Emerson Fisher N100 Series 1 in. FNPT Bypass Valve, 25 - 75 PSID Spring

Emerson Fisher's N100 Series is designed for bypass on 2 to 4 in. size pumps, the N100 Series is widely used on both LPG and Anhydrous Ammonia (NH‚ƒ) applications. The throttling action of the N100 series allows only surplus pump discharge to be returned to the tank. A venturi flow passage gives a boost effect, permitting a greater valve opening for increased flow at the lower pressure build-ups when bypassing full pump output. These features help to give rapid, stable liquid transfer and reduce dangerous pressure pulsations. The valves contain only one moving part- the piston style inner valve.

An external sensing line is not required because tank pressure registers through a hole in the inner valve. Complete field servicing can be made without removing the valve from the piping.

This product is backed by a 10 year warranty.

Note: All N100 Series bodies have 1/4 in. FNPT tapped and plugged boss on the side inlet for either a pressure gauge or a hydrostatic relief valve and have a temperature rating of -20 to 160°F (-29 to 71°C)

Features

• Closing Cap
• Pressure Sensing Orifice
• Piston Inner Valve
• Exclusive Venturi Passage
• UL Listed (4 in. Sizes are not UL Listed)

Specifications

• Pump Size: 2 in.
• Body Size: 1 in. FNPT
• PSID Setting: 50 psig (3.4 bar)
• PSID Range: 25 to 75 psig (1.7 to 5.2 bar)
• Maximum Inlet Pressure: 400 psig (27.6 bar)
• Temperature Capabilities: -20 to 160°F (-29 to 71°C)
• Warranty: 10 Years

Downloads

Instruction Manual (PDF Download)

Replacement Parts Sheet (PDF Download)

N100 Series Bypass Valve Schematic (PDF Download)