BS-B Dual-Line Grease Pump — High-Pressure Central Station
The BS-B (BSB / ZPU) dual-line grease pump is an electric central lubrication station for plants that need reliable grease delivery over long main lines and many points. The pump pressurizes Line A, then—via a reversing valve—pressurizes Line B while Line A vents, completing one full lubrication cycle for dual-line metering blocks.
Working pressure: up to 40 MPa (400 bar) adjustable with dual overload protection. Discharge options: approximately 120 ml/min, 235 ml/min, or 365 ml/min pump element sizes. Reservoir: 30 kg, 60 kg, or 100 kg steel tank with auto low-level alarm (ultrasonic level sensor optional). Motor: 380 V gear-reducer package (0.37–1.5 kW class per duty table).
Used with DR45 reversing valve, SA-V reverse valve, and dual-line blocks on this page (ZVB, VSG, VSL). Hub: grease pump · dual-line systems · heavy equipment.
- Main Characteristics
- Dual-line System Test Video
BS-B System Role
- Dual-line architecture — alternates pressure between two main headers; metering blocks discharge on each half-cycle
- High pressure — up to 40 MPa for long pipe runs and NLGI #2 in cold plants
- Central station — one skid serves many zones vs multiple small progressive pumps
- Controller options — PLC interface, pressure gauges, overload and level alarms
- Mobile variant — cart-mounted BSB-P (DRBZ-P) with hose reel and gun for field service
Typical Parameter Matrix
| Max pressure | Discharge (ml/rev class) | Reservoir | Motor kW | Voltage | Temp °C | Weight kg (approx.) |
|---|---|---|---|---|---|---|
| 40 MPa | 120 | 30 kg | 0.37 | 380 V | 0–80 / -20–80 | 56–64 |
| 40 MPa | 235 | 30 / 60 kg | 0.37–1.5 | 380 V | 0–80 | 60–74 |
| 40 MPa | 365 | 60 / 100 kg | 1.5 | 380 V | 0–80 | 74–82 |
Confirm exact motor, weight, and discharge on quotation BOM. Dual-line System Test Video: keep embed.
BS-B vs Progressive Pump Station
BS-B dual-line: blocked point on one branch does not stop entire machine zone if architecture is zoned correctly. Progressive (FS + DJF1000): one stalled piston stops the chain—simpler for mobile OEM. BS-B targets steel, cement, mining, long conveyor plants already designed for dual-line headers.
BS-B Pump Head & Instrumentation
Industrial motor, high-quality pressure gauge, and adjustable relief/overload—field technicians can confirm line pressure during commissioning.
Small Tank High-Pressure Pumps (8 / 15 / 30 kg)
IsoHiTech also supplies compact 8 kg, 15 kg, 30 kg high-pressure grease pumps for auxiliary zones—not full BS-B station replacement.
BSB-P Grease Pump With Cart
Cart-mounted package with hose reel and gun for progressive or dual-line supplemental service; level switch and safety valve in tank. Ideal when mobility matters more than continuous dual-line cycling.
Progressive vs Dual-Line on Same Pump Family
BS-B is engineered for dual-line headers. Progressive distributor skids use different control logic (manifold blocks, DJF1000)—specify architecture on inquiry to avoid mismatched valves.
Related Product
Dual-Line Cycle with BS-B Pump
- Pump builds pressure on Line A; grease moves through dual-line metering blocks on A-side half-cycle.
- Reversing valve (DR45 or SA-V) switches supply to Line B; A line vents to reservoir or return.
- Blocks meter grease to points on B-side half-cycle.
- Controller counts reversals and compares to set interval; faults on pressure or cycle timeout.
Size pump displacement so both lines receive adequate flow during switch-over—undersized pumps extend cycle time and starve distant blocks.
Reservoir & Level Monitoring
30 / 60 / 100 kg tanks match consumption of large plants. Ultrasonic or float level switch stops dry running—critical at 40 MPa where cavitation damages pump elements quickly. Refill with clean NLGI #2 through filtered fill port; consider inline grease filter on transfer line from barrel pump.
BSB-P Cart Package
Mobile BSB-P (DRBZ-P) adds cart, hose reel, and grease gun—used for supplemental greasing on plants with lower point count but heavy single-shot demand (see Section 2). Not a replacement for full dual-line headers on main production lines.
Compatible Metering & Valves
| Component | Role |
|---|---|
| DR45 | Reversing / change-over, adjustable relief |
| SA-V | Alternate reversing valve family |
| ZVB | 40 MPa dual-line metering |
| VSG / VSL | High-pressure dual-line blocks |
| DW | 20 MPa dual-line (lower pressure class) |
When Not to Use BS-B
- Small mobile machine needing DC 12/24 V progressive → FS or SK-505
- Single-line PDI oil only → single-line system
- No reversing valve or dual headers in plant design—do not force dual-line hardware
Before you buy: read our complete guide to grease pumps.
Three common classes: 120 ml/min, 235 ml/min, and 365 ml/min—matched to reservoir size and zone count.
30 kg, 60 kg, and 100 kg steel tanks; confirm dimensions and mount on drawing.
Standard auto low-level alarm; optional ultrasonic level sensor for PLC.
Up to 40 MPa (400 bar) with adjustable overload protection—size hose and blocks to same class.
380 V three-phase motor-reducer package typical; confirm Hz and kW on BOM.
Yes—BSB-P (DRBZ-P) with cart, hose, and gun for mobile greasing (Section 2).