Sanitary Stainless Steel Rotary Lobe Pump for High Viscosity Peanut Butter Transfer
Peanut butter isn't a liquid. It's a suspension — and it only holds together as long as you let it.
Roasted peanut solids. Peanut oil. A little sugar, a little salt. That's the whole formula. There is no emulsifier to fall back on, and no structure you can rebuild once it's broken. Which is why moving peanut butter is not a pumping problem. It's a preservation problem.
Bonve sanitary rotary lobe pumps are built for exactly that: one continuous, low-speed, large-volume transfer that carries peanut butter from the grinder to the filler without crushing it, without whipping air into it, and without heating it up along the way. Creamy stays creamy. Chunky keeps its pieces. And the oil stays where it belongs.
Nothing goes wrong in the pump. It goes wrong in the jar — three weeks later.
Every peanut butter producer knows the four failure modes. None of them look like pump problems. All of them usually are.
01 — The oil on top
Every jar of natural peanut butter tells the same story. A pool of oil on day one. A hard, dry block at the bottom by week six.
It gets blamed on the recipe. More often it starts at the transfer pump. High shear breaks the oil–solid emulsion, and a fast impeller — or a pump that starves at the suction — whips oxygen into the paste. The emulsion never fully recovers. The oil leaves. The solids pack down.
02 — Chunky that isn't
"Chunky" is a promise printed on the label, and a texture you cannot put back. A centrifugal pump, an over-speed lobe pump, one tight elbow: any of them will turn whole peanut pieces into paste before the jar is capped.
Once the pieces are gone, you're selling creamy with a chunky price tag.
03 — The pump that starves
Peanut butter is thick enough to stand a spoon up in. It's adhesive, it's heavy, and it moves into a suction port slowly. Centrifugal pumps cavitate. High-speed pumps lose prime. Flow drops, the line surges, the filler starves — and someone ends up at the hopper with a heat gun, trying to make the product behave.
04 — The swab that fails
Peanut is one of the most tightly regulated allergens in the world. Dead zones, rough crevices, and hard-to-reach seal areas hold protein residue you can't see and can't prove gone.
If you can't confirm the clean by eye, you can't defend the swab. And a failed allergen swab is not a rework issue. It's a recall issue.
One more thing.
Filling is where peanut butter quietly gets expensive. Thick product plus uneven flow equals uneven jar weights — overfills you give away, underfills you rework, and giveaway that eats the margin on every pallet, every shift, every month.
Why Choose Bonve for Peanut Butter Transfer
It moves the product. It doesn't work the product.
Four design decisions. Four things they do for the jar on the shelf.
Low shear by design, not by tuning. Two large-volume rotors turn slowly inside a sealed chamber. Product is carried in the gap between rotor and casing — not smashed against an impeller, not ground through a screw. Whole peanut pieces reach the filler as whole peanut pieces. The natural oil–solid emulsion goes in intact, so it stays intact in storage.
Thick is the easy part. Peanut butter is what a positive displacement pump was invented for. Every revolution displaces a fixed volume, so flow stays constant whether the paste is cold and stiff or warm and loose. Strong self-priming pulls product out of the hopper instead of waiting for it to arrive. Optional heating jackets hold viscosity steady through cold rooms and winter lines — without cooking the roasted flavor out of the product.
No air. That's the point. Oxygen is what turns roasted peanut flavor into "stale." A sealed chamber and full-volume suction leave no vortex, no whirlpool, no entrained bubbles — so there's no foam in the filler hopper, and no accelerated oxidation in the jar.
Clean enough to prove. Zero-dead-space chamber. Fully polished SS316L contact surfaces. FDA-compliant materials. Mechanical seal selected for your specific product. CIP and SIP capable, with a quick-open pump cover — so the chamber gets inspected and confirmed clean by eye, not by hope.
And a line that keeps running. Rotors never touch each other, and never touch the casing. Few wearing parts. Maintenance in place. Built for 24/7 duty, because peak season is when you find out what your pump is made of.
Bonve has an advantage over lobe pump that no other company can match.
1.Rotor:The error of the rotors processed by CNC is extremely small. The unique rotor perfectly seals the inlet and outlet of the pump. The vacuum degree of the pump is up to -0.095MPA. The rotor material and type can be selected according to the characteristics of the pumped product.
2.Shaft: The transmission shaft is processed by CNC machining center, which has characteristics of high precision, high bending strength and strong wear resistance.
3.Pump cavity: The pump cavity is sealed by a pump cover that can be opened quickly, enabling quick maintenance of the pump. The pump body is processed by CNC machining.
4.Gears:High-precision, High-Standard synchronous gears have good meshing, smooth transmission, low noise, and excellent bearing capacity.
5.Mechanical seal:The seal material and type are selected according to the characteristices of the pumped product, to ensure zero leakage, no pollution, and more environmental production.
