Product Overview
Dual Head Peristaltic Ink Pump, Models PQS & PQL
Two peristaltic pump heads powered by a single motor allow the pump’s heads to be individually set to supply or return. This ability, coupled with the pump’s variable speed capability and ability to reverse direction for several pumping configurations.
- Supply one ink to two separate decks.
- Supply two separate inks to two separate decks.
- Supply and return one ink to one deck.
WHY USE PERISTALTIC PUMPS?
In the last decade, peristaltic pumps have evolved from a novelty to an integral part of many pressrooms. They have been especially popular for two segments: heavy viscosities and short runs.
Peristaltic pumps are a natural choice for heavy viscosities. Their low-shear rolling action can pump inks, coatings, and adhesives that are too thick for centrifugal pumps without the sharp pulsations associated with double diaphragm pumps. And with the ability to control the pump’s speed, you can deliver only as much as you need.
Peristaltic pumps are great for short runs and quick turnarounds. Since the ink is contained within a tube, cleaning the pump consists solely of replacing the tube. That’s it; there are no internal crevices and hiding places that the ink can contaminate the next job. This is especially crucial for hard-to-clean UV inks. Add the “Quick Change” head feature for even faster turnarounds.
WHY GRAYMILLS?
Unlike competitive models from the chemical and food industries, Graymills’ peristaltic pumps were designed specifically for the pressroom. Our “Straight-Thru” head design keeps tube destroying kinks from forming. And by using two rollers in an oversized head with thick-walled tube, the tubing life - and the chance of tube failure - is minimized.
Our peristaltic pumps are also designed with press turnaround in mind. This shows in features like reversing. Conventional pumps run one direction and can’t pull the ink back into the bucket. Graymills is leading the way with its Quick-Change heads that allow almost instant changeovers to reduce ink waste and system clean-up time. Why use a design optimized for a different industry when there is a pressroom proven peristaltic from Graymills?
UNIQUE GRAYMILLS PERISTALTIC PUMP FEATURES
- QUICK TUBE CHANGE - Swivel lock fasteners permit quick cover removal with no tools or loose parts – for fast turn arounds.
- STRAIGHT-THRU™ DESIGN - Graymills’ Patented Head Design allows the tube to run direct from the ink container to the print deck – eliminates tube-destroying kinks, flow stoppages, the snaking or tube creep common in other peristaltic pump designs.
- DUAL ROLLER TECHNOLOGY - Twin rollers made from nylon impregnated with a high-tech lubricant deliver full flow with fewer compressions and less tube wear. Aluminum head has stainless steel rollers.
MODEL PPS TYPICAL APPLICATIONS
For narrow web flexo and rotary screen applications and light to heavy viscosity inks, coatings and adhesives (including UV/EB) requiring flow rates of 1.5 GPM or less. If flow requirements are above 1 GPM, consider model PPL for slower running speed and longer tube life
MODEL PPL TYPICAL APPLICATIONS
For mid to wide web flexo, gravure and rotary screen applications and light to heavy viscosity inks, coatings and adhesives (including UV/EB), requiring flow rates of 4.5 GPM or less.
STANDARD FEATURES:
- Includes all peristaltic quality features listed on page 11. Variable speed for flow control.
- Reversible for easy draining and flushing.
- Straight-Thru patented head design eliminates flow stoppage from tube kinks.
- Recommended maximum viscosity 500 cps.
OPTIONAL FEATURES & ACCESSORIES
- Quick Change Removable Heads. Dual heads.
- Stand to mount pump over ink tank.
- Mounting bracket for direct attachment to press.
- Mixer to keep contents blended. Remote mounting of controls. CE compliant.
- Contact Factory for information on ATEX compliant models.
SO UNIQUE IT IS PATENTED - Graymills holds U.S. patent 5,630,711.
TANK OPTIONS
- 1, 2, 5, gal pails (accessory pump stand or mounting bracket recommended).
- 10, 20, 30 gallon mild steel tanks. Stainless steel optional.
