Coliter ® Brass Thermowell Ball Valve – Lead-Free, PN16, WRAS Certified
QF5016 Brass Thermowell Ball Valve – Lead-Free, PN16 with Integrated Temperature Sensor Port
The Coliter® QF5016 Brass Thermowell Ball Valve is a lead-free, full-port ball valve designed for heating, solar thermal, and HVAC systems requiring integrated temperature monitoring. It features a built-in thermowell port that allows insertion of a temperature probe or sensor without system shutdown, enabling accurate, real-time fluid temperature measurement while maintaining a sealed connection. Constructed from forged brass with a chrome-plated ball and PTFE seats, it ensures smooth quarter-turn operation and bubble-tight shut-off. The valve has ISO 228 (BSP) parallel threads and is rated at PN16 (1.6 MPa), suitable for water, non-corrosive liquids, and saturated steam within a working temperature range of -20°C to 110°C. Compliant with WRAS and ACS standards, the QF5016 is ideal for boiler outlets, heat exchangers, underfloor heating manifolds, and district energy systems where reliable flow control and temperature feedback are essential.
Installation diagram
Product Description
| DN | G | D | L | H | A |
| 15 | G1/2" | 13 | 51 | 50 | 95 |
| 20 | G3/4" | 17 | 55 | 53 | 95 |
| 25 | G1" | 22 | 65 | 59 | 127 |
| 32 | G1¼ | 24 | 68 | 65 | 127 |
| 40 | G1½ | 30 | 78 | 74 | 140 |
| 50 | G2" | 37 | 85 | 80 | 140 |
Technical Specifications
Nominal Pressure:1.6 MPa
Working Medium:Water, Non-corrosive Liquids, Saturated Steam
Working Temperature:-20℃ ≤ t ≤ 110℃
Pipe Threads:ISO 228
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Introduction to Brass ball valve
Coliter® offers a comprehensive range of lead-free brass ball valves for residential, commercial, and light industrial applications. Our portfolio includes full-bore designs with lever or knob handles, available in female/male/union thread configurations (BSP ISO 228), extended stems for buried installations, and specialized variants with filters or thermowells. All valves feature PTFE seats, chrome-plated balls, and are rated at PN16 (1.6 MPa), suitable for water, oil, gas, and saturated steam up to 110°C. Compliant with WRAS, ACS, and GB/T 17241 standards, Coliter brass ball valves deliver bubble-tight shut-off, low torque operation, and long service life across plumbing, heating, irrigation, and utility systems.
