Description

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Size and pipe connections

1⁄2", 3⁄4", 1", 11⁄4", 11⁄2" and 2" Screwed BSP or NPT, Socket

weld and Butt weld.

DN15, DN20, DN25, DN32, DN40 and DN50 Flanged:

EN 1092 PN25, PN40, PN63 and PN100

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'special design water level limiter' in the context of EN 12952-11. It

Clamping

screw

designed for the blowdown of steam boilers or for other high pressure

is suitable for use with steam or hot water boilers operating up to

drop, low flow applications, and are generally used with a blowdown

2.4.6

32 bar at 239°C.

controller as part of an automatic BCV control system.

LC3050

The LC3050 is a dual voltage unit, 230 Vac or 115 Vac for use with

ASME class 125, 150, 250, 300 and 600

JIS / KS 10K, 20K, 30K and 40K

ALARM

OK

AL

The flowrate is adjusted by setting the stroke of the valve spindle.

Spirax Sarco high or low level, self-monitoring high integrity probes.

These valves have been specially designed to minimize seat erosion and

The LC3050 has two LED’s, indicating normal and alarm conditions,

ensure consistent tight shut-off.

and a test button (AL). The other buttons on the keypad are non-

A 1⁄4" BSP plug at the base of the valve may be removed to allow a sample

functional.

cooler to be fitted.

The unit can be panel, DIN rail or chassis mounted.

An automatic cyclic test of the probe, probe cable and controller is

Two versions are available:

carried out every few seconds by internally simulating a fault in the

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Electrohydraulically actuated BCV blowdown control valve.

probe.

A test button is fitted so that a full test of the probe, controller, and

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Pneumatically actuated BCV blowdown control valve.

associated circuits can be carried out. Provision is made for the

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t e s t b u t t o n i f r e q u i r e d .

WARNING; In most countries, steam boilers operating with

Material

Screwed Socket weld Flanged

Butt weld

limited supervision require two self-monitoring level probes

and controllers to provide two independent low level alarms.

Carbon steel

BCV41

A high level alarm is also advised, and is compulsory in some

cSotuanintlreiess.steel BCV61

BCV62

BCV63

SG iron

BCV71

BCV73

Principal features:

Electrohydraulically actuated

Clamping

screw

The LC3050 is normally configured to warn of a change in level

outside normal limits for steam or hot water boilers, tanks or vessels,

by de-energising an alarm relay. Spirax Sarco high-integrity, self-

monitoring probes can indicate internal faults or water ingress.

The LC3050 compares the resistance to earth from the probe,

through the water, to the boiler or vessel shell. If a change in water

level causes this resistance to change beyond a set limit, a timer

is engaged which alters the state of internal relays after a pre-set

delay. This signal is normally used to trigger an alarm, and cut the

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High integrity, self-monitoring low or high level alarm.

Spira-trol

valve body options

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Dual mains supply, 230/115 Vac.

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LED indication of status.

316L stainless steel with

Stellite 6 facing

Approvals

TM

Seating

Hard facing

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Infrared communications.

Function / Inputs / Outputs

Function

BCV blowdown control valves are compatible with the following

An assessment upon the LP3050 / LP30 Low Level Alarm System

actuators and positioners:

concluded it meets the requirements of IEC 61508-2:2010, to Saftey

Intergrity Level of SIL2 when used in a 1001 architecture and SIL3

Version

Actuator

Positioners

when used in 1002 architecture.

Electric

AHL1 series

This product complies with the Electromagnetic Compatibility

Directive 2004 / 108 / EC and all its requirements.

Connections

BCV42

BCV43

BCV44

BCV64

Alarm test

button

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e p a c k i n g H i g h t e m p e r a t u r e a p p l i c a t i o n s

PP5 (pneumatic)

EP5 (electropneumatic)

This product meets all the Requirements of the Directive and is

Pneumatic

PN9_ _ _ ISP5 (intrinsically safe electropneumatic)

suitable for Class A Environments (eg Industrial). The LC3050 meets

series

the requirements of the DirSePc2ti0ve0isb,ySPm4e0e0tinagndthSeP5C0o0ntrolling

supply to the burner.

Input / output

Pneumatically

actuated

standard:

(microprocessor based electropneumatic)

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EN 61326-1: 2006 - Electrical equipment for measurement control

SP300 (digital communications)

and laboratory use - EMC requirements Part 1: General

requirements.

Boiler house

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 2016

TDS blowdown 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.

© Copyright 2015

BCV

LC3050

Blowdown Control Valves

Level Controller

DN15 to DN50 (1⁄2" to 2")

The product accepts inputs from the LP30 low level probe or the

LP31 high level probe.

TInhaedsdeitipornotdhuecLtsC3fu0l5ly0 mcoemetpslythewEitMh CthreqrueiqreumiremntsenotfsthoeffothlloewEinugropeanWith the water level normal the green LED will be lit, and the boiler

panel will indicate a normal water level. The green LED briefly

extinguishes every few seconds showing that the automatic cyclic

test is being carried out.

Standards

PstraensdsaurdesE: quipment Directive 97 / 23 / EC.

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EN 12953-9: 2007 - Shell boilers Part 9: Requirements for limiting

Certification

devices of the boiler and accessories.

These products are available with material certification to EN 10204 3.1.

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EN 12952-11: 2007 - Water-tube boilers and auxiliary installations

Note: All certification / inspection requirements must be stated at theA compensation tip on the probe signals an alarm if the probe

Part 11: Requirements for limiting devices of the boiler and

should become faulty through water ingress or an internal wiring

fault.

Outputs can be remotely accessed via the RS485 / MODBUS

communications.

time of order placement.

accessories.

The product complies with Low Voltage Directive (2006 / 95 / EC)

Operation

by meeting the standards of:

BCV blowdown control valves are supplied loaded to the closed

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EN 61010-1:2010 Safety requirements for electrical equipment for

position.

measurement, control and laboratory use.

Other features

The LC3050 can communicate via an infrared link between

adjacent controllers. It enables the alarm status of the LC3050 to

Electrical version: When the power is connected to the actuator the

TheLC3050hasbeentype-testedasaSpecialDesignWaterLevel

valve opens to the position set by the internal limit switch.

Limiter by meeting the Standard:

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Vd TÜV requirements for water level control and limiting devices,

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Pneumatic version: When the solenoid valve opens, air is admitted to

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UL listed (open)

be passed to a product fitted with RS485 (user). User products are

t h o s e f i t t e d w i t h a g r a p h i c s d i s p l a y

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C 3 0 5 0 i s d e f i n e d a s a

slave unit. No set-up or adjustment is needed.

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