Sapag Series 8400/8500/8490/8590 Safety Relief Valves

Sapag Series 8400 and 8500 safety relief valves for use in API-526 process applications.

Sapag series 8400 and 8500 safety relief valves for API-526 process applications

Key Features

Improved, rugged nozzle ring design.
Improved disc insert retention for ease of maintenance.
Standard Inconel 625 bellows and flange material for superior corrosion resistance, longer service life and a wider range of applications.
Universal disc holder allows for simple and cost-effective conversions from conventional to balanced bellows design.
Standard threaded bellows design for ease of maintenance and conversion from conventional to balanced bellows design.
Improved corrosion resistance with standard 316 stainless steel adjusting bolt lock nut and nozzle ring set screw materials.
Field proven liquid trim style for stable, non-chattering operation on liquid and gas service.
Standard chrome steel spring for an operating range of -28°C to +343°C.
Easily converted to any type cap or lifting lever construction, liquid trim, soft-seat or balanced bellows configurations.
Test Gag/Plug supplied as standard.