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Nepal
Steam Traps

PT62HP Float & Thermostatic Steam Trap (DN15–25)

By Pennant Engineering Pvt. Ltd.IBR Approved

High-pressure H-pattern float & thermostatic steam trap in cast steel with internal thermostatic air vent for DN15–25 lines, rated to 32 kg/cm² and 400°C, in Non-IBR or IBR approved form.

Specifications

Sizes
DN 15, 20, 25
Available types
PT62HP (thermostatic air vent), PT62HP S (SLR), PT62HP C (air vent + SLR)
Operation
Modulating discharge at steam temperature with thermostatic air vent
Use
Saturated and superheated steam
Max allowable temperature (TMA)
400°C
Max operating pressure (PMO)
32 kg/cm²(g)
Body / shell design rating
42 @ RT
Cold hydro test pressure
48 kg/cm²(g)
Max differential pressure
PT62HP-21: 21 kg/cm² / PT62HP-25: 25 kg/cm² / PT62HP-32: 32 kg/cm²
End connection
Screwed (NPT/BSPT/BSP), Flanged, Socket Weld
Approval options
Non-IBR / IBR approved
Installation
Horizontal, flow left to right, below equipment drain point with float arm horizontal
Recommended safety factor
Steady 1.5–2; fluctuating 2–3
Body material
Cast Steel (ASTM A216 Gr. WCB)
Internals
Stainless Steel (AISI 304)
Valve seat
AISI 410/420
Available spares
Valve seat, ball float & lever assembly, air vent assembly, gaskets

Overview

The PT62HP (DN15–25) is a high-pressure H-pattern float and thermostatic steam trap with an internal thermostatic air vent, in cast steel construction with stainless steel internals. Designed for draining condensate from low and medium pressure steam heating and process equipment, it gives a modulating discharge at steam temperature with excellent air venting. It is available with steam lock release (SLR) options and in Non-IBR or IBR approved form. Rated to 400°C with a 32 kg/cm²(g) maximum operating pressure, the cast steel body takes it well beyond the cast iron PT61 for high-pressure steam mains. Supplied, sized and serviced for steam systems across Nepal.

Features & Benefits

  • Cast steel body to ASTM A216 Gr. WCB is the reason this trap is rated far higher than the cast iron PT61, taking it to 32 kg/cm² operating pressure and 400°C, which is the correct choice for high-pressure steam mains where a cast iron trap would not be permitted.
  • The float-and-thermostatic mechanism discharges condensate continuously at steam temperature, keeping the full heating surface of process equipment active, unlike traps that back up condensate to sub-cool it.
  • The internal thermostatic air vent clears air automatically on start-up, avoiding the air-binding that slows down inverted bucket traps at commissioning.
  • IBR-approved option is available, which is a legal requirement for boiler-connected steam piping, so the same product can serve regulated and non-regulated installations by specifying NIBR or IBR at order time.
  • Three differential-pressure variants (21/25/32) let the orifice be matched to the actual working differential, since a float trap's capacity falls as its pressure rating rises and an oversized orifice can fail to seal.
  • Graphite gasket with SS reinforcement withstands the higher temperature and thermal cycling of this pressure class better than a soft or non-asbestos gasket, reducing the risk of cover-joint leakage over the trap's life.
  • Welded-on ASTM A105 forged carbon steel flanges give a proper high-pressure flange joint integral to the body, rather than a threaded flange adapter that would be a weak point at this rating.

Dimensions

All dimensions in mm
Size (mm)Size (inch)RatingABCDEWt (kg)
151/2"#150, PN16, PN401201871701112205.4
203/4"#150, PN16, PN401201871701112205.8
251"#150, PN16, PN4012018717011122011.5
151/2"#300---------------5.9
203/4"#300---------------6.5
251"#300---------------12.5
  • All dimensions are in mm, weights in kg.
  • #300 rating shares the A–E dimensions of the #150 rows; only weights differ.
  • Dimensions shown here are for indicative purposes only. Please contact our representative for exact dimensions.

Flange Face-to-Face Dimension (F)

All dimensions in mm
Size (mm)Size (inch)WNRF #150WNRF #300Integral Flange
151/2"195205150
203/4"200210150
251"210220160
  • All dimensions are in mm.

Trap Discharge Capacity

All dimensions in kg/hr
Trap Discharge Capacity (kg/hr) — Differential Pressure (kg/cm²)
ModelSize0.51234.5791012.51417.5212532
PT62HP-21DN15~25260365460520590620645685700710730740------
PT62HP-25DN15~25200280350400455475495525535545560570580---
PT62HP-32DN15~25145205260295335350365385395400410420425440
  • Discharge capacity in kg/hr against differential pressure in kg/cm².
  • Recommended safety factor: steady 1.5–2; fluctuating 2–3.

Materials of Construction

All dimensions in
ComponentMaterialSpecification
BodyCast SteelASTM A216 Gr. WCB
CoverCast SteelASTM A216 Gr. WCB
GasketGraphite with SS Reinforcement---
Valve SeatAISI 410/420---
Ball Float & Lever AssemblyAISI 304---
Air VentBimetal / SS---
BoltASTM A193 Gr. B7---
Drain PlugCarbon Steel---
Bracket AssemblyAISI 304---
Gasket (Drain Plug)Copper---
SLR UnitAISI 304---