---
product_id: 312444868
title: "Rocker Diaphragm Oilless Vacuum Pump Chemker 411 PTFE, Chemical Resistant, Includes Moisture Traps and Gauge, 10 mbar, 20 LPM, 1700 RPM, 110V"
brand: "sterlitech"
price: "418921 kr"
currency: ISK
in_stock: true
reviews_count: 1
category: "Sterlitech"
url: https://www.desertcart.is/products/312444868-rocker-diaphragm-oilless-vacuum-pump-chemker-411-ptfe-chemical-resistant
store_origin: IS
region: Iceland
---

# 20 LPM max flow rate 1700 RPM motor speed PTFE chemical-resistant diaphragm Rocker Diaphragm Oilless Vacuum Pump Chemker 411 PTFE, Chemical Resistant, Includes Moisture Traps and Gauge, 10 mbar, 20 LPM, 1700 RPM, 110V

**Brand:** sterlitech
**Price:** 418921 kr
**Availability:** ✅ In Stock

## Summary

> 🧪 Elevate your lab game with silent, chemical-proof vacuum power!

## Quick Answers

- **What is this?** Rocker Diaphragm Oilless Vacuum Pump Chemker 411 PTFE, Chemical Resistant, Includes Moisture Traps and Gauge, 10 mbar, 20 LPM, 1700 RPM, 110V by sterlitech
- **How much does it cost?** 418921 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/312444868-rocker-diaphragm-oilless-vacuum-pump-chemker-411-ptfe-chemical-resistant)

## Best For

- sterlitech enthusiasts

## Why This Product

- Trusted sterlitech brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Whisper-Quiet Operation:** Low vibration and noise levels keep your workspace calm and professional.
- • **Smart Thermal Protection:** Built-in auto shutoff prevents overheating, ensuring reliable, long-term performance.
- • **Corrosion-Proof PTFE Build:** Engineered to resist harsh chemicals and corrosive gases for unmatched durability.
- • **Oil-Free & Maintenance-Free:** Say goodbye to oil changes and pollution with a clean, oilless diaphragm design.
- • **Versatile Lab-Grade Performance:** Perfect for solvent purification, rotary evaporation, and vacuum filtration applications.

## Overview

The Rocker Diaphragm Oilless Vacuum Pump Chemker 411 features a PTFE diaphragm for superior chemical resistance, operates oil-free to eliminate contamination and maintenance, and delivers a robust 20 LPM flow at 1700 RPM. Its quiet, low-vibration design includes built-in thermal protection, making it ideal for demanding lab applications like solvent purification and rotary evaporation.

## Description

All wetted parts of Chemker series pump are made of PTFE material which can resist most of corrosive gases. Chemker series pumps are driven by diaphragm, without the need of lubricant, regular oil changes and maintenance; with no oil pollution. Driven directly by motor with no additional belt-driven transmission; the quality vibration-proof assembly makes Chemker series run at the lowest noise level among all other equivalent pumps. Every motor of Chemker series pumps has a built-in thermal protection device to shut off the pump automatically when overheated and then resume working when the temperature cools down. Applications include solvent purification with a gel dryer and rotary evaporator.

Review: Amazing - The greatest vacuum pump ever for DIY hobbyists. Be careful with acetone and other solvents that can destroy internal Viton rings.

## Features

- Corrosion proof, chemical resistant, oil free
- No air pollution, maintenance free
- Quiet and low vibration
- Built-in thermal protection device
- Applications: Solvent purification gel dryer, rotary evaporator, vacuum filtration
- International certification: CE certification
- Type: Diaphragm

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B087XB2LVV |
| Batteries Required? | No |
| Best Sellers Rank | #587,547 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #266 in Lab Vacuum Pumps |
| Brand | Sterlitech |
| Customer Reviews | 5.0 5.0 out of 5 stars (1) |
| Date First Available | April 30, 2020 |
| Item Weight | 19.8 pounds |
| Item model number | 169411-11 |
| Manufacturer | Rocker Scientific Co., Ltd. |
| Material | Plastic |
| Maximum Flow Rate | 20 Liters Per Minute |
| Part Number | 169411-11 |
| Style | 110V/60Hz |
| UPC | 655887500220 |
| Voltage | 110 Volts |

## Product Details

- **Brand:** Sterlitech
- **Item Weight:** 19.8 Pounds
- **Manufacturer:** Rocker Scientific Co., Ltd.
- **Material:** Plastic
- **Maximum Flow Rate:** 20 Liters Per Minute
- **Style:** 110V/60Hz
- **UPC:** 655887500220
- **Voltage:** 110 Volts

## Images

![Rocker Diaphragm Oilless Vacuum Pump Chemker 411 PTFE, Chemical Resistant, Includes Moisture Traps and Gauge, 10 mbar, 20 LPM, 1700 RPM, 110V - Image 1](https://m.media-amazon.com/images/I/61gokg9CfkL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Amazing
*by G***R on May 22, 2025*

The greatest vacuum pump ever for DIY hobbyists. Be careful with acetone and other solvents that can destroy internal Viton rings.

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**Shop now:** [https://www.desertcart.is/products/312444868-rocker-diaphragm-oilless-vacuum-pump-chemker-411-ptfe-chemical-resistant](https://www.desertcart.is/products/312444868-rocker-diaphragm-oilless-vacuum-pump-chemker-411-ptfe-chemical-resistant)

---

*Product available on Desertcart Iceland*
*Store origin: IS*
*Last updated: 2026-02-13*