Series Overview
• ANSI B73.1 low‑flow chemical process pump
• Low‑flow / high‑head hydraulic design
• End suction / top discharge
• Radial vane impeller
• Bare pump construction
• Back pull out rotating assembly
• Shares mechanical architecture with 2196 and 2196R
Hydraulic Coverage
• Sizes: 1×1.5‑6LF through 3×4‑13LF
• Flow range: 5–500 GPM
• Head range: 50–700 ft
• Efficiency: moderate (BEP 30–60%)
• Impeller type: enclosed low‑flow radial vane
• Impeller trims: full, cut
• Designed for stable operation at reduced capacities
Material Options
• Ductile Iron (DI)
• 316 Stainless Steel
• CD4MCu Duplex Stainless
• Alloy‑20
• Hastelloy C
• Optional sleeve coatings: HMC / NCB
• Wetted component upgrades available by alloy
Mechanical Architecture
• Radial vane impeller with balance holes
• Confined casing gasket
• Integral foot support
• Self‑venting casing
• Stuffing box or seal chamber
• External axial impeller adjustment
Frame Sizes
• STO: 1.375 in shaft
• MTO: 1.750 in shaft
• LTO: 2.125 in shaft
• LF models do not use XLO
• Frame determines bearing size, shaft stiffness, allowable HP
Back Pull Out Assembly
• Rotating element removable without disturbing piping
• Includes shaft, bearings, bearing housing, isolators, impeller
• Consistent across 2196, 2196LF, 2196R
Power Ends
• Fully assembled units
• SKF radial and thrust bearings
• Labyrinth isolators
• Magnetic drain plug
• Enlarged oil reservoir
• Sight glass
• Available in STO, MTO, LTO
• Interchangeable across all 2196 variants
Forever Frame™ (316 Stainless Steel Power End)
• 316 stainless steel construction
• Improved thermal stability
• Corrosion resistance
• Compatible with STO, MTO, LTO
• Includes stainless fasteners, plugs, sight glass, frame foot
Shaft Kits
• Available for STO, MTO, LTO
• Sleeve‑type and solid‑type assemblies
• Material options: 4140 + 316 sleeve, 316 + 316 sleeve, 316 solid
• Kits include bearings, sleeve (if applicable), hardware, coupling key
2196LF Variant
• Low‑flow hydraulic geometry
• High‑head performance
• Stable operation at reduced capacities
• Interchangeable with 2196 components in STO, MTO, LTO
• Maintains ANSI dimensional envelope
Cross Compatibility
• Fully ANSI/ASME B73.1 compliant
• Interchangeable with Goulds 3196LF
• Frame groups: STO ↔ ST, MTO ↔ MT, LTO ↔ LT
• Compatible with PumpWorks PWA‑LF
• Back pull out assemblies follow ANSI serviceability pattern
• Forever Frame maintains compatibility
