Dry Screw

The reliable dry screw vacuum alternative for heat treatment and metallurgy

The Stokes 212DRY-414DRY dry screw vacuum pumps offer the familiar reliable operation and performance, just as Stokes 212J and 412J pumps you have grown to rely on. With the Stokes DRY series you can improve your process operations, increase uptime and reduce maintenance at a minimal cost.

Direct mount motor options
Compact design and low footprint
Simple thermal protection
Wide range of standard accessories available
Low power consumption
Simple, robust seal purge system
Simple plug and play field retrofit kits for existing installations
Simple direct mount alternative also available

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PRODUCT DETAILS

Features

Improved Working Enviornment
Simple Thermal Protection
Lower Maintenance and Oil Costs
Reduced Furnance Downtime
Ease of Replacement

Improved Working Enviornment

Increased process yield with optimal repeatable pumping performance and no vacuum performance degradation.

Simple Thermal Protection

By preventing overheating, the thermal protection keeps your pump from reaching dangerous temperatures and preventing potential damage. Maintaining a consistent and uniform temperature extends the life of your pump, reduces wear and tear, and minimizes the need for frequent repairs.

Lower Maintenance and Oil Costs

You save on recurring costs for the oil mist filer and element. Reduce your dependency and costs of maintenance engineers.

Reduced Furnance Downtime

The Stokes DRY pumps require only a yearly oil change intervention, significantly increasing the runtime for your furnace.

Ease of Replacement

We offer retrofit kits to integrate easily into your existing Stokes installation, designed to improve your process and facilitate a stress-free transition to dry technology at a minimal cost.

Download our Brochure

Stokes 212DRY-412DRY Brochure

Filename: Document-Stokes-vacuum-212-412DRYDryScrew-Overview-2025.pdf
Size: 1 MB
Format: pdf

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Applications

Metallurgy
Heat Treatment
Automotive
PET Processing
Pharmaceuticals
General Applications

Product Specifications

	Units	212DRY	412DRY
Peak pumping speed	cfm	>165	>271
Ultimate Pressure	torr	<0.007	0.007
@ ultimate pressure	hp	6	6
@ peak pumping load	hp	11	15
Inlet connection		ISO63
Exhaust connection		NW40	ISO 63
Connection		G1/4” female thread
Flow	Gal/min^-1	<1.05	<2.1
Supply pressure (max)	psig	100
DP across pump (min)	psig	2.9
Temperature	°F	41-95
Primary cooling circuit volume (Glycol water mixture volume in case of variant with indirect cooling)	gal	1.6	NA
Connection		G1/4” female threads
Pressure	psig	58-145
SSP flow	lmin^-1	<12
Gas ballast flow*	lmin^-1	0-50
Noise	dB(A)	<71
Operating temperature	°F	41-104
Exhaust back pressure (max)**	psia	17.4
System IP rating		IP54
Lubrication (as supplied)		Extend 110