Nuclear power engineering

- S43

Gate valve S43

DN 65 – 400

Technical description

Body made of closed-die or open-die forging, cast or welded yoke. Seats pressed into the body and secured with a seal weld. Sealing surfaces of the seats and wedge hard-faced with a hard-facing alloy. Stem packing and pressure seal bonnet sealing ring are made of expanded graphite. The gate valves are designed for full differential pressure and no bypass is required. If a bypass is required, they are supplied with one to three valves and a T-piece for a piping bypass. They can also be equipped with protection of the central part of the body. The design of S43 gate valves includes sizing of the main parts according to the pressure-temperature system. On request, a packing permanently loaded by a spring (Live Loading System) can be supplied. This design is used where operating conditions do not allow frequent inspection of the valve or the nature of operation rules out regular maintenance of the packing.

Image gallery

Drawings and dimensions

Application

Shut-off valve for water, steam and other media used in power and chemical plants, depending on the choice of body material, for normal, tropical, explosive and seismic environments.

Operation

Operated by handwheel, electric actuator (also for seismic requirements), spur or bevel gear and by direct remote control. Gate valves with a handwheel can be equipped with a locking device.

Testing

The gate valves are tested with water (or steam at the customer's request) for strength, body tightness, operability and seat tightness depending on the operating parameters and body material. The minimum test pressure for the strength test is 1.5 times PN. Pressure-bearing welds are radiographed.

Installation

The gate valves can be installed in any position regardless of the flow direction of the working medium. It is recommended to install larger gate valves in horizontal piping with the stem vertical and the actuator on top.

Dimensions

Dimensions – handwheel operation
DN/d	PN	Dk*	V I	X	H	Z	L EN 4	L ČSN 4	kg	L EN	L ČSN	kg
65/50 65/55	63,100	320	535	1310	70	75	290	340	71	290	360	58
	160						360	360	75	360
	250						425	425	78
80/75	63,100	400	710	1560	91	100	310	360	110	310	450	95
	160						390	390	115	450
	250						470	470	123
100/75	63,100	400	710	1560	91	100	350	400	118	350	450	96
	160						450	450	125	450
	250						550	650	135
125/110	63,100	500	920	1820	127	140	400	450	270	400	550	233
	160						525	625	280	550
	250						650	650	292
150/110	63,100	500	920	1820	127	140	450	500	278	450	550	230
	160						600	600	297	550
	250						750	750	315
175/125	63,100	630	1105	2105	155	165	-	-	-	550	650	435
	160						-	-		650
	250						-	-
175/150 200/150	63,100	630	1120	2120	155	180	550	600	503	550	650	425
	160						750	750	542	650
	250						950	950	572
225/175	63,100	710	1390	2540	186	220	-	-	-	650	700	718
	160						-	-		700
	250						-	-
250/200	63,100	710	1455	2855	205	240	650	700	956	650	800	831
	160						900	900	1025	800
	250						1150	1150	1079
275/200	63,100	710	1455	2855	205	240	-	-	-	750	850	837
	160						-	-		850
	250						-	-
250/225	63,100	800	1619	3120	235	260	-	-	-	650	800	1020
	160						-	-		800
	250						-	-
275/225 300/225	63,100	800	1619	3120	235	260	750	800	1183	750	900	1020
	160						1050	1050	-	900
	250						-	-	-
300/250	63,100	-	-	-	210	290	750	800	-	750	1000	-
	160						1050	1050	-	1000
	250								-
350/275	63,100	-	-	-	285	310	-	-	-	850	1000	-
	160						-	-		1000
	250			-			-	-	-
400/275	63,100	-	-	-	285	310	-	-	-	950	1000	-
	160						-	-	-	1000
	250			-			-	-	-

