PRODUCTS Back to Catalog Valves 557 Pressure gauge facebook twitter linkedin email Accuracy class: UNI 2,5. Temperature range: -20–90°C. Category: Valves Manufacturer Caleffi Tag: Gauges Related Products 503 Temperature/pressure gauge 503 Temperature/pressure gauge 688 Temperature gauge 688 Temperature gauge 5335 5335H PRV Next Product 688 Temperature gauge Previous Product 5335 5335H PRV Product Inquiry Form Get the right solution for your needs Radheat provides quality and reliabilty for a lifestyle you deserve.CONTACT US