Spirax Sarco - Catalogo Agosto 2017

4.5.49 Control valves

Self-acting controls

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-P073-03

CH Issue 7

Type 130 and HL10

'Safeguard High Limit Control'

Description

The Spirax Sarco safeguard high limit control system is supplied set

to cut-out at approximately 60°C and is designed to protect plant

from overheating. Note: the settings can easily be altered to initiate

cut-out at anywhere between 0°C and 100°C.

The system comprises of a Type 130 control system coupled to an

HL10 high limit cut-out unit complete with 2 m of capillary tube as

standard. Note: the Type 130 control system is only suitable for use

with the HL10 high limit cut-out unit.

For correct installation it is essential to use a sensor pocket (see

'Optional extras'), which can be supplied at extra cost.

The system is designed for use with any one of the following 2-port

or 3-port control valves:

Available types of control valve

Note: For full technical data of the valves mentioned below see the

relevant Technical Information sheet (TI).

SB, KA, KB and KC:- 2-port normally open valves (to close on

temperature rise).

SBRA, KX, KY and NSRA:- 2-port normally closed valves (to open on

temperature rise). Note: These valves must be installed in a separate

bypass pipeline unimpeded by any other control valve when used

with the safeguard high limit control.

Control valve options:

2-port:

SB, SBRA, KA, KB, KC,

KX, KY or NSRA and

3-port:

TW DN25, 40 and 50

Type 130

Control system

3⁄4" BSP

16 (optional)

Microswitch (optional)

TW DN25, 40 and 50:- 3-port mixing / diverting valve.

Optional extras

Capillary tube (12): In multiples of 2 m to a maximum length of 10 m.

Note: The capillary tube should be kept to a minimum to avoid the

HL10

High limit cut-out

system being affected by ambient temperature.

Microswitch (14): This can be connected into an alarm system, using

a Kopex conduit connector and flexible conduit (not supplied with the

product), and can be arranged to either make or break the electrical

circuit on firing of the cut-out (see the 'Current rating table' overleaf).

The microswitch has a degree of protection to IP67 (dust tight and

protected against the effects of immersion) under BS 5490.

The microswitch can be added to an HL10 unit originally

supplied without it by purchasing a conversion kit: which

includes a conduit entry bracket and two screws for attachment.

Pockets (16): Are available in copper or stainless steel having a

3⁄4" BSP (BS 21 taper) or API thread. Union nipple (Y) forms the top

of the pocket and carries a rubber washer (X), and gland nut (W).

Materials

No. Part

1 Body

2 Main spring

3 Piston

4 Ball

5 Ball return spring

6 Bellows

7 Piston insert

8 Bonnet

9 Valve coupling nut

10 Sensor

11 Actuator

12 Capillary tube

13 Adjustment head cover

Material

Conduit

entry

bracket

Bronze

Stainless steel

Brass

Stainless steel BS 3605 CFS 316S18

PVC covered copper

Polypropylene plastic

BS 1400 LG2

BS 2056 302 S26

BS 970 431 S29

AISI 440 B

BS 2056 302 S26

AISI 316L

BS 970 431 S29

BS 2872 CZ 122

EN 12451 CW707R H130/170

Materials for optional extras

No. Part

14 Microswitch

Material

Aluminium

Copper

Mild steel

Stainless steel

Cover

Pocket

BS 1470 1200 H2

BS 2871 C 106

BS 980 CEW-2

BS 3605 CFS 316S18