Spirax Sarco - Catalogo Agosto 2017

5.7.3

Steam

saturation

curve

Steam

saturation

curve

Steam traps

Thermodynamic

Local regulations may restrict the use of this product to below the conditions quoted.

In the interests of development and improvement of the product, we reserve the right to change the specification without notice.

TI-P068-06

ST Issue 7

TD259 and TD259A

Thermodynamic Steam Traps

Description

The TD259 is a maintainable thermodynamic steam trap for use

on instrument tracing or any small bore steam heating installations.

It can be provided with an anti-air-binding disc for quick start-up

on batch process and is designated TD259A.

Standards

The product fully complies with the requirements of the European

Pressure Equipment Directive 97/23/EC.

Certification

This product is available with a manufacturer's Typical Test Report.

Note: All certification/inspection requirements must be stated at

the time of order placement.

Sizes and pipe connections

1⁄4" screwed BSP or NPT.

Pressure/temperature limits

TD259

��

TD259A

��

Pressure bar g

��

Pressure bar g

The product must not be used in this region.

TD259A

anti-air-binding disc

Body design conditions

PMA Maximum allowable pressure

PN63

63 bar g @ 120°C

400°C

255°C

0°C

42 barg

400°C @ 42 bar g

255°C @ 56 bar g

0°C

TMA

Maximum allowable

temperature

Minimum allowable temperature

TD259

TD259A

PMO

Maximum operating pressure

for saturated steam service

TMO

Maximum operating

temperature

TD259

TD259A

Minimum operating temperature

Note: For lower operating temperatures consult Spirax Sarco.

Materials

No.

Part

Material

Minimum pressure for satisfactory operation is 0.25 bar g

PMOB

Maximum operating backpressure must not exceed 80%

of the upstream pressure

DPMX Maximum differential pressure is limited to the PMO

Designed for a maximum cold hydraulic test pressure of 95 bar g

Body

Cap

Disc

Stainless steel

AISI 420

AISI 416

BS 1449 420 S45