Ball Valve Trunnion Mounted - S30T Series | Sirca
Ball Valve Trunnion Mounted - S30T Series | Sirca

Ball Valve Trunnion Mounted - S30T Series | Sirca

Sirca S30T Trunnion-Mounted Ball Valve

The Sirca S30T is a full-bore, trunnion-mounted ball valve for on/off isolation in high-pressure liquid and gas pipelines. The ball is mechanically supported by the stem and lower trunnion, while spring-loaded seats maintain contact with the ball. This arrangement reduces operating torque compared with floating-ball designs at large sizes and high differential pressures.

Technical Data

  • Size range: 1″–24″, DN25–DN600

  • Pressure classes: ASME Class 150, 300, 600, 900, 1500 and 2500

  • Maximum pressure at temperatures below 38 °C: 20–420 bar, depending on pressure class

  • Standard temperature range: −29 to +200 °C

  • Design: API 6D / ISO 14313

  • Face-to-face: API 6D, ASME B16.10 and EN 558-1

  • Testing: API 6D and API 598

  • End connections: RF; optional RTJ or butt-weld ends

  • Shut-off: zero visible leakage.

Construction and Sealing

The forged, split-and-bolted body is available in ASTM A350 LF2 carbon steel, ASTM A479 F316L stainless steel or carbon steel with stainless-steel trim. Standard seat inserts are Delrin, with Inconel X-750 springs, graphite secondary seals and AED-resistant elastomer O-rings.

The anti-blowout stem and antistatic device provide mechanical retention and electrical continuity. Bleed and drain connections support cavity depressurisation and maintenance operations.

Seat Configurations

Single Piston Effect: standard self-relieving seats discharge excessive body-cavity pressure back into the pipeline.

Double Piston Effect: optional seats provide sealing against pressure from both the pipeline and body cavity. An external pressure-relief device is required to prevent trapped cavity overpressure.

Actuation and Applications

Actuation options include manual gearbox, pneumatic, electric or hydraulic actuators. Typical services include natural-gas transmission, crude oil and refined products, petrochemical plants, compressor stations and high-pressure process lines.

Compliance

The S30T is designed for PED 2014/68/EU and ATEX 2014/34/EU applications. Fire-safe design is referenced to API 607, ISO 10497 and API 6FA.

Standard (Options)
  • ANSI
Connection (Options)
  • Flanged
Material (Options)
  • ASTM A350 LF2
  • ASTM A479 Type 316L
Pressure Rating (Options)
  • 150 lbs
  • 300 lbs
  • 600 lbs
  • 900 lbs
  • 1500 lbs
  • 2500 lbs

Datasheet and documents

Description

Flanged ball valves S30T series.

Type: Trunnion ball valves

Size Range: 1” ÷ 24” (DN25 ÷ DN600)

Valve complying with: Design: API 6D (ISO14313)

Raised face: ASME B16.5, EN 1092-1

Face to Face: API 6D, ASME B16.10, EN 558-1

Testing: API 6D, API 598

Design FIRE SAFE API 607, ISO 10497, API 6FA

Standard design temperature: -29 °C ÷ +200 °C  (-20,2 °F ÷ +392 °F)

Pressure class: ANSI150 – 300 – 600 – 900 – 1500 – 2500

Max working pressure: 20 bar for class ANSI150

(at temperature below 38°C, 50 bar for class ANSI300

in according to ASME B16.34) 100 bar for class ANSI600

150 bar for class ANSI900

250 bar for class ANSI1500

420 bar for class ANSI2500

Leakage class: NO leakage

Flange drilling: Standard complying with ASME B16.5

On request with EN1092-1

Type end: Standard:    RF   (Raised Face ASME B16.5)

On request: RJ   (Ring Joint ASME B16.5)

                    BW  (But Welding ASME B16.25)

Standard Certifications: PED 2014/68/UE

ATEX 2014/34/UE

Additional certifications: EAC TR-CU 10, TR-CU 32

Construction

Standard features

  1. Standard double block sealing performance.
  2. Full die forged structure for all pressure containing parts.
  3. Flanged valves are provided with flanged integral with closure member.
  4. Standard primary gasket design is OR AED type, secondary emergency seal always provided for fire-safe purpose.
  5. High quality stem gasket for reliable tightness and low emission performance.
  6. Use of low seat-ball friction materials and surface finish for reliable sealing and long service life.
  7. Best-in-Class CV values.
  8. Standard split & bolted design for body-closure connection.
  9. Low operation torque design.
  10. Static conduction spring is used as standard between the stem and the ball (Antic-Static Device).
  11. Anti blow-out proof stem design.
S30T_Trunnion_sezionato

Piston effect principle (both applicable for all range)

STANDARD SINGLE PISTON EFFECT

In the standard design of Trunnion Mounted Ball Valves, each seat ring performs the “Single Piston” action. In this case the pressure acting on the external side of the seat ring pushes it against the ball while the pressure acting on the internal side of the seat rings pushes it away from the ball. Therefore, while both seat-rings grant the required tightness, when the pressure is applied on their external side, they are defined “Self Relieving”, allowing any over pressure acting in the body cavity to be discharged in the line as soon as the force caused by the pressure overcomes the one provided by the springs.

