NDT Series Thermdynamic Steam Trap

AVAILABLE MODELS

FEATURES

The NDT-421 is a thermodynamic steam trap, designed to remove condensate from steam mains and for those applications where the release of air is a concern. It is manufactured in stainless steel. It is unaffected by waterhammer and vibration. Its hardened stainless steel disc ensures intermittent discharge with perfect shut off. Can be supplied with screwed connections NPT (ANSI-B1.20.1). Contact factory for other connection options.

NDT-421: Saturated Steam**NDT 1/4”, only NPT and for saturated steam1/2" and 3/4" NPT Adapters are availableNDT-421.5A 1/2" NPT Example

HOW TO SPECIFY

Specify• Model• Sizes and type of connection• Optional, if necessaryEX.: 1 Thermodynamic Steam Trap NDT-421, forsaturated steam, with 1/4” body and NPT connection.

DIMENSIONS & WEIGHT (inches/pounds)

1.95 0.2001.30 1.261/4”

MODEL Pipe Size

243110 441 507 683 838

10 50 100 150 200 250

NDT-421 ,1/4" 1/2" 3/4"

CAPACITY - Di�erential Pressure - ∆P (psig) x Q (lbs/hr)

Model

Sizes

Connections

Body Material

Options

PMO (Max. Oper. Pressure)

TMO (Max. Oper. Temperature)

Min. Inlet Pressure

Maximum Backpressure

NDT-420

1/4" and 1/2" with adapter

Screwed

AISI 420 SS

Insulated Cover

227.57 psig

662º F

3.56 psig

50% of Operating Pressure

DN A B C Weight

Thermaflo Inc. 2880 Fair Avenue Newberry, South Carolina 29108 Oakland Mill Complex 704-940-1228 www.thermafloengineering.com

A Dimension with 1/2" adapter 4"

DESCRIPTION

HOW TO ORDER REPAIRS (CODE)

The product is totally recyclabe. No ecological hazard is anticipated with the disposal of this product.PRODUCT DISPOSAL

For safety, installation and maintenance information see instructions supplied with the product (MI-0101-37)

SAFETY, INSTALLATION AND MAINTENANCE

ITEM DESCRIPTION Material

AluminiumInsulated Cover

Cover

Disc

Body

AISI 420 SS

AISI 420 SS

AISI 420 SS

1

2

3

4

1/4”

1

3

-

17079

DESCRIPTION ITEM421

Insulated Cover

Disc

STEAM TRAP

NDT 421 THERMODYNAMIC STEAM TRAP

Thermaflo Inc. 2880 Fair Ave Newberry, S.C. Oakland Mill Complex 29108 704-940-1228 www.thermafloengineering.com