Astralpool Techrite - Hurlcon Astralpool Gas Regulator Valve for HX 70, HX 120, WX Gas Heaters
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Astralpool Techrite - Hurlcon Astralpool Gas Regulator Valve for HX...
Astralpool
Techrite CV983 Gas Valve Regulator for Hurlcon and AstralPool HX70, HX120, JX130, JX160, and WX Wilton gas spa heaters. May also suit older Minimax MM heaters, and Hurlcon Hendy H Boilers. This is the Techrite version that supersedes all previous gas valves from Honeywell and White Rogers.
We keep these physically in stock.
Fast Shipping or Pick-Up
Installation of these valves must be performed by authorised persons and must be in compliance with gas installation codes and any local authority regulations.
Note in older heaters with White Rogers and Honeywell gas valves, some internal copper bending or minor modification may be necessary when retrofitting this Techrite valve.
Hurlcon Part No: 477142 was Replaced by 477143, which is now 477143 Techrite. Supercedes earlier Honeywell & White Rogers gas valves.
Current Valves:
- ON/OFF operation
- Max Pressure: 3.5kPa
- 24VAC 50/60Hz
- Reg 0.95 kPa (NG)
- T .amb -10/80C
- 1649 AGA 8054 G 1739
- CV983
- Contronik CV983
- Kupo CV 983
Details / Specifications:
- Model : CV 983
- Combination gas control include a ON-OFF switch for safety shut-off.
- Solenoid operated safety valve and burner valve by normal control for flame ignition.
- Two automatic solenoid shut-off valves with safety valve sequencing function for direct burner ignition operation.
- Main outlet pressure adjustment
- Outlet Pressure Adjustment Range: NG 2.5"~3.5" W.C. / LPG 8"~12" W.C.
- Maximum Inlet Pressure: 35 mbar
- Flow Capacity (1" W.C. Pressure Drop): NG: 150,000 BTU/hr / LPG: 243,000 BTU/hr
- Operating Temperature: -23°C~80°C
- Max Inlet pressure : 3.5 kPa
- Max Flow : 2.3 M3/h (Air)
- Regulator Range : 0.7-0.1 kPa (NG)
- 2.0-2.6kPA (Propane)
- Regulator Class : 3
- Regulator Grade : 20
- Valve Class : 2
- Temperature Limitations : -10 + 80 ºC
- Voltages : 24 and 240 VAC
- Mounting Limitations : Any position except coil facing down
- Connections : 15mm (1/2") BSP(1SO7)
Manufacturer Catalogues, Diagrams & Part Numbers
Need exploded views, spare part numbers, product numbers, diagrams, or more product information? See the manufacturer catalogues: AstralPool Catalogue 2026 | Zodiac Catalogue 2026
In plumbing, named sizes are not the actual measurements. A pipe called “50mm” or “2"” does not measure 50 mm across. Instead, it follows nominal sizing, an internationally-standardised naming system.
Use the Outside Diameter (OD) to check your pipe against fittings. Below is a quick reference for common spa & pool pipe sizes:
| Imperial Name | Metric Name | Pipe Diameter (OD) |
|---|---|---|
| 1/2" | 15mm | ~21.2–21.5 mm |
| 3/4" | 20mm | ~26.6–26.9 mm |
| 1" | 25 mm | ~33.4–33.7 mm |
| 1.5" | 40 mm | ~48.1–48.4 mm |
| 2" | 50 mm | ~60.2–60.8 mm |
| 2.5" | 65 mm | ~75.2–75.5 mm |
These are nominal sizes and are designed to fit matching fittings — not to measure exactly what their name suggests. These are based on PVC Pressure Pipe AS/NZ 1477 Dimensions1.
- º Internal diameters vary slightly by manufacturer and class.
- 1 Not all pool/spa fittings match these dimensions exactly. Some do not follow Australian or international standards. Chinese spas may use proprietary fittings.
Understanding Plumbing Sizes & Nominal Measurements
Plumbing sizes can be confusing. PVC and many other pipe systems use nominal sizes—the size is a name, not the exact measured dimension. This convention is used across most pool and spa systems so that pipes and fittings remain compatible.
Why pipe sizes don’t match the measurements
The Nominal Pipe Size (NPS) system standardises pipe dimensions so that pipes, fittings, valves, and accessories interoperate. Plumbers work with these nominal names every day, but DIYers can be tripped up if they try to match by a tape-measure alone.
How to Measure Pipe Correctly
-
Pipe size is identified by:
- The pipe’s Outside Diameter (OD).
- The fitting’s Inside Diameter (ID) (socket opening).
- Pipe Class / Schedule (e.g., Class 9, 12, 18 or Sch 40) relates to wall thickness and therefore the Internal Diameter (ID) and pressure rating.
- The outside diameter of a fitting is not useful (wall thickness varies by manufacturer).
Hose & Tube Dimensions
Common flexible hose sizes used in pool/spa systems (approximate IDs).
| Imperial Name | Metric Name | Inside Diameter (ID) |
|---|---|---|
| 3/8" | 9–10 mm | ~9 mm |
| 3/4" | 19 mm | ~19 mm |
BSP – British Standard Pipe Thread Sizes
BSP thread names are also nominal. The thread OD will not equal the nominal name.
| BSP Thread Size Naming | Outside Diameter (mm / inch) | TPI |
|---|---|---|
| 1/16" BSP | 7.7 mm / 0.304" | 28 |
| 1/8" BSP | 9.7 mm / 0.383" | 28 |
| 1/4" BSP | 13.16 mm / 0.518" | 19 |
| 3/8" BSP | 16.66 mm / 0.656" | 19 |
| 1/2" BSP / 15 mm | 20.99 mm / 0.825" | 14 |
| 5/8" BSP | 22.99 mm / 0.902" | 14 |
| 3/4" BSP / 20 mm | 26.44 mm / 1.041" | 14 |
| 7/8" BSP | 30.20 mm / 1.189" | 14 |
| 1" BSP / 25 mm | 33.25 mm / 1.309" | 11 |
| 1-1/4" BSP | 41.91 mm / 1.650" | 11 |
| 1-1/2" BSP / 40 mm | 47.80 mm / 1.882" | 11 |
| 2" BSP / 50 mm | 59.61 mm / 2.347" | 11 |
| 2-1/4" BSP | 65.71 mm / 2.587" | 11 |
| 2-1/2" BSP | 75.18 mm / 2.960" | 11 |
| 3" BSP | 87.88 mm / 3.460" | 11 |
| 4" BSP | 113.03 mm / 4.450" | 11 |
| 5" BSP | 138.43 mm / 5.450" | 11 |
| 6" BSP | 163.83 mm / 6.450" | 11 |
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477143