STANDARD SINGLE PISTON EFFECT

OPTIONAL DOUBLE PISTON EFFECT

On request the seat rings design may be modified to perform the “Double Piston Effect” action. In this case the pressure acting on both the external and internal side of the seat rings, results in a force pushing it against the ball, therefore each seat ring grants the required tightness even if the pressure is applied in the body cavity. This features assures dead-tight sealing simultaneously on both sides of the ball and in order to release any possible over-pressure which develops the body cavity it is necessary to use an external safety relief valve.

OPTIONAL DOUBLE PISTON EFFECT

Materials

pag-4-Bill-of-material
Bill of material: (Standard materials configurations)
ItemComponentsCarbon SteelStainless SteelC.S. with S.S. TrimQ.ty
1BodyASTM A350 LF2ASTM A479 gr F316LASTM A350 LF21
2Closure/BonnetASTM A350 LF2ASTM A479 gr F316LASTM A350 LF22
3BallASTM A350 LF2 + E.N.P.ASTM A479 gr F316LASTM A479 gr F316L1
4StemASTM A564 gr 630ASTM A479 gr 316LASTM A479 gr 316L1
5SeatASTM A350 LF2 + E.N.P.ASTM A479 gr 316LASTM A479 gr 316L2
6InsertDELRINDELRINDELRIN2
7Bearing retainerASTM A515 gr 70ASTM A479 gr 316LASTM A479 gr 316L2
8Stuffing plateASTM A350 LF2ASTM A479 gr 316LASTM A350 LF21
9Top m0unting plateASTM A350 LF2ASTM A479 gr 316LASTM A350 LF21
10Stud boltASTM A193 B7ASTM A193 B8ASTM A193 B716
11Stud boltASTM A193 B7ASTM A193 B8ASTM A193 B716
12NutASTM A194 2HASTM A194 gr 8ASTM A194 2H32
13Body gasketGRAPHITEGRAPHITEGRAPHITE2
14Body O-ringVITON AEDVITON AEDVITON AED2
15Sliding bearingsAISI316 / PTFEAISI316 / PTFEAISI316 / PTFE2
16Thrust washerAISI316 / PTFEAISI316 / PTFEAISI316 / PTFE2
17Stem keyAISI 1040Steel PR8O (36SMnPb14)AISI 10401
18ScrewCARBOB STEEL 8.8 + N.P.STAINLESS STEELCARBOB STEEL 8.8 + N.P.1
19Sliding bearingsAISI316 / PTFEAISI316 / PTFEAISI316 / PTFE2
20Thrust washerAISI316 / PTFEAISI316 / PTFEAISI316 / PTFE2
21SpringINCONEL X-750INCONEL X-750INCONEL X-75048
22Seat gasketGRAPHITEGRAPHITEGRAPHITE2
23Seat O-ringVITON AEDVITON AEDVITON AED2
24PinSteel PR8O (36SMnPb14)STAINLESS STEELSteel PR8O (36SMnPb14)4
25Stem O-ringVITON AEDVITON AEDVITON AED2
26Stuffing plate O-ringVITON AEDVITON AEDVITON AED1
27Top plate gasketGRAPHITEGRAPHITEGRAPHITE1
28Stuffing plate gasketGRAPHITEGRAPHITEGRAPHITE1
29PinSteel PR8O (36SMnPb14)STAINLESS STEELSteel PR8O (36SMnPb14)4
30ScrewCARBOB STEEL 8.8 + N.P.STAINLESS STEEL A2.70CARBOB STEEL 8.8 + N.P.2
31ScrewCARBOB STEEL 8.8 + N.P.STAINLESS STEEL A2.70CARBOB STEEL 8.8 + N.P.2
32Valve supportASTM A515 gr 70STAINLESS STEEL AISI304ASTM A515 gr 704
33Lift plateASTM A515 gr 70STAINLESS STEEL AISI304ASTM A515 gr 704
34Stem grease injectorASTM A350 LF2 ZINC PLATEDAISI 316LASTM A350 LF2 ZINC PLATED1
35Bleeder valveASTM A350 LF2 ZINC PLATEDAISI 316LASTM A350 LF2 ZINC PLATED1
36Drain plugASTM A350 LF2 ZINC PLATEDAISI 316LASTM A350 LF2 ZINC PLATED1
NOTE: Item 10, 11, 12, 21 quantity indicated varies according to the DN and Class.
ONLY ON REQUEST
37Seat grease injectorASTM A350 LF2 ZINC PLATED2
38Check valveAISI 316L1
NOTE:
Standard valves are constructed with equal or equivalent materials to those indicated in the table.
In the case the valve is onerous particular job conditions (high temperatures, low temperatures,high pressure, particulary fluid), could be uses other suitable materials for such applications.

