Piston Fillers
Piston Fillers
Air Operated Single Head Bench Top Plastic Piston Filler
2 head machines avaliable
Prices start at $2,400.
Gallon bench top air operated piston filler. 7 ounce bench top air operated piston filler.
The NPS Plastic Piston Filler Advantages:
 |
Corrosion Resistant All Plastic Construction.
| Self-Priming.
| Pull product directly out of barrel, pail, tank, or kettle
| Repeat Accuracy - 0.5 percent.
| Long Cycle Life.
| Fail-Dry Vented Safety Design.
| Standard Limit Stop allows for adjustable filling volume adjustment.
| Remote sensing & position verification avaliable |
These pistons
are air-operated, self-priming, positive displacement type
pumps designed to meter precise quantities of liquids. The accuracy of the
discharge repeatability is approximately 1/2 of 1%. The four sizes of pumps
available have a single stroke maximum delivery capacity of 7, 10, 32 or 128
liquid ounces. Using the standard limit stop, the pump can be adjusted to
deliver smaller portions of its stated capacity.
Pump bodies, shaft and piston assemblies, and cylinder walls are constructed of Geonฎ brand TYPE 1, GRADE 1 PVC (Polyvinyl Chloride). Polypropylene, Kynarฎ PVDF and PTFE also available on request. Optional stainless steel cylinder walls are available when chemicals are compatible with 304 stainless steel.
A choice of two standard elastomer seals is offered: Buna-N (nitrile rubber) and FKM (fluorocarbon rubber). Optional PTFE cap seals are offered for applications where severe seal rubbing occurs.
Pump tie rods and their fasteners, adjusting bolts, locking nuts, as well as inlet and outlet check fasteners, are 303 stainless steel. Mounting brackets are zinc plated steel.
Labratory tests, pumping tap water, indicate the life expectancy of pistons with PVC cylinder walls to be between 100,000 and 300,000 cycles. Over 1,000,000 cycles is achieved in testing with the optional stainless steel cylinder walls.
To ensure the best cycle figures pumps must always be mounted vertically. When gritty liquids are being pumped it is recommended that the pumps be mounted with the liquid side down to allow sediment to settle without scoring the cylinder walls. The optional PTFE cap seals do not increase cycle life with PVC cylinders unless there is an unusual rubbing problem with the O-rings. There is a cycle life improvement with the PTFE cap seals in stainless cylinders.
The Neumann Packaging Plastic Piston Filling Machines are available with maximum per cycle capacities of 7 ounces, 10 ounces, 32 ounces and 128 ounces. A cycle is one up and down stroke of the piston assembly. They can be cycled up to 10 times per minute when pumping water or liquids of similar specific gravities and viscosities. The per cycle discharge capacity can be adjusted from its maximum to 20% of its maximum. For example: the 128 ounce piston can be adjusted to discharge anywhere between 25 and 128 ounces per stroke. While the piston discharge adjustment is simple, it is recommended that the discharge amount be physically measured. Once the measured amount is set and checked the accuracy of the discharge repeatability is approximately 1/2 of 1%.
The maximium liquid viscosity recommended (at 0.9 specific gravity @ 65ฐ F) is 85,000 SSU, which is equivalent to 17,000 centipoise or 19,000 centistokes. At these viscosity values the pumping time required to complete a cycle is as follows: 1 cycle/ minute with 25 psi air supply, 3.4 cycles/minute with 75 psi air, and 4.3 cycles/minute with 100 psi air. (Test media: honey, which is 17,000 centipoise at room temperature.)
A vented chamber separating two sealed sections of a valve or, as in this case, a pump. In the event of a liquid piston seal failure, the vented chamber and u-cup seals will cause the by-passing liquid to exit at the vent port. With the vent piped to a remote location, the pump will remain functioning even after a primary seal failure, thereby keeping the process or system operating until a maintenance can be scheduled avoiding costly emergency shutdown.
