TJERNLUND AUTO-DRAFT® Inducers assure positive draft when restricted boilers and furnaces, poor chimneys or slight negative pressures in buildings prevent proper exhaust of combustion gas. The venturi action of Tjernlund Auto-Draft Inducers starts air moving smoothly. These units are quick and easy to install and completely automatic in operation. Tjernlund’s unique design and durable construction makes them trouble-free and reduces maintenance to a minimum. The Vari-Draft Control permits adjustments to the individual job requirement.
Hydro Separator available in 1"-2" NPT & Sweat Unions. MAX operating pressure: 150 psi. Temperature range with insulation: 32-210 F without insulation: 32-250 F. Medium: Water & Non-Hazardous Glycol solution. MAX percentage glycol: 50%.
Series 548 Hydro Separator.
This device consists of several different functional components, each meet specific
requirements, typical of the circuits used in heating and air-conditioning systems.
• Hydronic separator: To keep connected hydronic circuits totally independent from each other
• Dirt remover: To permit the separation and collection of any impurities present in the circuits. Provided
with a valved connection with discharge piping.
• Automatic air vent valve: For automatic venting of any air contained in the circuits. Provided with a valved connection
for maintenance purposes.
The hydronic separator should be sized according to the maximum flow rate value at the inlet. The selected design value must be the greatest between the primary circuit and the secondary circuit. When a single system contains a primary production circuit, with its own pump, and a secondary user circuit, with one or more distribution pumps, operating conditions may arise in the system whereby the pumps interact, creating abnormal variations in circuit flow rates and pressures. The hydronic separator creates a zone with a low pressure loss, which enables the primary and secondary circuits connected to it to be hydraulically independent of each other; the flow in one circuit does not create a flow in the other if the pressure loss in the common section is negligible. In this case, the flow rate in the respective circuits depends exclusively on the flow rate characteristics of the pumps, preventing reciprocal influence caused by connection in series. Therefore, using a device with these characteristics means that the flow in the secondary circuit only circulates when the relevant pump is on, permitting the system to meet the specific load requirements at that time. When the secondary pump is off, there is no circulation in the secondary circuit; the whole flow rate produced by the primary pump is by-passed through the separator. With the hydronic separator, it is thus possible to have a primary production circuit with a constant flow rate and a secondary distribution circuit with a variable flow rate; these operating conditions are typical of modern heating and cooling systems.
Universal Flow Switch for heating systems. 1" NPTM, Brass body, Suitable for 1" to 8" pipe. UL listed.
Universal Flow Switch for heating and air conditioning systems. Suitable for 1" to 8" pipe size. Working pressure: 150 psi. Working Temperature: 250 F. Minimum Flow: 5.7 GPM. Rating of switch contacts : 5A. CE, cUL, NEMA Type 5, IP 54
TJERNLUND AUTO-DRAFT® Inducers assure positive draft when restricted boilers and furnaces, poor chimneys or slight negative pressures in buildings prevent proper exhaust of combustion gas. The venturi action of Tjernlund Auto-Draft Inducers starts air moving smoothly. These units are quick and easy to install and completely automatic in operation. Tjernlund’s unique design and durable construction makes them trouble-free and reduces maintenance to a minimum. The Vari-Draft Control permits adjustments to the individual job requirement.
Dirt Separator.
Brass Body.
1/2" NPT Top Thread With Plug For Optional Air Vent, Code 502243A
Max. Working Pressure: 150 PSI.
Working Temperature Range: 32-250F.
Particle Separation Capacity: To 0.2 mil
In heating and air conditioning control systems, the circulation of water containing impurities may result in rapid wear and damage to components such as pumps and control valves. It also causes blockages in heat exchangers, heating elements and pipes, resulting in lower thermal efficiency within the system. The dirt separator separates off these impurities, which are mainly made up of particles of sand and rust, collecting them in a large collection chamber, from which they can be removed even while the system is in operation. This device is capable of efficiently removing the smallest particles, with low head loss.
Webstone Sweat Isolator Flange with Drain 3/4", 1", 1-1/4", 1-1/2" and 2"
Webstone Isolation Flanges with Drain are designed for residential and commercial use with all 2 bolt flanged circulator pumps. The unitary construction of the brass body and flange provide strength and versatility for any application where a pipe and flange meet. This valve is the only choice to use in a closed system where a large port drain and fill valve is required.Additional wing style "T" handle included with mounting nuts and bolts.
