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SAFETY DEVICES

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www.henrytech.com

Technical Specifications

Set pressure range: 150 to 450 PSI

Standard set pressures: 250, 290, 330, 350 and 375 PSI

Allowable operating temperature: -20°F to +200°F (-29°C to +93°C)

Main Features

Ÿ

Brass construction

Ÿ

Extended ODS connections

Ÿ

Positive pressure relief during high pressure spikes

Ÿ

Consistent operation and reseating

Ÿ

Flow direction arrow

The function of a By-Pass Valve is to handle momentary instances of

over pressure (not due to fire) to prevent Pressure Relief Valve

discharge.

BY-PASS VALVES

Applications

The Henry Technologies’ 5467 By-Pass Valve is positioned between the

pressure vessel and the Three-Way Valve before the Pressure Relief Valve

as shown in Figure 2 below. In the event of a high pressure spike, the valve

bypasses excess pressure to the low side of the system thus preventing the

Pressure Relief Valve from discharging refrigerant into the atmosphere. If

the over pressure increases then the Pressure Relief Valve will be activated.

The valve is designed to bypass only enough gas to reduce the effects of

high pressure spikes. The valve has relatively low flow rates, thus high flow

rates would adversely affect system performance. Continuous bypassing of

refrigerant for extended periods of time can lead to loss of system capacity,

excessively high compressor temperatures, and possible compressor failure.

We recommend a sensor be put in the By-Pass Valve discharge line to

monitor if the valve is relieving from high to low side. All By-Pass Valves are

suitable for use with HFC and HCFC refrigerants and their associated oils, as

well as other industrial fluids non-corrosive to brass, steel, copper and Teflon.

Selection Guidelines

Henry Technologies By-Pass Valves are to be set approximately 80-85% of

relief valve setting. See the Relief Valve Selection Guidelines located in this

catalog for more information.

Relief

Valve

Three

Way

Valve

Hi to Low

By-Pass

Valve

Transducer

Valve

High

Pressure

Receiver

Suction

Header

A

B

D

C

Part No By-Pass Valve Setting

(PSI)

Capacity

(#Air/Min)

Relief Valve Setting

(PSI)

ODS

(Inch)

Dimensions (inch)

Weight

(lbs)

A

B

C

D

5467-250

250

3.5

300

5/8

7.43

3.60

3.88

0.69

2.60

5467-290

290

4.0

350

5/8

7.43

3.60

3.88

0.69

2.60

5467-330

330

4.5

400

5/8

7.43

3.60

3.88

0.69

2.60

5467-350

350

4.8

425

5/8

7.43

3.60

3.88

0.69

2.60

5467-375

375

5.1

450

5/8

7.43

3.60

3.88

0.69

2.60

FIG 1

FIG 2

1

2

Œ

Inlet



Outlet

30