The chemical metering pumps are designed with 4 chambers, a liquid chamber, a vented chamber, and two air operating chambers. Movement within the chambers is controlled by the reciprocating action of a pump's shaft and piston assembly. The assembly is operated and controlled by a 4-way air valve (an accessory item) which alternately introduces and exhausts air pressure on both sides of the air piston. The 4-way valve would receive its on-off electrical signal from an independent electrical timer or similar device, not supplied with the pump. This action also causes the liquid piston to reciprocate.
On the down stroke of the liquid piston a vacuum is created in the liquid chamber which opens the inlet check valve diaphragm and holds the outlet check diaphragm closed. This operation permits the liquid chamber to fill itself (self priming).
On the up stroke the liquid in the chamber is pressurized by the piston movement. This opens the outlet check valve diaphragm and holds the inlet check valve diaphragm closed. This action discharges the liquid out of the pump into a system.
These are positive displacement pumps thus any re-adjustments to the adjusting bolt will result in a change in discharge quantity. By turning the bolt further into the lower air chamber the travel of the shaft and piston assembly is restricted creating a shorter discharge stroke and reduced discharge quantity.
Proximity sensors are available to verify position on all metering pump sizes. These can be used to power a relay, or signal a computer or other process control. Switches are ideal to verify that the pump has discharged or retracted, or both. 5-240 VAC or DC Switches feature Indicator Lights, NEMA 6 washdown compatible, thermoplastic (Ultem) housing, PVC wire and stainless steel fasteners. Universal clamp attaches to tie rods on pump cylinders.
Metering pumps should always be installed vertically (see Cycle Life section) with the pump inlet never more than 10 feet above the end of the suction line. Mounting brackets are supplied with all pumps. To eliminate siphoning through the pump, the end of the discharge line should always be higher than the liquid source. To obtain the longest cycle life, it is imperative that the operating air supply line be lubricated and filtered to eliminate foreign matter from entering and scoring the cylinder walls.
When properly installed and calibrated, should offer you the maximum in dependable operation. In this regard, special attention should be made to adhere to the installation and maintenance instructions shipped with each chemical metering pump.
 |
| PUMP DIMENSIONS | ||||
|---|---|---|---|---|
| Pump Code |
VPA7 | VPA10 | ||
| Inches | MM | Inches | MM | |
| "A" | 3-1/2" | 88.9 | 3-1/2" | 88.9 |
| "B" | 1-7/8" | 47.6 | 1-7/8" | 47.6 |
| "C" | 5-3/4" | 146.0 | 5-3/4" | 146.0 |
| "D" | 2-9/16" | 65.0 | 2-9/16" | 65.0 |
| "E" | 7-7/8" | 200.0 | 9-13/16" | 249.2 |
| "F" | 2-3/8" | 60.3 | 2-3/8" | 60.3 |
| "G" | 13-1/16" | 331.7 | 14-15/16" | 379.4 |
| "H" | 3-9/16" | 90.4 | 4-1/16" | 103.1 |
| "I" | 6-1/16" | 153.9 | 6-1/16" | 153.9 |
| "J" | 2-3/8" | 60.3 | 2-3/8" | 60.3 |
| "K" | 9-3/16" | 233.3 | 9-3/16" | 233.3 |
| "L" | 2-5/16" | 58.7 | 2-5/16" | 58.7 |
 |
| PUMP DIMENSIONS | ||||
|---|---|---|---|---|
| Pump Dimensions |
VPA32 | VPA128 | ||
| Inches | MM | Inches | MM | |
| "A" | 5-1/2" Dia. | 139.7 | 8-3/4" Sq. | 222.3 |
| "B" | 3-1/8" | 79.3 | 5-1/2" | 139.7 |
| "C" | 4-1/8" | 104.7 | 4-3/4" | 120.6 |
| "D" | 2-1/2" | 63.5 | 2-1/4" | 57.1 |
| "E" | 12" | 304.8 | 13-13/16" | 350.8 |
| "F" | 2-3/8" | 60.3 | 9-3/4" | 247.6 |
| "G" | 17" | 431.8 | 18-5/16" | 465.1 |
| "H" | 5-1/8" | 130.1 | 5-3/4" | 146.0 |
| "I" | 2-3/4" | 69.9 | 4-3/8" | 111.1 |
| "J" | 3-1/2" | 88.9 | 6" | 152.4 |
Movie of automatic piston filler images/Pistonfillerautomatic.wmv
Movie semi-automatic piston filler:
Microsoft images/piston2head.wmv
Quicktime images/piston thin 2 head 001.MOV
Product Description :The NPS PISTON FILLER is a highly
versatile, operator simplistic, and robust filling machine. This volumetric
piston filler draws liquids and other low viscosity products such as oils or
juices directly from a tank or drum, eliminating the need for a hopper. This
model can also be used as a metering pump to dispense a controlled volume.
