Market Forge Gas-Fired Steam Jacketed Kettle- 30 Gallon. Model: MF-30. S/N: 32140. Nat'l Bd: 4128. MAWP @ 300 °F: 40 psi. Maximum temperature: 300 °F. Inner shell thickness: 0.071 in. Outer shell thickness: 0.062 in. Inner shell radius: 11.50 in. Outer shell radius: 11.75 in. Kettle is mounted in an enclosed cabinet base. Inlets: (1) 1/2 in. dia. FNPT (jacket), (1) 1 in. dia. port (gas). Outlets: (1) 1/2 in. dia. FNPT (jacket), (1) 1 in. dia. FNPT valve, (1) 4 in. dia. vent. Overall dimensions: 34 in. L x 28-1/2 in. W x 40 in. H.