Find the supplies you're looking for fast and efficiently by using the search box below.
Do not make orders from our website, if orders are needed, please call us at 918-251-0353 or visit us at robinsonmfgcoinc.com.

Robinson Manufacturing Co., Inc. is pleased to announce our acquisition of the Refinery Supply Co. beginning July 1st, 2026.

Refinery Supply Co. has been a premier manufacturer of dead weight gauges and testers as well as many other testing instruments for the oil and gas industries for over 100 years.

Robinson Manufacturing Co., Inc. has been setting the standard for oil centrifuges and petroleum products since 1954. Family owned and operated, we take pride in our quality and customer service. Our products are hand-made in the USA with industrial grade materials and components following ASTM and API testing standards.

You can contact customer service at 918-251-0353 or via e-mail at joey@robinsonmfgcoinc.com or rodney@robinsonmfgcoinc.com. While your point of contact will change the manufacturing processes will remain the same.

We value your business and look forward to continuing our business relationship.

If you have any questions, please reach out to me at william@robinsonmfgcoinc.com.

Regards,
Rico A. Tejeda
President

820A4 Centrifuge, 12VDC, Electrically Heated, 4- Place Head, 100ml Short-Cone Tube, 4- place Pre-Heater Section Flip Lid
Click images for larger versions.
  • /media/19580/19580__2.jpg820A4 Centrifuge, 12VDC, Electrically Heated, 4- Place Head, 100ml Short-Cone Tube, 4- place Pre-Heater Section Flip Lid
Item# 820A4

820A4 Centrifuge, 12VDC, Electrically Heated, 4- Place Head, 100ml Short-Cone Tube, 4- place Pre-Heater Section Flip Lid

Price

$0.00 / each

Product Description

*** CALL ROBINSON MFG FOR PRICING 918-251-0353 ***
* 12VDC
* Electrically Heated
* 100mL Short Cone Tube
* 4-Place Head
* 4-Place Pre-Heater
* Flip-style Lid
* Glass centrifuge tubes sold separately
* Robinson Model 820A4
* Meets API 10.4 testing standards
* Solid-cast aluminum housing provides strength and durability
* Variable speed, smooth-start rheostat controller reduces tube breakage
* Built-in sample heater adds convenience and saves space
* High-efficiency sample heater pockets heat samples to 140°F in just minutes
* Thermostatically controlled bowl heaters maintain sample temperatures during testing
* Modular design allows motor, sample heater pockets, & front panel controls to be easily removed &
replaced without removing the centrifuge from its mountings
* Lid access hole allows the operator to check centrifuge RPMs with a handheld tachometer
* Circular bowl design and ball bearing motor shaft support improve efficiency and extend motor life
* IP 68 rated heater switches protect against dust and moisture to extend switch life
* Three circuit design allows components to run independently, reducing overall power consumption during operation
* Length: 21.75"
* Width: 20"
* Height: 11.50"
* Weight: 78lb

Details

Designed for determining sediment and water (S&W) content of crude oil according to API 10.4 testing standards, the Robinson 820A4 Heated Centrifuge provides maximum accuracy, efficiency, and dependability for Crude Oil Haulers. Intended to operate from a vehicle's 12-volt system, all models are electrically heated and thermostatically controlled to hold samples at required testing temperatures. The solid-cast aluminum housing is corrosion-resistant and durable enough to hold up against tough use and job site conditions. The space-saving design incorporates a built-in sample heater for simplicity and convenience. A smooth-start variable speed rheostat controller reduces jerking and tube breakage on every startup and gives the operator precise motor control.

Related Products (2)