Dimensions – handwheel operation via gearbox (bevel / spur gear)
DN	PN	Bevel gear – S43 1x6							Spur gear – S43 1x2
DN	PN	S43 1x6							S43 1x2
		type	R	d 5	V 51	V 52	X 5	kg	type	A 6	Ød	V 6	X 6	kg
65/50 65/55	63,100	GK14.2	174	20	580	668	1500	74,5	GST14.1	240	18/29	716	1550	88
	160
	250
80/75 100/75	63,100	GK14.2	174	20	719	807	1800	121	GST14.1	240	18/29	855	1850	133
	160
	250
125/110 150/110	63,100	GK14.2	174	20	902	990	2000	257	GST14.1	240	18/29	1038	2050	269
	160
	250	GK16.2	234	30	915	1004	2000	268	GST16.1	300	18/29	1063	2060	283
175/125	63,100	GK16.2	234	30	1027	1116	2200	467	GST16.1	300	18/29	1175	2260	481
	160
	250
175/150 200/150	63,100	GK16.2	234	30	1063	1152	2200	456	GST16.1	300	18/29	1211	2260	471
	160
	250	GK25.2	306	30	1078	1184	2200	491	GST25.1	360	29/35,5	1293	2300	517
225/175	63,100	GK16.2	234	30	1248	1437	2600	776	GST16.1	300	18/29	1396	2600	791
	160	GK25.2	306	30	1263	1469	2700	811	GST25.1	360	29/35,5	1478	2750	837
	250
250/200 275/200	63,100	GK16.2	234	30	1348	1537	2800	863	GST16.1	300	18/29	1496	2800	1064
	160	GK25.2	306	30	1363	1569	2830	907	GST25.1	360	29/35,5	1578	2850	1146
	250
250/225 275/225 300/225	63,100	GK25.2	306	30	1487	1693	3020	1073	GST25.1	360	29/35,5	1702	3050	1323
	160	GK30.2	528	40	1544	1754	3060	1141	GST30.1	380	29/35,5	1707	3050	1328
	250
300/250	63,100	GK25.2	306	30	1648	1854	3160	1528	GST30.1	380	29/35,5	1863	3200	1767
	160
	250	GK30.2	528	40	1703	1893	3200	1578
350/275 400/275	63,100	GK25.2	306	30	1920	2126	3676	2940	GST30.1	380	29/35,5	2135	3500	2993
	160	GK30.2	528	40	1975	2165	3715	2898
	250

Gearbox parts (see drawing below)
Pos.	Part identification	Material – standard
260	Shaft joint	ON 13 3123
131	Washer	ČSN 02 1741.10
127	Transmission	AUMA GST / GK
125	Insulating ring	TEMAPLUS
123	Washer	ČSN 02 1740.10
118	Screw	ČSN EN ISO 4017
117	Screw	ČSN EN ISO 4762
107	Connector	C 35
105	Flange	P 285NH
104	Bridge	GC-17CrMo55-P 285NH

Dimensions – ZPA Pečky electric actuator (MODACT MON)
DN	PN	MODACT MON
		motor	A 1	B 1	V 1	X 1	kg
65/50 65/55	63,100	52031	436	228	808	1590	100
	160
	250
80/75 100/75	63,100	52031	436	228	947	1800	145
	160
	250
125/110 150/110	63,100	52032	436	228	1130	2030	285
	160
	250	52033	519	258	1187	2090	337
175/125	63,100	52033	519	258	1299	2300	529
	160
	250	52034	519	258	1299	2300	536
175/150 200/150	63,100	52033	519	258	1355	2360	522
	160	52034	519	258	1355	2360	526
	250	52035	598	298	1395	2400	535
225/175	63,100	52033	519	258	1520	2670	842
	160	52035	598	298	1580	2730	969
	250
250/200 275/200	63,100	52034	519	258	1622	2890	932
	160	52035	598	298	1680	2940	1055
	250
250/225 275/225 300/225	63,100	52035	598	298	1804	3130	1221
	160	52036	665	298	2071	3400	1329
	250	52036	665	298	2071	3400
300/250	63,100	52036	665	298	2225	3625	1970
	160
	250	-	-	-	-	-	-
350/275 400/275	63,100	-	-	-	-	-	-
	160	-	-	-	-	-	-
	250

