or over-pressurization

CW-3004-4MGH

see part# 54

Bullard BULEVA20TIC EVA Powered Air Purifying Respirator (PAPR) System with 20TIC Acetate Lens Hood (Double Bib Tychem QC Hoods)

If you have purchased a Kit and it came with nozzles

Pirate Brand All Poly Jacket 50MM Thread 1"Entry 1/4" Bore Long Venturi SiAION Nozzle 1857-3570 or over-pressurizationNOZZLE, SiAION, LONG VENTURI, 1 4" BORE, 1" ENTRY, 50MM THREAD, ALL POLY JACKETSiAION HIGH PERFORMANCE & LIGHT WEIGHT MATERIAL SIAION NOZZLES OFFER SERVICE LIFE AND DURABILITY SIMILAR TO TUNGSTEN CARBIDE, BUT THESE NOZZLES ARE ONLY ABOUT HALF THE WEIGHT OF TUNGSTEN CARBIDE NOZZLES. SIAION NOZZLES ARE AN EXCELLENT CHOICE WHEN OPERATORS ARE ON THE JOB FOR LONG PERIODS AND PREFER A LIGHTWEIGHT NOZZLE.