6.Bearings: Six bearings arranged in a separate arrangement increase the concentricity of the pump operation, enhance the bearing capacity of the shaft and make the pump running more stable, thereby increasing the service life of the shaft and the mechanical seal.
7.Gear box: The gear box is processed by CNC, with high precision, high concentricity and strong versatility.
8.Spindle:We use splines the bearings and spindle, makes the pump less likely to slip. The high-precision spline makes the pump run more smoothly, and the service life is much higher than that of its peers.
More applications
Built for peanut butter. At home in the whole nut-butter family. Creamy and chunky peanut butter, natural and stabilized, almond butter, cashew butter, hazelnut butter, sunflower and seed butters, chocolate–hazelnut spread, sesame tahini, nut pastes and bakery fillings.
Bonve stainless steel lobe pumps are also widely used in food, dairy, confectionery, beverage and wine production. Typical transfer media include condensed milk, cheese, mayonnaise, yogurt, honey, syrup, sucrose, ketchup, tomato paste, butter, concentrated juice, jam, ice cream, yeast slurry, meat paste, jelly, condiments, soy protein, beverages and wine.
Working Principle
Bonve lobe pumps basically consist of two lobe rotors, which rotate synchronously driven by a pair of synchronous gears in the gearbox. The rotors are driven by the main shaft and sub-shaft to rotate in a synchronous reverse direction, which changes the pump capacity, builds up high vacuum and discharge pressure, thus an efficient pumping is formed. Gap is kept between the rotors and between the pump casing, no friction, long life, no damage, no physical and chemical reaction to the pumped products.
Bi-wing rotor diagram
Tri-lobe rotors diagram
Main Parts of the Complete Pump
Bonve complete pumps are usually composed of bare shaft pump, coupling and its guard, geared motor and baseplae. With your order, bare shaft pump or complete pump is supplied.
Bare Shaft Pump Structure
Based on the port direction, we have the pump with horizontal port and vertical port to meet your site installation.
Structure Details
Complete Pump Types
Technical Parameters
|
Model |
Displace -ment |
RPM |
Flow |
Dis. Pre. |
Power |
Vacuum |
Port size |
Max viscosity |
|
|
(L/r) |
(r/min) |
(m³/h) |
(Mpa) |
(kW) |
(Mpa) |
(mm) |
(cp) |
|
25BV12-05 |
0.06 |
10-1000 |
0-0.5 |
0-1.2 |
0.37-1.1 |
-0.080 |
25 |
1,500,000 |
|
40BV12-2 |
0.15 |
10-1000 |
0-2 |
0-1.2 |
0.75-2.2 |
-0.080 |
40 |
1,500,000 |
|
50BV12-5 |
0.32 |
10-800 |
0-5 |
0-1.2 |
1.5-4 |
-0.085 |
50 |
1,500,000 |
|
65BV12-10 |
0.65 |
10-600 |
0-10 |
0-1.2 |
2.2-7.5 |
-0.085 |
65 |
1,500,000 |
|
80BV12-20 |
1.74 |
10-500 |
0-20 |
0-1.2 |
4-15 |
-0.095 |
80 |
1,500,000 |
|
90BV12-30 |
2.60 |
10-500 |
0-30 |
0-1.2 |
5.5-22 |
-0.095 |
100 |
1,500,000 |
|
100BV12-40 |
3.65 |
10-500 |
0-40 |
0-1.2 |
7.5-30 |
-0.095 |
100 |
1,500,000 |
|
125BV12-50 |
4.60 |
10-500 |
0-50 |
0-1.2 |
7.5-37 |
-0.095 |
125 |
1,500,000 |
|
140BV12-70 |
6.10 |
10-500 |
0-70 |
0-1.2 |
11-45 |
-0.095 |
150 |
1,500,000 |
|
150BV12-80 |
7.63 |
10-500 |
0-80 |
0-1.2 |
11-55 |
-0.095 |
150 |
1,500,000 |
|
200BV12-120 |
11.56 |
10-400 |
0-120 |
0-1.2 |
15-75 |
-0.095 |
200 |
1,500,000 |
|
250BV12-150 |
14.22 |
10-400 |
0-150 |
0-1.2 |
18.5-90 |
-0.095 |
250 |
1,500,000 |
|
300BV12-200 |
20.80 |
10-300 |
0-200 |
0-1.2 |
22-110 |
-0.095 |
300 |
1,500,000 |
|
350BV12-300 |
32.60 |
10-250 |
0-300 |
0-1.2 |
45-160 |
-0.095 |
350 |
1,500,000 |
|
400BV12-400 |
50.40 |
10-250 |
0-400 |
0-1.2 |
55-200 |
-0.095 |
400 |
1,500,000 |
Note:
