API 598 Test Pressure Table by Class
Shell and seat test pressures for gate, globe, check, and butterfly valves per API 598 with Class 150–600 reference.
Engineering reference
This page is part of the Supreme Valves technical resource library for plant engineers, EPC buyers, and maintenance teams. Values and procedures should be verified against the latest edition of the applicable standard and your project specification.
How to use this resource
- Confirm valve type, NPS/DN, pressure class, and design standard on the datasheet.
- Cross-check test pressures and materials with your inspection test plan (ITP).
- Request factory MTCs (EN 10204 3.1) and hydrostatic reports with RFQ.
For application-specific sizing, contact Supreme Valves engineering or use our quote builder.