Product Overview
The GR40 SMT16B-150L-S1 RF2V is a representative model of the Italian SETTIMA SMT16B series three-screw pumps, delivering 150 L/min flow with a maximum working pressure of 40 bar. Since 1978, SETTIMA has been one of Europe’s leading manufacturers of screw pumps and is DIN/ISO 9001 certified.
This three-screw pump consists of one driving screw and two driven screws housed within the pump body. The core advantage lies in the balancing piston on the driving screw, which eliminates axial loads through hydrodynamic unloading. The driven screws are hydraulically rotated by the fluid being pumped, eliminating mechanical wear. The pump is a fixed-displacement axial-flow rotary pump, where the mechanical balance between the three moving screws and the self-lubricating main bearings ensure low pressure pulsation, low noise, and long service life.
The pump is self-priming and can be installed in various spatial orientations. The “RF2V” designation indicates the inclusion of an adjustable safety valve (Regulated Safety Valve) with specific configuration.
Engineered as a direct OEM-replacement solution, the GR40 SMT16B-150L-S1 RF2V fully complies with SETTIMA original design standards and ISO 3019/2 mounting interface specifications, offering 100% direct interchangeability with OEM pumps. Every unit undergoes 100% workload simulation testing prior to shipment, rigorously validating pressure retention, flow rate, and internal leakage performance to meet or exceed OEM standards.
Model Code Breakdown (Bulleted List) :
GR — Series: SETTIMA GR Series Three-Screw Pump
40 — Frame size: GR40 (150L/min flow rating)
SMT — Series identifier: SMT Series Industrial Three-Screw Pump
16B — Pressure rating: Maximum working pressure 40 bar
150L — Flow code: Nominal flow 150 L/min
S1 — Configuration code: Shaft and mounting configuration
RF2V — Configuration code: With adjustable safety valve (Regulated Safety Valve) and specific configuration
Technical Specifications
Model: GR40 SMT16B-150L-S1 RF2V
Brand: SETTIMA (Italy)
Series: SMT16B Three-Screw Pump
Pump Type: Three-Screw Pump (fixed-displacement axial-flow rotary pump)
Frame Size: GR40
Maximum Working Pressure: 40 bar
Peak Pressure: 50 bar
Nominal Flow: 150 L/min
Noise Level: 52 – 63 dB(A)
Rotation Direction: Clockwise (viewed from pump shaft end)
Mounting Flange Standard: ISO 3019/2
Shaft Type: Hollow shaft (optional)
Housing Material: Aluminum alloy
Seal Material: NBR
Inlet Port Diameter: 40 mm
Outlet Port Diameter: 35 mm
Inlet Pressure: 1 bar
Circuit Type: Open circuit
Self-Priming: Yes
Key Technical Advantages
1. Three-Screw Hydrodynamic Balance Design – Zero Axial Load
The balancing piston on the driving screw eliminates axial loads through hydrodynamic unloading. The driven screws are hydraulically rotated by the fluid being pumped, eliminating mechanical wear. This design ensures long-term reliability under high-pressure conditions.
2. Ultra-Low Noise & Low Pulsation Operation
The mechanical balance between the three moving screws and the self-lubricating main bearings ensure extremely low pressure pulsation and low noise levels (52–63 dB(A)). Particularly suitable for industrial environments with strict noise and pressure stability requirements.
3. Compact Design – Space Saving
The SMT16B series features shorter screws compared to standard SMT pumps, making it more compact and suitable for applications with limited installation space.
4. Integrated Adjustable Safety Valve – High System Integration
The “RF2V” designation indicates the inclusion of an adjustable safety valve. System pressure protection is achieved without additional valve blocks, simplifying hydraulic system design.
5. Self-Priming Design – Flexible Installation
The pump is self-priming and can be installed in various spatial orientations. Both standard shaft and hollow shaft options are available.
6. 100% Factory Tested & Direct Interchangeability
Every unit undergoes 100% workload simulation testing prior to shipment, covering pressure retention verification, flow validation, and internal leakage detection. Fully compliant with SETTIMA original design standards and ISO 3019/2 mounting flange specifications, with flange dimensions, shaft specifications, and mounting interfaces identical to OEM pumps—direct drop-in replacement with zero modifications required.
Application Areas
The GR40 SMT16B-150L-S1 RF2V three-screw pump is widely used in the following equipment and systems:
Power Hydraulics: Presses, machine tools, working machines
Gearbox Lubrication Systems: Gearboxes, compressors
Bearing Lubrication Systems: Heavy-duty bearing circulation lubrication
Cooling Circulation Systems: Industrial equipment cooling
Truck Hydraulic Systems: Dump truck hydraulic systems
Test Bench Construction: Hydraulic test benches
Mining Machinery: Mining equipment hydraulic systems
Low-Pressure High-Flow Hydraulic Applications
Expert Maintenance Tips
1. Model Confirmation
The GR40 SMT16B-150L-S1 RF2V belongs to the GR40 frame size with 150L/min flow and 40 bar maximum pressure. The SMT16B series also includes GR20, GR25, GR32, GR40, GR45, GR55, GR60, GR70, GR80, GR90, GR110, and other frame sizes. Before installation, confirm the correct specifications based on system flow and pressure requirements, and verify the complete model code on the pump nameplate.
2. Rotation Direction Confirmation
The pump features clockwise rotation (viewed from the pump shaft end). Before installation, always verify that the drive shaft rotation direction matches the pump’s rotation direction—incorrect rotation will result in pump failure to prime.
3. Installation Precautions
Mounting flange standard: ISO 3019/2
Inlet port diameter 40 mm, outlet port diameter 35 mm
Maintain inlet pressure at 1 bar
Use SETTIMA-specified torque values for mounting bolts—avoid over-tightening which may cause housing distortion
The pump is self-priming and can be installed in various spatial orientations
4. First Start-Up and Bleeding
Before first start-up, must fill the pump with fluid through the inlet port—never start dry
After start-up, run at low speed with no load for 2–3 minutes to ensure complete air evacuation from the system
Check for abnormal noise or leakage
5. Fluid and Filtration
Viscosity range: Up to 100 cSt
Maintain operating temperature within recommended range
Regularly replace filters to prevent contaminants from entering the pump
6. Periodic Maintenance
Check mounting bolt torque every 1,000 operating hours
Regularly monitor system operating pressure—not to exceed 40 bar (50 bar peak)
Three-screw pumps are known for long service life and low maintenance requirements—nevertheless, regularly inspect mechanical seals to prevent leakage
If flow output decreases, noise levels increase abnormally, or system temperature rises excessively, inspect and replace worn components promptly
Note: This model is equipped with an adjustable safety valve (RF2V)—regularly verify the valve set pressure