Dimensions

pag-6-Overall-dimensions-for-class-ANSI-150

DNABØCØDANSI 150 ASME B16.5STEMISO 5211J* (RF)Kg
mmincØEØFn°_x ØGØHLKeyØMn°_x ØN
502"1318250164150120.74 x Ø1922406 x 35F101024 x Ø1217828
803"1459574190190152.44 x Ø1922406 x 35F121254 x Ø1420355
1004"179122100244230190.58 x Ø19354510 x 40F141404 x Ø1822985
1506"218240150320280241.38 x Ø22354510 x 40F141404 x Ø18394145
2008"255269201400345298.58 x Ø22455214 x 45F161654 x Ø22457295
25010"29332025247040536212 x Ø25455414 x 50F161654 x Ø22533452
30012"331350303540485431.812 x Ø25455414 x 50F161654 x Ø22610687
35014"356370334606535476.312 x Ø29657018 x 60F161654 x Ø22686880
40016"402423385680595539.816 x Ø29657018 x 60F161654 x Ø227621035
45018"438472436755635577.916 x Ø32657018 x 60F161654 x Ø228641615
50020"49852648783070063520 x Ø32707520 x 70F252548 x Ø189142085
60024"5775945891010815749.320 x Ø358010022 x 90F252548 x Ø1810673055
* Face to Face dimension "J" in according to standard API6D class ANSI150 / ASME B16.10 class 150

pag-7-Overall-dimensions-for-class-ANSI-300

DNABØCØDANSI 300 ASME B16.5STEMISO 5211J* (RF)Kg
mmincØEØFn°_x ØGØHLKeyØMn°_x ØN
502"12782501641651278 x Ø1922406 x 35F101024 x Ø1221633
803"1469574190210168.38 x Ø2222406 x 35F121254 x Ø1428363
1004"184127.51002552552008 x Ø22354510 x 40F141404 x Ø18305110
1506"21821515032032027012 x Ø22354510 x 40F141404 x Ø18403180
2008"261289201415380330.212 x Ø25455014 x 45F161654 x Ø22502345
25010"293318252470445387.416 x Ø29455514 x 50F161654 x Ø22568540
30012"330355303540520450.816 x Ø32455514 x 50F161654 x Ø22648785
35014"356393334608585514.420 x Ø32657018 x 60F161654 x Ø227621025
40016"402440385685650571.520 x Ø35657018 x 60F161654 x Ø228381465
45018"451484436770710628.624 x Ø35808522 x 80F252548 x Ø189141790
50020"490536487860775685.824 x Ø35808522 x 80F252548 x Ø189912285
60024"6006555891032915812.824 x Ø4210015528 x 150F353568 x Ø3311433720
* Face to Face dimension "J" in according to standard API6D class ANSI300 / ASME B16.10 class 300

pag-8-Overall-dimensions-for-class-ANSI-600

DNABØCØDANSI 600 ASME B16.5STEMISO 5211J* (RF)Kg
mmincØEØFn°_x ØGØHLKeyØMn°_x ØN
502"12782.5501651651278 x Ø1922406 x 35F121254 x Ø1429238
803"15910474210210168.38 x Ø22354510 x 40F141404 x Ø1835673
1004"124127.5100255275215.98 x Ø25354510 x 40F141404 x Ø18432132
1506"221230150337355292.112 x Ø29455014 x 45F161654 x Ø22559290
2008"268298201430420349.212 x Ø32455514 x 50F161654 x Ø22660510
25010"298337252485510431.816 x Ø35657018 x 65F161654 x Ø22787760
30012"32935630356056048920 x Ø35657018 x 65F161654 x Ø228381030
35014"37543933462460552720 x Ø38808522 x 80F252548 x Ø188891230
40016"438475385750685603.220 x Ø41808522 x 80F252548 x Ø189911590
45018"49548943684774565420 x Ø45808522 x 80F252548 x Ø1810922260
50020"551587487930815723.924 x Ø458011022 x 100F252548 x Ø1811942570
60024"6456535891122940838.224 x Ø4810015528 x 150F353568 x Ø3313974725
* Face to Face dimension "J" in according to standard API6D class ANSI600 / ASME B16.10 class 600

Certificates

TUVUNI EN ISO 9001:2015 Certified Quality System