STEAM TRAPS & PIPELINE ACCESSORIES

BALANCED PRESSURE THERMOSTATIC AIR VENT-PT31AV

Pennant designed PT31AV air vent to remove air and non-condensable gases from steam systems. The removal of these gases is important for achieving better start-up efficiency and heat transfer in normal running.

Working principle

Pennant balanced pressure thermostatic air vent contains a special liquid present within the capsule condenses or evaporates due to changes in the temperature. The boiling point of the capsule is few degrees less than that of the boiling point of water.

  • When the temperature raises, the liquid evaporates and the valve closes.
  • When the temperature drops, the liquid condenses and the valve opens
Sizes

Pennant thermostatic air vent available in the following sizes,
DN 8, 10, 15, 20

Connections

Pennant thermostatic air vent available with the following end connections, Screwed (NPT, BSPT, BSP) , Socket weld 

Applications

Typical applications of air vent include

  • Jacketed kettles
  • Retorts
  • Vulcanizers, 
  • Jacketed sterilizers 
  • Saturated and Super-heated steam lines 

or other equipment’s where air could accumulate in areas of the steam applications.

USER BENEFITS :

  • Improves heat transfer thereby saving energy and productivity.
  • Maintains process performance where temperature is critical.
  • Reduces corrosion 
  •  Reduces maintenance costs.
  •  Promotes EVEN  heating and improves product quality.
Available Spares

Controller, Strainer Screen, Gasket.

MATERIAL

NO. PART MATERIAL   QTY. (Nos)
1 BODY AISI 304* 1
2 COVER AISI 304* 1
3 COVER GASKET NON-CAF 1
4 STRAINER SCREEN AISI 304 1
5 CONTROLLER ASSY. AISI 304 1
6 GASKET COPPER 1

*ASTM-A182 GR-F304 on special request.

Limiting Conditions:

PMA: Max. allowable pressure 315 psig
TMA: Max. allowable temp. 428 °F
PMO: Max. operating pressure 315 psig
TMO: Max. operating temp 428 °F
Cold hydro test pressure 475 psig

DIMENSIONS:

SIZE Ø D L Wt
¼, ⅜, ½, ¾ 2.16 2.8 1.8 lb

Imperial

PMA TMA PMO TMO Size
315 psig 576 °F 315 psig 480 °F ¼”, 3/8”, ½”, ¾”

Metric

PMO (bar) TMA (ºC) Capacity at PMO (m3/hr) Size
22 / 220 10 DN8~20
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