Boiler Hoses
Boilers are devices in solar heated hot water systems in order to finally heat the usage water by heating the water in solar collectors and circulating through flexible metal hoses located in a tank and used as serpentine.
Due to pressurization problems and freezing events that take place in systems which usage water is the same with the water circulating in the collector system, hot water systems with boilers are advantageous comparing with the systems without boilers which usage water is directly heated.
Using flexible metal hoses as serpentine in boilers has many advantages as efficiency resulted from high surface area comparing to steel pipes, installation ease for their flexibility and high corrosion resistance of stainless steel to corrosion and lime.
Arsenflex Flexible Metal Solar and Boiler Hoses
Lengths and inlet - outlet connections of Arsenflex Boiler Hoses are produced according to needs of boiler manufacturers and shipped in a stainless steel framework either as single or double serpentine when needed. Arsen creates solutions for stainless steel frameworks according to customer demands.
Arsenflex Solar and Boiler Hoses
Material Specifications of Boiler Hoses
| Hose | AISI 316L - 304L Stainless Steel |
| Connections | AISI 316 - 304 Stainless Steel |
General Dimensions and Operating Conditions of Boiler Hoses
| Hose Dimensions | 1/2" - 2" (DN12-DN50) |
| Fitting Dimensions | 3/8" - 21/2" (Inner or Outer Threads, Several Lenghts) |
| Temperature Rating | -270 / +600 °C |
| Pressure Rating | 8 - 20 bar |
Boiler Hose Connections and Specifications
Boiler connection hoses are produced either wide or standard pitch according to pressure rating. Though AISI 316L is usually preferred as raw material because of its high corrosion resistance, they may also be produced from AISI 304L stainless steel.
Standards Followed
| Male Side Threads | Conical threads according to ISO 7-1 |
| Female Side Threads | Cylindirical threads according to ISO 228-1 |
| Connection Type | According to EN ISO 10806 |
| Production | According to EN ISO 10380 |
Boiler Hose Dimensions and Operating Conditions
| DN | Inner Diameter | Outer Diameter | Tol.(±) | Static Bend Radius |
Wall Thickness | Pitch Type | Pressure Rating | Surface Area | Weight | |
|---|---|---|---|---|---|---|---|---|---|---|
| (mm) | (inch) | (mm) | (mm) | (mm) | rmin (mm) | (mm) | (Pitch) | (bar) | (m²/m) | (kg/m) |
| 12 | 1/2" | 12.4 12.0 |
16.7 16.7 |
0.40 | 19 | 0.15 0.30 |
Wide Standard | 16 20 |
0.07 0.08 |
0.09 0.19 |
| 16 | 5/8" | 16.6 16.1 |
22.0 21.8 |
0.40 | 25 | 0.18 0.30 |
Wide Standard | 10 16 |
0.10 0.11 |
0.14 0.28 |
| 20 | 3/4" | 20.3 20.0 |
26.0 26.7 |
0.40 | 30 | 0.20 0.30 |
Wide Standard | 10 16 |
0.12 0.16 |
0.16 0.39 |
| 25 | 1" | 25.6 25.4 |
31.7 32.3 |
0.40 | 35 | 0.20 0.30 |
Wide Standard | 8 12 |
0.15 0.20 |
0.24 0.48 |
| 32 | 11/4" | 34.3 | 40.8 | 0.40 | 50 | 0.30 | Standard | 10 | 0.23 | 0.55 |
| 40 | 11/2" | 40.0 | 49.5 | 0.40 | 55 | 0.40 | Standard | 9 | 0.29 | 0.94 |
| 50 | 2" | 49.8 | 59.8 | 0.40 | 60 | 0.50 | Standard | 8 | 0.37 | 1.19 |
Arsenflex Flexible Metal Solar and Boiler Hoses
Arsenflex Solar and Boiler Hoses
