مناقصه SURFACE SAFETY VALVE- SURFACE SAFETY VALVE CONSIST OF REVERSE ACTING GATE VALVE FULL BORE 1/4 IN ACTUATOR BSKER TYPE E OR OTIS TYPE UX ALL NECESSARY TUBING AND FITTINGS TO COMPLETE THE SYSTEM BODY AND SEAT & GATE FORGED SEAT & GATE COATED BY TUNGSTEN CARNIDE ALL TESTS HYDRO BODY % SEAT GAS AIR ITP DOCUMENTS IS ESSENTIAL TO REVIEW & TECHNICAL EVALUATION REF CAMERON KAVERENER V. IN API PSI WP 1P/A IN BORE