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Check and admission valves of high pressure maintenance

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Purpose :

Valves are parts of high pressure heaters protection device and are used to protect turbine from water ingress into it in case of pipe rapture by turning off the high pressure heater and bypassing the feed water not counting high pressure heater

Valves are shared. The cavities above the valves (over piston cavities) of the intake valve and the check valve are interconnected by means of overflow pipes.

Drive type — automatic.

Sealing surface – corrosion-resistant steel.

Tightness class – "С" according to ДСТУ EN 12266-1 (GOST Р 54808-2011).

Connection to pipeline – by welding.

Operating medium: high pressure heater feed water.

Operating medium flow – according to the arrow of the pic.

Installation position: horizontal pipeline areas – with bonnet up.

Ambient class – У3 according to GOST 15150.

Specifications

Пример условного обозначения:

СЭ.

Conventional letter of Souz Energo Concern according to СТ ЦКБА 035-2007
КБ.

Valve type

Valve type Abbreviation Designation
Check valve (admission valve of high pressure maintenance) КБ 16
1.

Body material

Body material Designation
Carbon steel 1
Alloy steel 2
Corrosion-resistant steel 3
Gray iron 4
3.

Sealing surface material

Sealing surface material Designation
Brass, bronze 1
Corrosion-resistant steel 3
Rubber 10
Non-metalic 14
3.

Type of connection

Type of connection Designation
Interflanged 1
Flanged 2
By welding 3
Coupling 4
200.

Nominal diameter (DN)
200

Nominal pressure (operating) PN, bar
16

Valve type designation
0026

Development identification number according to registration book

Select operating pressure (bar):

PN	DN	Designation	Medium	t, °C	Analog	Safety category	Leakage, max	Макс. доп. протечки см³/мин, не более	Ход клапана, h, мм
200	200	*СЭ.КБ.1.3.3.200.200 160026.00.000	Water	220	-	II (1)	425	0,36	84
200	200	*СЭ.КП.1.3.3.200.200 171039.00.000	Water	170	-	VI (4)	360	0,36	111
250	225	*СЭ.КБ.1.3.3.225.250 160027.00.000	Water	250	-	II (1)	350	0,4	104
250	225	*СЭ.КП.1.3.3.225.250 171040.00.000	Water	180	-	VI (4)	350	0,4	118
250	250	*СЭ.КБ.1.3.3.250.250 160028.00.000	Water	250	-	II (1)	425	0,45	104
250	250	*СЭ.КП.1.3.3.250.250 171041.00.000	Water	180	-	VI (4)	425	0,45	118

Dimensions

Check valve

Designation	dвх, мм	Dвх, мм	dвых, мм	Dвых, мм	dn, мм	Dn, мм	L1, мм	L2, мм	L3, мм	l, мм	Н, мм	Н1, мм	Н2, мм	Weight, kg
СЭ.КБ.1.3.3.200.200 160026.00.000	209	245	209	245	90	110	536	736	856	196	748	39	206	348
СЭ.КБ.1.3.3.225.250 160027.00.000	226	273	226	273	103	135	532	773	918	209	778	39	200	388
СЭ.КБ.1.3.3.250.250 160028.00.000	226	273	271	325	160	195	602	833	1038	235	778	39	200	433

Admission valve

Designation	Ød вх	ØD вх	Ød вых	Ød1 вых	ØD вых	Ødn	ØDn	L1	L2	L3	l1	l2	Н	Н1	H2	Масса, кг
СЭ.КП.1.3.3.200.200 171039.00.000	209	245	209	245	325	90	110	536	736	856	195	235	1385	322	406	510
СЭ.КП.1.3.3.225.250 171040.00.000	226	274	226	273	325	103	135	532	773	918	209	235	1390	322	400	545
СЭ.КП.1.3.3.250.250 171041.00.000	271	325	226	273	325	160	195	602	883	1038	235	235	1390	322	400	603

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Catalogues for download

Valve type	Abbreviation	Designation
Check valve (admission valve of high pressure maintenance)	КБ	16

Body material	Designation
Carbon steel	1
Alloy steel	2
Corrosion-resistant steel	3
Gray iron	4

Sealing surface material	Designation
Brass, bronze	1
Corrosion-resistant steel	3
Rubber	10
Non-metalic	14

Type of connection	Designation
Interflanged	1
Flanged	2
By welding	3
Coupling	4