Skip to main content

page top
See all in Gas Safety Equipment

9400 Series Industrial Relief Valve

Preset relief valve for industrial applications
8309412-01-1 shown

9400 Series gas phase industrial relief valves provide cost-effective protection against over-pressurization by blowing off vapor and gases from pipes, pressure vessels, and system components. The relief valve gradually opens as the inlet pressure increases above the set point. The CONCOA 9400 Series industrial relief valve offers excellent discharge capacity and field adjustability, and the unique design also provides an accurate cracking pressure with zero leakage up to 98% of the nominal set pressure.

  • Encapsulated seal within the poppet prevents leakage and cold flow
  • Captive seat design minimizes wetted surface area to help reduce contamination
  • High flow design combined with narrow band springs minimizes system pressure rise as flow demand increases
  • Body: Brass
  • Poppet: 303 Stainless steel
  • Spring: 302 Stainless steel
  • Crack pressure tolerance: Factory preset ± 5% on increasing pressure
  • Relief flow: Full rated flow @ 110% of nominal set pressure
  • Proof pressure: 3700 PSIG (255 BAR)
  • Burst pressure: >5000 PSIG (345 Bar)
  • Conformances: Cleanliness meets or exceeds CGA G-4.1 (excludes 8309415-01-1)
◂ scroll to see more ▸ 
Part Number Nominal Set Pressure Range Adjustment Range Connections Seal Temperature Range
8309412-01-1 Preset @ 220 PSIG (15 BAR) 130 -310 PSIG (9 - 21 BAR) 1/2 in MNPT x 1/2 in FNPT FKM -20°F to 400°F
(-30°C to 205°C )
8309413-01-1 Preset @ 500 PSIG (34 BAR) 260 - 600 PSIG (18 - 41 BAR) 1/2 in MNPT x 1/2 in FNPT FKM -20°F to 400°F
(-30°C to 205°C )
8309414-01-1 Preset @ 100 PSIG (7 BAR) 80 - 120 PSIG (5.5 - 8 BAR) 1/4 in MNPT x 1/4 in FNPT Neoprene -40°F to 300°F
(-40°C to 150°C )
8309415-01-1 Preset @ 20 PSIG (1.5 BAR) 8 - 36 PSIG (0.5 - 2.5 BAR) 1/2 in MNPT x 1/2 in FNPT Neoprene -40°F to 300°F
(-40°C to 150°C )
◂ scroll to see more ▸ 
Document
Language
ID Number
Revision
9400 Series Relief Valves (Gas Phase Relief Valves) Catalog Page
English
IN9400RV
M
830-9412 830-9413 830-9414 Relief Valves Installation and Operation
English
ADI9902
D

prop 65 warningWARNING: This product can expose you to chemicals including Lead, Chromium, Nickel, and 1-3 Butadiene, which are known to the state of California to cause cancer, birth defects, or other reproductive harm. And, this product can expose you to chemicals including Bisphenol A (BPA) which is known to the State of California to cause female reproductive harm. For more information go to www. PSWarnings.ca.gov.

7