HML Horizontal Multistage Splitcase

The HML multistage splitcase pumps are used in a variety of commercial & industrial applications where high temperature and high pressure are present. HML pumps are industry leading from a feature & benefits standpoint and are specifically designed for the boiler feed markets. This heavy wall, radial, enclosed, 304 investment cast stainless steel impeller design provides a very broad operating range and steep curve slope. These two-stage split case pumps also feature opposed, hydraulically balanced rotor designs eliminating the need for expensive balancing drums. This hydraulically balanced design also allows for a single row inboard and single row outboard bearing arrangement with optional double row bearings at either location. The new Unified-Bore is another CPS-Pumps exclusive design feature that allows the use of packing or component mechanical seal without the need of additional case line boring. Each model features 250# cast dimensional flanges and 420 stainless steel shafting. These industry exclusive features makes this product adaptable for the building trades and HVAC applications.

Flow & Pressure Characteristics

Flows To: 900 GPM (204 m³/hr)
Heads To: 950 Feet (290 m)
Temperatures To: 350ºF (177ºC)
Speed Ranges: 3000 RPM To 3600 RPM

Size Range

1.5×2.5-8 (38/20) – 4×5-11 (100/28)

Features & Benefits

• Cast iron casing/investment cast 304 stainless steel impellers
• Exclusive Unified-Bore casing that allows the pump to be provided with packing or mechanical seals without any additional machining modification
• Grease lubricated bearings with optional ring oil lubrication
• Optional bearing isolators
• Fully removable rotor assembly
• Hydraulically opposed impeller orientation
• Multi-vane, enclosed, high efficiency impeller with broad band operating range
• Bronze, labyrinth style, case wear rings offer superior pressure boundary protection
• 125# suction/250# discharge flange drilled & tapped for easy connection to system piping
• Drilled & tapped suction & discharge flanges for easy connection to system piping
• Suction & discharge gauge connections standard
• Turned, ground and polished 420 stainless steel shaft standard
• Heavy duty, 304 stainless steel shaft sleeves with separate shaft sleeve nuts
• Packing standard with optional component and/or cartridge mechanical seals available
• Single row inboard and single row outboard bearings with optional double row at either location
• 50,000+ hour minimum L10 bearing life standard

Available Metallurgies

• Cast iron, ductile iron, 304 stainless steel fitted, 316 stainless steel fitted

Markets

• Building Trades
• Chemical Processing
• Food & Beverage
• General Industry
• Marine & Offshore
• Mining & Aggregate
• Power Generation
• Oil & Gas
• Pharmaceutical
• Pulp & Paper
• Water Resources