Dimensions – AUMA electric actuator
DN/d	PN	B	C	D	H	L	V1	123P
								kg
65/50	320 ÷ 400	420	230	122	85	360	815	150
65/55								150
80/55								150
100/55								150
80/75		195	450	160	125	450	1240	335
100/75								340
100/80								340
125/80								345
150/80								355
125/100		195	450	185	140	500	1280	405
150/100								410
125/100*		510	355	185	140	500	1040	265
150/100*								410
125/125		140	510	240	180	600	1560	824
150/125								830
175/125								835
200/125								840
175/150		350	530	255	210	650	1785	1175
200/150								1185
225/150								1195
200/175		247	630	280	235	650	1935	1280
225/175								1300
250/175								1320
250/200		247	630	300	255	800	2230	1560
275/200								1580
250/225		225	660	350	270	900	2450	2000
275/225								2020
300/225								2040
300/250		250	695	406	300	1000	2700	3760
350/275		250	1005	465	330	1000	3020	3850
350/300		250	1005	465	330	1200	3100	3900
400/300		250	1005	512	330	1200	3100	4050
400/350				512	390	1200	3500	4200

Connection

Butt-welded and flanged according to ČSN, DIN, ANSI and GOST standards. The gate valves can be supplied with electric actuators from ZPA Pečky, Regada, AUMA, Rotork, Schiebel and other manufacturers.

Comparison table of Czech and EN materials

Comparison table of Czech and EN materials
Czech material class	CSN standard	W.Nr	EN material class
11 416	ČSN 41 1600	1.0425	P 265 NH
15 128	ČSN 41 5128	1.7715	14 MoV6-3
17 119	ČSN 41 7119	1.4903	X10CrMoVNb9-1
17 246, 17 248	ČSN 41 7246 (48)	1.4541	X6CrNiTi18-10
15 020	ČSN 41 5020	1.5415	16Mo3
15 121	ČSN 41 5121	1.7335	13CrMo4-5

Documentation

Operating parameters

Operating parameters – PN (bar) depending on temperature (°C) and body material
PN	Temperature (°C)
PN	20	200	250	300	350	400	450	500	520	540	560	580	600	610	620	630	640	650
11 416
63	6,3	6,3	5,5	4,8	4,1	3,5	2
100	10	10	8,8	7,6	6,5	5,6	3,2
160	16	16	14,1	12,2	10,5	9	5,1
250	25	25	22,0	19,1	16,4	14,2	8,1
320	32	32	28	25	21	18	15
400	40	40	35	31	26	23	18
C22.8
63	6,3	5,6	4,9	4,2	3,6	2,9	2,1
100	10	8,9	7,8	6,6	5,8	4,6	3,4
160	16	14,3	12,5	10,6	9,2	7,4	5,5
250	25	22,4	19,5	16,6	14,4	11,5	8,7
320	32	28,7	25,0	21,3	18,5	14,8	11,1
400	40	35,9	31,3	26,6	23,1	18,5	13,9
P 285 NH
63	6,3	5,4	4,7	3,6	2,9	2,2	-
100	10	8,5	7,4	5,7	4,5	3,4	-
160	16	13,6	11,9	9,1	7,2	5,5	-
250	25	21,3	18,6	14,2	11,3	8,6	-
15 128
63	6,3							6,1	5,2	4,4	2,8
100	10							9,8	8,2	7,0	4,5
160	16							15,6	13,3	9,0	7,2
250	25							24,4	20,7	14,0	11,3
320	32							31	24	19	15
400	40							39	30	23	18
16Mo3 / 15Mo3
63	6,3		6,0	5,2	5,1	4,9	4,7	3,3	2,1
100	10		9,5	8,4	8,1	7,8	7,5	5,3	3,4
160	16		15,3	13,4	12,9	12,5	12	8,6	5,4
250	25		23,9	21	20,2	19,5	18,8	13,4	8,5
320	32		31	27	26	25	24	17	11
400	40		38	34	33	31	30	22	14
13CrMo4-5
63	6,3				6,0	5,8	4,6	4,1	2,8	1,8	1,2
100	10				9,5	9,2	8,7	7,9	5,4	3,5	2,3
160	16				15,3	14,8	14,3	12,7	8,7	5,6	3,7
250	25				23,9	23,1	22,4	19,8	13,6	8,8	5,8
320	32				31	30	28	27	17	11	7,4
400	40				38	37	35	34	22	14	9,3
10CrMo9-10
63	6,3							4,9	3,7	2,8	2,1	1,6	1,2
100	10							7,8	5,9	4,5	3,3	2,5	1,9
160	16							12,5	9,5	7,2	5,3	4,0	3,1
250	25							19,5	14,9	11,3	8,4	6,3	4,9
320	32							25	20	15	11	8,2	6,3
400	40							32	25	18	14	10	7,9
X10CrMoVNb9-1
63	6,3										5,2	4,2	3,2
100	10										8,4	6,6	5,2
160	16										13,4	10,6	8,3
250	25										21	16,6	13
320	32										28	22	17
400	40										35	28	22
X6CrNiTi18-10
63	6,3	5,7	5,3	5	4,7	4,6	4,4	4,3	4,3	4,3	4,3	3,9	3,1
100	10	9,0	8,4	7,9	7,5	7,2	7,0	6,9	6,9	6,8	6,7	6,2	5
160	16	14,4	13,4	12,6	12,0	11,6	11,3	11,0	11,0	10,9	10,8	9,9	8
250	25	22,4	21,0	19,7	18,8	18,1	17,5	17,3	17,3	17,2	17,1	15,5	12,5
X10CrWMoVNb9-2
320	32										32	26	21	19	16	14	12	10
400	40										40	33	26	23	20	17	15	13

