Type 414 Relief Valve / Backpressure Regulator

Type 414 Relief Valve / Backpressure Regulator The Type 414 pilot-operated relief valve/backpressure regulator is used for high-pressure nonaqueous liquid applications. The construction is suitable where pressures on the valve outlet will be essentially atmospheric.

They Type 414-6305B is used in nonaqueous applications where the pilot exhaust will be vented though the main valve outlet piping into a pressurized line.

Features

High Capacity
Excellent Reseating Capability
Minimal-Bleed Pilot
Tamper-Resistant
High Pressure

Body Size and End Connection Styles
NPS 1, 2, 3, 4, or 6 (DN 25, 50, 80, 100, or 150) body size with ANSI CL150 RF, CL300 RF, CL600 RF, or PN 16/25/40 flanged end connections.

Maximum Relief (Inlet) Pressure
1480 psig (102 bar) or body rating limit, whichever is lowest

Relief Set Pressure Range
100 to 1200 psig (6,9 to 82,7 bar) in three ranges

Pressure Registration
External

Temperature Capabilities

Nitrile (NBR) O-Rings and Urethane Wiper Ring: -20 to 180°F (-29 to 82°C)
Fluorocarbon (FKM) O-Rings and Urethane Wiper Ring: 0 to 180°F (-18 to 82°C)
Fluorocarbon (FKM) O-Rings and TFE Wiper Ring: 0 to 350°F (-18 to 177°C), limited to 180°F (82°C) for hot water