Spirax Sarco 211 Manual de usuario

200 Series

Inverted Bucket Steam Traps

Installation and Maintenance Instructions

IM-S03-08

ST Issue 3

0671050/3

1. General

safety information

2. General

product information

3. Installation

4. Commissioning

5. Operation

6. Maintenance

7. pare parts

IM-S03-08 ST Issue 3

Safe operation of these units can only be guaranteed if they are properly installed,

commissioned and maintained by a qualified person (see Section 11 of the attached

Supplementary Safety Information) in compliance with the operating instructions. General

installationandsafetyinstructionsforpipelineandplantconstruction,aswellastheproper

use of tools and safety equipment must also be complied with.

Warning

The cover gasket contains a thin stainless steel support ring which may cause physical

injury if not handled and disposed of carefully.

Isolation

Consider whether closing isolating valves will put any other part of the system or

personnel at risk. Dangers might include; isolation of vents and protective devices or

alarms. Ensure isolation valves are turned off in a gradual way to avoid system shocks.

Pressure

Before attempting any maintenance consider what is or may have been in the pipeline.

Ensure that any pressure is isolated and safely vented to atmospheric pressure before

attempting to maintain the product, this is easily achieved by fitting Spirax Sarco

depressurisation valves type DV (see separate literature for details). Do not assume

that the system is depressurised even when a pressure gauge indicates zero.

Temperature

Allow time for temperature to normalise after isolation to avoid the danger of burns and

consider whether protective clothing (including safety glasses) is required.

Disposal

The product is recyclable. No ecological hazard is anticipated with the disposal of this

product providing due care is taken.

1. General safety information

IM-S03-08 ST Issue 3 3

2.1 General description

The Spirax Sarco 200 series of cast iron inverted bucket steam traps are designed for

installation in vertical pipework with the flow vertically upwards. They are suitable for a wide

range of pressures and applications up to 17 bar g (246 psi g).

Note: For additional information see the following Technical Information Sheets: TI-S03-03

and TI-S03-04.

2.2 Sizes and pipe connections

½" - 2" screwed BSP or NPT

DN15 - 50 flanged*.

*Flanges meet the requirements of BS 4504 DIN PN16, PN10, PN6, ANSI 125 and ANSI 150.

In some sizes the inlet and outlet flanges are formed from the body casting and have tapped

holes to receive studs.

The stud holes are tapped UNC in ANSI flanges and metric in BS 4504 DIN flanges.

2. General product information

Fig. 1 200 Series screwed trap shown

Traps with flanged connections have bodies and covers which may vary from the one

shown above.

IM-S03-08 ST Issue 3

Screwed

Flanged

ScrewedFlanged

2.3 Limiting conditions (ISO 6552)

Maximum operating conditions depend upon orifice size.

Body design conditions exceeds PN16

PMA - Maximum allowable pressure 22 bar g @ 210°C (319 psi g @ 410°F)

TMA - Maximum allowable temperature 210°C @ 22 bar g (410°F @ 319 psi g)

Designed for a maximum cold hyraulic test pressure of: 34 bar g (493 psi g)

Note: The pressure limit on the flange type used should be greater than the pressure limit of

the internal mechanism (DPMX) selected.

DPMX - Maximum differential pressure bar

Size 2 2.5 4 8.5 12.5 13.8 17

½" 211/12 - 211/10 211/8 - 211/7 211/6

¾" 212/16 - 212/12 212/10 - 212/8 212/7

1" 213/24 - 213/20 213/16 213/14 - 213/12

1½" 215/36 - 215/28 215/22 215/20 - 215/18

2" - 216/48 216/40 216/32 216/28 - 216/24

DN15 221/12 - 221/10 221/8 - 221/7 221/6

DN20 222/16 - 222/12 222/10 - 222/8 222/7

DN25 223/24 - 223/20 223/16 223/14 - 223/12

DN40 225/36 - 225/28 225/22 225/20 - 225/18

DN50 - 226/48 226/40 226/32 226/28 - 226/24

2.4 Dimensions / weights (approximate) in mm and kg

TypeSizeABCDWeight

Type 211 ½" 163 108 178 67 2.8

Type 212 ¾" 200 135 229 93 5.2

Type 213 1" 269 188 280 114 12.2

Type 215 1½" 365 238 380 140 27.0

Type 216 2" 432 286 470 185 43.5

Type 221 DN15 215 108 254 - 4.9

Type 222 DN20 286 135 280 - 9.1

Type 223 DN25 305 188 305 121 16.3

Type 225 DN40 370 238 380 140 30.8

Type 226 DN50 450 286 457 165 49.4

IM-S03-08 ST Issue 3 5

Fig. 2

Type

223

225

226

Type

221

222

Type

211

212

213

215

216

C Withdrawal distance

IM-S03-08 ST Issue 3

3. Installation

Note: Before actioning any installation observe the 'Safety information' in Section 1.

Referring to the Installation and Maintenance Instructions, name-plate and Technical Information

Sheet, check that the product is suitable for the intended installation:

3.1 Check materials, pressure and temperature and their maximum values. If the maximum

operating limit of the product is lower than that of the system in which it is being fitted,

ensure that a safety device is included in the system to prevent overpressurisation.

3.2 Determine the correct installation situation and the correct direction of fluid flow.

3.3 Remove protective covers from all connections.

3.4 The trap must be installed with the body upright so that the bucket is rising and falling

vertically. The inlet should be at the bottom with the trap installed below the drain point

so that a water seal can be maintained around the open end of the bucket.

