©Johnstone Supply eCatalog 216

HYDRONICS Valves

Vacuum Breaker • Used to control induced vacuum in steam systems • Adjustable from 1/4" to 20" Hg vacuum

Warning: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Order #

Mfg. #

Model #

Conn. Size

Max. Pressure

Max. Temp.

L41-575

401446

62

3/4" NPT (Straight) 150 PSI

366°F

Steam Vents • Used to vent air from radiators and convectors • L41-571 has six port settings for true proportional venting; others have a single non adjustable port

• Max. pressure: 10 PSI Warning: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

A

Fig. Order #

Mfg. #

Model #

Description

Conn. Size

L41-571 L41-572 L41-573 L41-574

A B C C

401422 401440 401455 401458

#1A #40 #41 #43

Radiator Steam Vent Radiator Steam Vent

1/8" NPT (Angle) 1/8" NPT (Angle)

Convector Steam Vent 1/8" NPT (Straight) Convector Steam Vent 1/4" NPT (Straight)

C

B

Jacobus ® Steam Air Vents • Vents accumulated, trapped troublesome air • #1 vent is designed to vent the air from the main lines as well as on longer runs

• #5 has venting capacity equal to 4 ordinary air vents; used on radiators near boiler and in warm rooms • Nickel plated brass body

Fig. Order # Mfg. # Type

Height

Width 3-1/2" 2-1/4"

Pipe Size

Vent Size 0.1850" 0.7000"

L41-837

A B

1

Straight Main Vent

1" 1"

1/2" x 3/4"

A

B

L41-838 5

Angle

1/8"

Thermostatic Steam Traps • Used to vent air and gas in response to pressure • Resistant to water hammer and chemicals

• Brass body, stainless steel components WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Order #

Mfg. #

Model #

Conn. Size

Max. Pressure

Order #

Mfg. #

Model #

Conn. Size

Max. Pressure

L41-566 L41-567 L41-568

L41-569 L41-570

401536 17C-2 Angle 401545 17C-2 Swivel 401551 17C-2 Vertical

1/2" 1/2" 1/2"

25 PSI 25 PSI 25 PSI

402002 8C-A-2-125 402003 8C-A-3-125

1/2" 3/4"

125 PSI 125 PSI

SOLUTION-ORIENTED CONTRACTOR CENTRIC TRAINING • INVENTORY • SUPPORT

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