ZE range pump is a horizontal, single stage, radially split heavy duty centerline mounted process pump with single flow closed radial impeller. Axial suction branch, vertical radial discharge branch with flanges machined to meet ANSI or DIN standards. Selection is a available with two casing designs, ZE with wall thickness optimized to cover the various pressure ranges. Fully confined gasket between volute casing, casing cover and seal cover. Shaft sealing chamber per ISO21049(API682), specified for the installation of single and double mechanical seals, cartridge design is standard. Connections for flushing, cooling, heating, quench and buffer fluids. Piping as per API plans. Rugged fabricated steel API standard baseplate with drain pan and lifting lugs.
The pumps are designed for the delivery of most fluids found in refinery processes. The application ranges from liquid gases at low temperatures through light and heavy fuels up to gas oil containing solids and distillation residues at the highest temperatures.
ZE pumps can also be employed as turbines for the recovery of energy.
Design Features and Benefits
Casing Seal: Confined controlled compression gasket with metal to metal rabbet fit
Flanges: Backfaced ANSI B16.5 300#R. F. /600#R. F. Flanges with required serrations
DIN and DIN-EN flanges avaliable.
Pressure boundary components: Self venting, centerline discharge
Double volutes for larger sizes
Casing cover: Casing mounting feet and baseplate designed to meet API 610 nozzle loads.
2× API nozzle load option avaliable.
Impeller: Enclosed impeller provided for lower NPSHr
Dynamically balanced impeller
Wear rings and balance holes optimized to maximize seal and
Flanged Drain: Flanged drains are standard
Gussets or bracing available to suit customer specification
Cartridge shaft seal: ISO21049(API 682) seal chambers and flush piping for improved seal life
Single or dual cartridge type mechanical seals available to meet all process requirements
High duty radial and thrust bearings: Thrust bearings are back-to-back, 7300 series, 40° Angular contact with seal cages(machined brass cages optional)
For heavy duty applications double taper roller bearings are available.
Radial bearings are cylinder roller bearings, ball bearings are optional.
Coupling: Flexible metal spacer coupling available.
Bearing housing: 6 sizes of bearing housings cover the entire product range for maximum interchangeability.
Low noise fan added for high ambient or operating temperatures.
Oil sump heater available for low ambient conditions.
Optional oil mist lubrication available.
Carbon steel bearing housing finned for added heat dissipation and API 610 compliance.
Oil ring: Mixes the oil in the oil sump.
Prevents partially overheating
Seals: Nonmetallic, bronze, SS or INPRO type oil seals are available
Shaft: Extra heavy duty, large diameter shaft for low shaft deflection and long life for bearing and mechanical seal
Instrumentation: A variety of instrumentation is available for monitoring as pressure, temperature, vibration.