Inverted bucket traps do not permit rapid release of air. On process applications, in

particular, this can lead to slow warm-up times and waterlogging of the steam space. A

separateexternalairventisthereforerequiredinparalleltoventairefficiently.Anybypass

shouldbepositionedabovethetrap.Ifitisbelow,andisleakingorleftopenthewaterseal

could be blown away leading to steam wastage. Where inverted bucket traps are fitted

in exposed conditions the possibility of freezing damage can be reduced by

thermal insulation.

On some sizes of flanged traps the inlet and outlet flanges are formed from the

bodyandcovercastingsandthereforehave tappedholestoreceivestuds.Thestudholes

are tapped UNC for ANSI flanges and tapped metric for BS 4505 / DIN flanges. Ensure

that you have the required tools available before undertaking installation.

3.5 If the trap is installed on a superheated steam system application, then a non return

valve should be fitted on the trap inlet, to prevent the trap from losing its waterseal.

Priming of the trap with water may be required before commissioning.

3.6 Open isolation valves slowly, until normal operating conditions are achieved.

3.7 Check for leaks and correct operation.

Note: Ifthetrapistodischargetoatmosphereensureitistoasafeplace,thedischargingfluid

may be at a temperature of 100°C (212°F).

4. Commissioning

After installation or maintenance ensure that the system is fully functioning. Carry out tests on

any alarms or protective devices.

IM-S03-08 ST Issue 3 7

T - 01

Air vent

Fig. 3 Typical installation - Oil storage tanks

Air vent

Bucket

trap Bucket

trap

5. Operation

Under most conditions the trap will discharge condensate with a 'blast' type action. Under low

load and / or low pressure applications the discharge may tend to 'dribble'.

Condensate is discharged at steam temperature so due care must be given to the site of

the discharge.

IM-S03-08 ST Issue 3

Note:

Before actioning any maintenance programme observe the 'Safety information' in Section 1.

Warning

The cover gasket contains a thin stainless steel support ring which may cause physical

injury if not handled and disposed of carefully.

It is recommended that new gaskets and spares are used whenever maintenance is

undertaken. Ensure that the correct tools and necessary protective equipment are used at all

times. When maintenance is complete, open isolation valves slowly and check for leaks.

How to fit the valve and seat assembly

-Isolate the trap and disconnect the outlet connection, open up the trap by undoing the

cover nuts (2).

-Unhook the bucket (5) from the valve lever (11).

-Remove the valve seat (9).

-Remove the valve guide plate (7) by undoing the two screws (6).

-Screw in the new valve seat (9), using a little Loctate 620 on the threads and making sure that

joint faces are clean. See Table 1 for the recommended tightening torques.

-Fix the new valve guide plate (7) in position by using new screws (6) which are supplied,

hook the new valve lever (11) over the pins (part of the valve guide plate) and centralise

the valve to the orifice and tighten the screws (see Table 1 for the recommended tightening

torques).

-Refit the cover using new gasket, tighten cover nuts (2) to the recommended tightening

torque figures shown in Table 1 and reconnect the outlet pipework.

-Open the isolation valve slowly and check for leaks.

Note: In some earlier models of the 212 and 222 trap the hooks on the guide plate were

reversed. This no longer applies and the standard guide plate (7) as shown is the

correct replacement.

This also applies to the spares which are still available for the obsolete 214 and 224 traps.

6. Maintenance

IM-S03-08 ST Issue 3 9

Table 1 Recommended tightening torques

Item No Size of trap or N m (lbf ft)

2(6 off) ½" - DN15 M8 x 35 18 - 22 (13 - 16)

2(8 off) ¾" - DN20 M10 x 40 16 - 20 (12 - 15)

2(10 off) 1" - DN25 M12 x 60 24 - 28 (18 - 21)

2(12 off) 1½" - DN40 M16 x 75 60 - 66 (44 - 32)

2(12 off) 2" - DN50 M16 x 75 64 - 70 (47 - 51)

½" - DN15 2BAx5

/16" 4 - 5 (3 - 4)

¾" - DN20 2BAx 5

/16" 4 - 5 (3 - 4)

61" - DN25 ¼" WHITx ½" 10 - 12 (7 - 9)

1½" - DN40 ¼" WHITx ½" 10 - 12 (7 - 9)

2" - DN50 5/

" WHIT x ½" 14 - 16 (10 - 12)

½" - DN15 ½" A/F 23 - 27 (17 - 20)

¾" - DN20 5

/8" A/F 40 - 44 (29 - 32)

91" - DN25 7

/8" A/F 80 - 88 (59 - 65)

1½" - DN40 1¼" A/F 175 - 190 (129 - 140)

2" - DN50 1½" A/F 270 - 300 (199 - 220)

12 ½" - 2" 1½"A/F 60 - 70 (44 - 51)

DN15 - DN50

Fig. 4 Screwed version shown

IM-S03-08 ST Issue 3

7. pare parts

Valve and seat assembly

The spare parts available are shown in heavy outline. Parts shown in broken line are not

supplied as spares.

Available spares

Valve and seat assembly (state pressure range) 6(2 off), 7, 9, 11

Bucket 5

Internal tube 12

Cover gasket (packet of 3) 8

How to order spares

Always order spare parts by using the description given in the column headed 'Available spares'

and state the size and full definition of the trap eg. 223/16.

Example: 1 - Valve and seat assembly for a Spirax Sarco DN25, 223/16 (having a DPMX of

8.5 bar g) cast iron inverted bucket steam trap.

Fig. 5

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