The Elster Jeavons J78R/RS Black Spring is a genuine OEM replacement part designed to give precise pressure regulation and long life in Elster J78R and J78RS gas regulators. Suitable for ½", ¾" and 1" regulator models, this high quality spring gives consistent outlet pressure across a wide range of commercial and industrial gas systems.
With outlet pressure ranges of 15–23 mbar (J78R) and 10–20 mbar (J78RS) for ½"–¾" regulators, and 20–24 mbar (J78R) / 13–26 mbar (J78RS) for 1" regulators, the Black Spring is designed for accurate and reliable operation in tough environments.
Each spring is colour coded for easy identification and maintenance, so installers can match the correct part to their pressure requirements without confusion.
Perfect for commercial, industrial and utility gas regulation systems, this spring is manufactured to Elster’s high standards to keep your system efficient and safe.
The Elster Black Spring is trusted by engineers for its precision, durability and proven compatibility with Elster’s J78 regulator range. It gives reliable outlet pressure control in all conditions – so you get consistent performance and compliance with gas safety standards.
Buy now and keep your gas system precise.
| Brand | Elster |
|---|---|
| Model | J78R/RS Black Spring |
| Part Number | J1105C-035A |
| Compatible Regulators | Elster Jeavons J78R and J78RS (½", ¾", 1") |
| Spring Range – ½” & ¾” Regulators | J78R: 15–23 mbar / J78RS: 10–20 mbar |
| Spring Range – 1” Regulators | J78R: 20–24 mbar / J78RS: 13–26 mbar |
| Colour Code | Black |
| Material | High-grade spring steel |
| Type | Regulator Spring |
| Suitable Applications | Commercial and industrial gas regulators |
| Sub Brand | Honeywell Elster |
| Warranty | Manufacturer’s Standard Warranty |
