Nash 904 / 905 Replacements: NES N904 Series – Single Stage, Dual Cone, Liquid Ring Vacuum Pumps and Compressors
Typically Ships From Stock
Our 30-900 HP pulp and paper vacuum pumps serve as direct replacements for Nash 904 vacuum pumps. Featuring a high-efficiency 20-vane rotor design that operates at relatively slow speeds, these pumps ensure higher reliability, reduced wear, and lower power consumption. They function seamlessly as both vacuum pumps and compressors, operating across wide ranges of rotations per minute. The N904 model is particularly suited for demanding applications in pulp & paper, geothermal power generation, and other high-capacity environments requiring exceptional reliability. We offer models from L to U, with capacities ranging from 2,200 to 17,200 CFM. Vacuum levels span from 5 to 27.5” Hg in vacuum pump mode and up to 14.7 psia when used as a compressor.
About N904 / N905 Series
Models: N904 L, M, P, R, S, T, U; 1, 2, 3 for L – U
Power Range: 30 HP to 900 HP
Capacity Range: 2,200 to 17,200 CFM
Maximum Vacuum: 27.5″ Hg
Maximum Compression: 14.7 psia
Material of Construction: Cast Iron/Stainless Steel Clad and Fitted – Stainless Steel 304/Stainless Steel 316
Features
- Drop-in replacement for classic 904 and 905 series. Ensures seamless integration and compatibility.
- Improves efficiency with lower power consumption. Enhances operational cost-effectiveness.
- Standard construction in cast iron with packing seals. Provides robust durability and reliability.
- Optional 304 or 316 stainless steel construction and cladding. Offers enhanced corrosion resistance options.
- Readily available parts and repair kits. Facilitates easy maintenance and downtime reduction.
- Available as a bare pump or as part of engineered systems. Provides flexibility in installation and application.
- Available in Single or Double Shaft configurations. Accommodates various operational needs.
- Available in Clockwise / Counter-Clockwise Rotations. Ensures adaptability to different setups.
- Includes a 2-year factory warranty. Ensures product reliability and peace of mind.
