Pentair Fairbanks Nijhuis Horizontal Split Case 1800 Series

PENTAIR FAIRBANK NIJHUIS 1800 Series

The 1800 Series is a modern design based on Fairbanks Nijhuis’s over 130 years of experience with the design, sales and manufacturing of split case pumps. Look through this bulletin and see what real accomplishments can be made when an imaginative approach is taken to the customer’s problem of moving liquids within a piping system.

Capacities to 15000 GPM (3407 m3/hr)
Heads to 663 Ft. (202 m)
Temperatures to 275˚F (135˚C)

STANDARD FEATURES

• Bronze fitted pump construction
• Bronze shaft sleeves
• Dynamically balanced impellers
• Bronze case wearing rings
• Twin volute on 10" and larger pumps
• Stainless steel impeller key
• Re-greaseable ball bearings
• Single row ball bearing (inboard)
• Double row ball bearing (outboard)
• Mechanical seals...single unbalanced (Model 1810 and 1840)
• Graphite and TFE lubricated acrylic packing
• Internal bypass between casing and stuffing box
• 125# ASA flanges
• 250 psi case working pressure
• Carbon steel shaft
• Stuffing box bushings
• Lifting lugs
• Hydrostatic test
• Cast integral bearing arms
• Water slingers and grease seals
• External bypass between casing and stuffing box (Model 1810 and 1840)
• Coupling guard (Model 1820)

OPTIONAL FEATURES

• All iron, all bronze or special alloy pump construction
• Hardened 440C stainless steel shaft sleeves (packing only)
• 316 stainless steel shaft sleeves (mechanical seal)
• Impeller wearing rings
• Oil lubricated ball bearings (Model 1820 horizontal pump)
• Mechanical seals
  • single unbalanced (Model 1820)
  • single balanced (all models)
• Stainless steel or Monel® shaft
• External bypass between casing and stuffing box (Model 1820)
• Steel drip rim, formed steel or fabricated steel bases
• Double extended shaft (Model 1820)
• Right- or left-hand rotation
• Certified performance test
• Packing with lantern ring (Model 1820)
• 250# ASA suction and discharge flanges
• Bottom suction or chairmounted pumps
• Water cooled cartridge caps