Nabic Fig 500T Combined Pressure & Temperature Relief Valve
Nabic
NABIC is one of the world’s leading manufacturers of safety and pressure relief valves, with a heritage spanning more than 150 years in pressure protection technology. Manufactured in the UK, NABIC valves are trusted across commercial, industrial and process industries for their proven reliability, precision engineering and compliance with internationally recognised standards. Designed to safeguard boilers, pressure vessels and fluid systems, NABIC products deliver dependable overpressure protection and long service life in demanding applications.
Key Information
The NABIC Fig 500T Combined Pressure & Temperature Relief Valve is specifically designed to provide dual safety protection for unvented hot water systems, safeguarding against both excessive pressure and excessive temperature. Featuring independent pressure and temperature relief mechanisms within a single valve, the Fig 500T automatically discharges hot water if either the preset pressure or the fixed temperature limit is exceeded. Manufactured from durable gunmetal with a resilient Viton soft seat, each valve is factory set, tested and sealed, with in-house certified pressure setting available to suit your application.
Features
- Dual Pressure & Temperature Protection – Independent pressure and temperature relief mechanisms provide enhanced system safety for unvented hot water installations.
- Viton Soft Seat Design – Resilient seat provides excellent sealing performance and dependable long-term operation.
- Factory Set & Tested – Every valve is pressure tested, factory set and supplied with a tamper-proof seal, with pressure test certificates available on request.
- Certified In-House Pressure Setting – As a NABIC trained and approved distributor, we can set and certify your valve to the required pressure prior to dispatch.
- WRAS & BS EN ISO 4126 Compliant – Designed and tested in accordance with BS EN ISO 4126, BS 6283, and WRAS approved for applicable water applications.
Set Pressure
As a NABIC trained and approved distributor, we can set and certify your valve to the required pressure prior to dispatch.
| VIP Code | Nabic Code | Size |
|---|---|---|
| 46/0511/020 | N-500T-020 | 3/4″ |
| 46/0511/025 | N-500T-025 | 1″ |
| 46/0511/032 | N-500T-032 | 1 1/4″ |
| 46/0511/040 | N-500T-040 | 1 1/2″ |
| 46/0511/050 | N-500T-050 | 2″ |
| 46/0511/065 | N-500T-065 | 2 1/2″ |