Materials of main parts

Materials of main parts by operating temperature (°C)
Pos.	Part identification	Operating temperature (°C)
Pos.	Part identification	450		530	550	560	570	600	650
002	Body	P 250 GH P 285 NH 11 416	15NiCuMoNb5	16Mo3	13CrMo4-5	10CrMo9-10 15 128		X10CrMoVNb9-1	X10CrWMoVNb9-2
003	Extender
004	Seat	P250GH P 285 NH 11 416
014	Pressure seal bonnet			10CrMo9-10			10CrMo9-10
039	Segmented ring
038	Spacer ring
017	Wedge
030	Wedge guide	S355J2G3 11 523	21CrMoV5-7,10CrMo9-10				X10CrMoVNb9-1
040	Plate	P250GH	10CrMo9-10,15 128
041	Pressure seal nut	E335,11 600					10CrMo9-10
015	Stem	X39CrMo17,17 134					X22CrMoV12-1
036	Housing	X6CrNiTi18-10
012	Yoke	10CrMo9-10,15 128
013	Sealing cover	GS-17CrMo5-5,42 27 44
033	Stem nut	P250GH, bronze alloy
042	Bearing nut	P250GH,P 285 NH,11 416
053	Sealing ring	Expanded graphite
054	Sealing ring

Other

Protection of the inner part of the gate valve body

In some piping systems, after the system has been shut down and has cooled, a certain amount of water may remain in the central part of the closed gate valve, i.e. in the space above the wedge.

If such a gate valve is later heated in the closed state via the bypass, the rising temperature causes a simple physical phenomenon: the pressure between the wedge discs and in the space above them (the so-called chamber) increases.

If the situations described above may occur during valve operation, the order must specify the supply of a gate valve with protection of the inner part of the body.

Design of this protection

Drilling through one wedge disc, connecting the central part with the inlet end. This is the simplest solution. For use as a unidirectional valve only. The flow direction must be marked.
Connecting the bypass to the central part – a relatively simple and effective solution. Used for all bypasses consisting of at least two valves, between which the connection is located. This applies to all gate valves of DN 200 and larger. Depending on the flow, one valve must always be open.
Relief valve located at the end of a pipe led out of the gate valve chamber. Although it is the most expensive, it is a fully universal solution applicable to all gate valves and all operating parameters. The relief pressure setting must be specified in the order.

Hotline

Do you need advice on choosing a valve, want to order spare parts or need a service visit? Call or write to us – our engineers and sales staff will be happy to help and propose the most suitable solution.

+420 739 242 148

info@mostro.cz