Disassembly and cleaning in a matter of minutes and typically no tools are
required. This system is very accurate and repeatable.
The operator drops a line of flexible tubing into a drum or tank. Then the
volume of fill hand wheel is adjusted to the desired setting. The operator
places an empty container under the filling nozzle, presses the foot pedal and
the exact quantity is drawn from the drum and dispensed into the container. The
machine operates one fill at a time and shuts off until the foot pedal is again
pressed.
APPLICATIONS:
The NPS PISTON FILLING MACHINES are used in many liquid filling applications and
in numerous industries to include the cosmetic, pharmaceutical, personal care,
specialty chemical, and food manufacturing. These machines are HIGHLY VERSTATILE
and generally used to fill many free flowing liquid products that are uniform in
structure and composition throughout. Product cylinders are made to customers
product(s) and container specifications.
STANDARD FEATURES:
Stainless Steel Product Cylinder(s)
Drip Free Bottom Close Nozzle(s)
Foot Pedal
Stainless Steel Base
Stainless Steel (316L) and Food Grade Contact Parts
Fill Volume Adjustments
Product Suction and Dispensing Speed Adjustment
Sanitary Quick Disconnect Stainless Steel Connections
All Pneumatic Operation
PISTON FILLER OPTIONS:
A number of options are available to aid the operator in their production
requirements
Agitated Hoppers
Multiple Stroke Capabilities
Plunging Nozzle Assemblies
Stainless steel Pedestal with Casters
PLC Automatic Indexing Package
Liquid Level Controls and Resupply
All Electric Operation
Heated Product Package
Viscous Product, thick liquid, single and two head piston fillers
The NPS PISTON FILLER is a highly
versatile, operator simplistic, and robust filling machine. These PISTON FILLERS
handle water thin to highly viscous products and can be equipped to handle
products containing larger chunks or particles. This model features the highly
acclaimed and accurate 3-way valve mechanism with fittings for the hopper,
product cylinder and nozzle. Disassembly and cleaning in a matter of minutes and
typically no tools are required. This system is very accurate and repeatable.
APPLICATIONS:
The NPS PISTON FILLING MACHINES are used in many liquid filling applications and
in numerous industries to include the cosmetic, pharmaceutical, personal care,
specialty chemical, and food manufacturing. These machines are HIGHLY VERSTATILE
and generally used to fill liquid products ranging from water, thick cr่mes,
gels, and even high viscosity pastes. Product cylinders are made to your
product(s) specifications.
STANDARD FEATURES:
Stainless Steel Product Cylinder(s)
Drip Free Bottom Close Nozzle(s)
Foot Pedal
Stainless Steel Base
Stainless Steel (316L) and Food Grade Contact Parts
Fill Volume Adjustments
Product Suction and Dispensing Speed Adjustment
Sanitary Quick Disconnect Stainless Steel Connections
All Pneumatic Operation
PISTON FILLER OPTIONS:
A number of options are available to aid the operator in their production
requirements
Agitated Hoppers
Multiple Stroke Capabilities
Plunging Nozzle Assemblies
Stainless steel Pedestal with Casters
PLC Automatic Indexing Package
Liquid Level Controls and Resupply
All Electric Operation
Heated Product Package
NEUMANN PACKAGING SERVICES
1675 Pine Grove Drive, Asheboro,
North Carolina 27205
Phone: 336-683-9834 / Fax: 336-683-9833 / E-mail: neumannpack@triad.rr.com