Flow Switches for Violent Flows
PEECO Hinged Connection with special paddle
| This design utilizes a hinge-pin which allows the paddle to move through a 90° travel, swinging up to a horizontal position. It is only effective for actuation at the lower end of the flow spectrum higher flows will disengage the bias spring. We do not recommend this unit for lines smaller than 6″ because the hinging configuration occupies the first 2″ of stem and paddle. For screwed mounting these units should be mounted only with a thread-o-let. For flanged mountings we recommend a minimum distance from the face of the mounting flange to the top I.D. of the pipe of 4-1/2″. This 4-1/2″ is standard; if necessary it can be increased to a maximum of 6″. |
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Available on our Series N Flow Switch – these units are furnished with a slip-on steel cover. This .062 thick housing is NEMA 4X weather proof, by utilizing a special “O” ring seal fitted into a mechanical groove in the body; a standard on all of the non-explosion proof models. The housing & cover are both made of heat treated aluminum T-356 and are epoxy coated (for extra protection). Each of the four basic styles shown are adaptable to many other fittings and configurations.
Available on our Series E Flow Switch – All explosion proof models are rugged, heavy duty units exceeding all UL Code requirements. Each of the four basic styles are adaptable to many other fittings and configurations. Utilizing 1/4″ thick Heat treated aluminum cover (shown at right) with 5 fully engaged threads, these units are designed to encapsulate any internal explosion. All explosion proof models meet Class 1, Group D requirements for use in hazardous locations; all NEMA classifications available. The housing & cover are both made of heat treated aluminum T-356 and are epoxy coated (for extra protection). Other classes and groups are available. Conduit outlet: 1/2″ NPT on all models; 3/4″ and metric sizing available.
Available on our Series H Flow Switch – Utilizing ¼” thick Heat Treated aluminum cover with 5 fully engaged threads, all units are designed to encapsulate any internal explosion. In lieu of a bellows assembly a solid rod extends through a flexure tube brazed or welded into a S.S. ball fixture. Unit has been successfully field tested up to 10,000psi. Wall thickness of the flexure tube will vary with pressure requirements. This model is recommended for all pressures over 600 psi. Each of the four basic styles shown are adaptable to many other fittings and configurations.
Related page – see Dash Pot option
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