Spirax Sarco - Catalogo Agosto 2017

Pipeline ancillaries

Sight glasses

Dimensions / weights (approximate) in mm and kg

Size

Weight

1⁄2"

0.6

3⁄4"

0.6

108

1.2

Spare parts

The spare parts available are shown in solid outline. Parts drawn

in broken line are not supplied as spares.

Available spares

Sight tube assembly

Discharge tube assembly

Fastener set (set of 4*)

Gasket set (packet of 6†)

Available spares are common to 1⁄2" and 3⁄4" sizes, but not 1".

* Earlier models used studs, nuts and washers.

† Earlier models used ethylene propylene gaskets which were

considerably thicker than graphite laminate.

How to order spares

Always order spares by using the description given in the column

headed 'Available spares' and state the size of the sight check.

Example: 1 off sight tube assembly for a 1⁄2" Spirax Sarco sight

check.

Withdrawal distance E

2 (2 off), 3 (1 off)

4, 5

7, 8

Recommended tightening torque

Item

Size

1⁄2", 3⁄4" and 1"

N m

1.8 - 2.2

5.0 - 6.0

10 A/F

M6 x 65

Safety information, installation and maintenance

For full details see the Installation and Maintenance Instructions

(IM-S32-04) supplied with the product.

Warning:

Under certain conditions corrosive elements in condensate can

affect the inside face of the sight tube, particularly where caustic

alkali and hydrofluoric acid are present. It is recommended that the

sight check is periodically checked for thinning of the sight tube. If

there is evidence of thinning or erosion damage then the sight tube

should be replaced immediately. Always wear eye protection when

viewing the contents of the sight check.

Installation and maintenance note:

The sight check should have stop valves fitted on both the inlet and

outlet. It is imperative that the upstream stop valve is closed first in

order to prevent over pressurisation.

Sight checks can be

fitted in either a horizontal or a vertical line on

the outlet side of the steam trap. Where the trap is a blast discharge

type e.g. thermodynamic, the sight check must be fitted at least

1 m from the trap. This is to ensure that the glass tube is not

subjected to thermal shock or pressure. Reasonable steps should

be taken to protect personnel from injury in the unlikely event that

the glass breaks.

Ensure access is available to enable the withdrawal of the

discharge tube.

Disposal

This product is recyclable. No ecological hazard is anticipated with

disposal of this product providing due care is taken.

How to order

Example: 1 off Spirax Sarco 1⁄2" BSP sight check having a bronze

body and borosillicate glass tube.