Pipeline ancillaries

Diffusers

7.10.1

ISO 9001

TI-P155-02

ST Issue 4

Cert. No. LRQ 0963008

Description

The Spirax Sarco diffuser is a compact unit designed to be fitted to

the outlet of a steam or air trap discharging to atmosphere. The

diffuser reduces the problem of noise and erosion by cushioning

high velocity discharge. It can be fitted to any trap where conditions

promote blast discharge similar to that associated with balanced

pressure, inverted bucket or thermodynamic traps.

A reduction of more than 80% of sound pressure level can be

expected measured at 1 metre from the discharge point.

Standards

This product fully complies with the requirements of the European

Pressure Equipment Directive 97/23/EC.

Limiting conditions

Suitable for use with traps rated up to PN63.

Sizes and pipe connections

1⁄2" and 3⁄4" screwed BSP (BS 21 parallel) or NPT (inlet only).

1⁄2" and 3⁄4" socket weld end (inlet only).

DF1

Diffuser

Materials

No. Part

1

Case

Material

Stainless steel

Stainless steel

Stainless steel

Stainless steel

2

1

3

End boss screwed

ASTM A 240 Gr. 304

ASTM A 351 CF 8

ASTM A 276 Gr. 304

ASTM A 580 Gr. 304

2

3

Internals

Socket weld

Dimensions / weights (approximate) in mm and kg

Size

A

B

C

Weight

1⁄2"

59

40

27

0.23

3⁄4"

60

40

32

0.23

C

A

Example: 1 off Spirax Sarco 1⁄2" DF1 diffuser having a screwed BSP

B

connection.

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.

© Copyright 2007

Safety information, installation and maintenance

For full details see the Installation and Maintenance Instructions

(IM-P155-07) supplied with the product.

Installation note:

The diffuser should be fitted on the outlet side of a steam trap or air

trap with a suitable fitting to ensure that the discharge of condensate

is towards the ground or some safe enclosure. The recommended

distance for the outlet of the diffusers to the ground is a maximum

of 100 mm (4"). The discharge from the DF1 must be facing vertically

downwards.

How to order