High Temperature Flow Switches

High Temperature Flow Switches

For process temperatures to 1,500° F

Peeco High Temperature flow switches are specially designed for use at elevated temperatures.  The standard flow switches are rated for 300°F.  We can achieve 400°F ratings with a simple micro-switch upgrade.  For temperatures over 400°F, the PEECO flow switch can be supplied with a variable lengths of convoluted stainless steel body extensions.  These “finned rings” stainless steel body extensions will protect the electrical contacts and permit rapid heat dissipation from process conditions.  The number of “finned rings” directly correlates to the maximum temperature rating required.  When used in conjunction with our high temperature micro-switch, this flow switch provides superior performance at temperatures other switches only dream about.  Available on explosion-proof, non-explosion proof and high pressure models.

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 10,000 psi. 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.

Explosion Proof Models Shown with Optional Heat Dissipation:
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 available. Conduit outlet: 1/2"NPT on all models; 3/4" and metric sizing available.
Non-Explosion Proof Models Shown with Optional Heat Dissipation:
Encompassing all the features and reliability of our more popular Explosion Proof models, 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.
High Pressure Models (10,000psi) Shown with Optional Heat Dissipation:
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 600psi. Each of the four basic styles shown are adaptable to many other fittings and configurations.