1. Tested medium: water.
2. Speed, flow rate, electrical power and pressure will be varified according to different product properties.
Selection Guidelines
|
Your Industry |
|
||
|
About pump medium |
Name: |
||
|
Density (g/m³): |
|||
|
Viscosity (mPa.s): |
|||
|
Temperature (℃): |
|||
|
PH value: |
|||
|
Solid content (%): |
|||
|
Solid size (mm): |
|||
|
Suction side |
Pressure: Positive ( ) bar; Negtive ( ) bar |
How high (m): |
|
|
Suction pipe length (m): |
Diameter (mm): |
||
|
Bends (Pcs): |
T-piece (Pcs): |
Valves (Pcs): |
|
|
Discharge side |
Pressure (Mpa): |
||
|
Vertical delivery pipe length (m): Total delivery pipe length (m): |
Diameter (mm): |
||
|
Bends (Pcs): |
T-piece (Pcs): |
Valves (Pcs): |
|
|
Required flow rate (L/H) |
Operating flow: |
Max. flow: |
|
|
Pump material required |
SS304 ( ) SS316 ( ) SS316L ( ) Duplex stainless steel ( ) |
||
|
Motor required |
Phase: Single ( ) Three ( ) |
Voltage (V): |
Frequency (Hz): |
|
IP grade: |
Energy efficiency: |
Anti-explosive: |
|
|
Installation type |
Fixed ( ) |
Movable ( ) |
Fixed with adjusting feet ( ) |
|
Others |
|
||
8 steps for your guideline to select Bonve pump
1. Your product name
2. Product viscosity in pump, line and at rest
3. Are there any solids present, if so what are they and percentage concentration
4. Specific gravity
5. Capacity required
6. Pumping temperature
7. Discharge pressure or sketch of pipework system
8. Suction pressure or sketch of pipework system
About us
BONVE is a Chinese leading manufacturer in ROTARY LOBE PUMPS and HOMOGENIZER MIXERS. Providing its customers with customized pumping and mixing solutions and solving their problems during the production.
Bonve pumps and mixers are widely used in food, dairy, beverages, chemical, pulp&paper, soaps&detergents, pharmaceuticals, pesticide, coatings etc. By 2024, Bonve served 8,000+ customers in various industries and 100,000+ pumps running in the worldwide.
Time and again companies specify Bonve pumps as the "standard" equipment for their manufacturing processed. We are looking forward to be partner with you.
Certificate
Bonve ISO9001, ISO14001, ISO45001 certificates ensure quality consistency, compliance reliability, environmental responsibility, and operational efficiency, delivering trustworthy and sustainable partnerships for our clients.
With CE and FDA certificates,Bonve pumps are globally recognized. These certificates open doors to major markets, and they're a testament to our pumps excellence for you.
How customers' comments on Bonve Lobe pump
Comment on the pumps surface finish
We worked with are-seller in food industry and they are very happy withBonve lobe pump surface smooth finish and price.
If your team is dealing with similar pain points—whether it's subpar materials, inconsistent finishes, or non-compliant equipment—let's connect. We're here to deliver the same peace of mind and performance to your operations.
Feedback on Bonve lobe pump inner structure and running
We worked withthecompanies in chemical industry and they are satisfied with our pump silent and smooth running. If you want to get rid of such usage troubles of yourexisting pumps, we are ready to provide you with the same high-value solution.
FAQ
1. Warranty Policy
Standard: 15 months from manufacturing date.
Service: Free replacement parts within 3 workdays for non-human quality issues.
Extended warranty: Available upon request (e.g., for projects).
2. Operation Guidance
Provided with full English manual (installation, operation) and training files (maintenance, troubleshooting).
Remote technical support available if needed.
3. Shipping Arrangement
Partner with reliable forwarders; support sea (standard) or air freight.
Share your nearest port/airport for CIF quotes (cost + insurance + freight).
4. Payment Terms
TT (Telegraphic Transfer) or LC (Letter of Credit).
5. Delivery Time
Bare shaft pumps: 7 workdays (standard).
Complete pumps with motor: 20 workdays (standard).
6. Packaging
Solid fumigation-free plywood cases.
7. Pre-Order Spec Confirmation
We send a spec form (flow rate, head, etc.) for confirmation; technical drawings/photos available if needed.
8. Post-Warranty Support
Paid parts (preferential prices, 3-5 workdays delivery).
Paid on-site/remote technical help; customized annual maintenance plans for long-term clients.
9. Custom Solutions
Supported: Adjust material (stainless steel/cast iron), parameters (flow rate/head), or design (vertical/mobile).
Lead time: 20-30 workdays (varies by complexity); progress updates provided.
Contact Us
We welcome you to contact us for a Peanut Butter Transfer Pump solution.
Contact person: Anna Chang
Tel: +86-574-87769810 Fax: +86-574-62962898
Mobile/Whatsapp/Wechat: 0086-13375846933
Email：bvsales1@bonvepumps.com
