url":"https:\/\/qualityheating.co.uk\/products\/drayton-trv4-chrome-15mm-angled-trv-lockshield-valve-pack","provider":"AIZO Quality Heating","version":"1.0","type":"link"}