Pressure Relief Valve - 4" Master Blaster - Stainless Steel - Female NPS Swivel Nut - 30 PSI MAWP/36 PSI Set Pressure/4HG - Includes 1/4" FNPT Gauge Port & 3/4" FNPT Ball Valve Connection - Rain Cover Installed - Pressure & Vacuum
- 316 Stainless Steel
- Flow Test Approved with National Board Testing Lab
- Exceeds Applicable DOT 407/412 Venting Requirements
- FEL/SIL Seals
- ¼" & ¾" NPT Ports for air/gauge
- 4" NPS Swivel Nut with PTFE O-Ring seal
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