- Body Sizes and End Connection Styles
- Types 289A and 289U: 1/4 NPT
Type 289H: 1, 2 NPT
Type 289HH: 1 NPT
Type 289L: 3/4, 1 NPT
Type 289U: 1/4 NPT
- Maximum Allowable Relief (Inlet) Pressure
- 100 psig / 6.9 bar
- Relief Set Pressure Ranges (5 models)
- 5wc to 50 psig / 25mbar to 3.5 bar
- Pressure Registration
- Internal
- Temperature Capabilities
- Nitrile (NBR) and Neoprene (CR) Elastomers: -20 to 150°F / -29 to 66°C Fluorocarbon (FKM): 20 to 300°F / -7 to 149°C Available with Types 289H and 289HH only
- Approximate Weights
- Type 289A and 289U: 0.75 Pounds / 0.3 kg
Type 289H: 1 NPT – 4 Pounds / 2 kg, 2 NPT – 15 Pounds / 7 kg
Type 289HH: 4 Pounds / 2 kg
Type 289L: 15 Pounds / 7 kg
- 289H: Relief Adjustment Ranges
- 0.5 to 2.25 psig / 34 to 155 mbar
- 289H: Maximum Relief (Inlet) Pressure
- 25 psig / 1.7 bar
