Floating Ball Valve

Short Description:

FLOATING BALL VALVE Standard Design & Manufacturing Standard:API 6D,ASME B16.34,API 608,BS 5351 Face to face:ASME B16.10,API 6D,DIN 3202,BSEN 558 Flange Connection Size:ASME B16.5,BSEN 1092 Testing and inspection: API598,API6D 1. Special Seat Design The floating ball valve adopts the design of flexible seal ring structure. When the medium  pressure is lower, the contact area of seal ring and ball is smaller. so higher sealing ratio is formed at the place where the seal ring and ...


Product Detail

Materials

Product Tags

FLOATING BALL VALVE

Standard

Design & Manufacturing Standard:API 6D,ASME B16.34,API 608,BS 5351

Face to face:ASME B16.10,API 6D,DIN 3202,BSEN 558

Flange Connection Size:ASME B16.5,BSEN 1092

Testing and inspection: API598,API6D

1. Special Seat Design

The floating ball valve adopts the design of flexible seal ring structure. When the medium  pressure is lower, the contact area of seal ring and ball is smaller. so higher sealing ratio is formed at the place where the seal ring and ball contact to ensure reliable sealing. When the medium pressure is higher, the contact area of seal and ball becomes bigger along with the elastic deformation of seal ring, so the seal ring can endure higher medium thrust without being damaged.

2. Fireproof Structure Design

In case of fire during the use of valve, the seat ring made of PTFE or other non-metal materials will be decomposed or damaged under high temperature and cause higher leakage. The fireproof seal ring is set between ball and seat so that after the valve seat is burnt, the medium will push the ball rapidly towards the downstream metal seal ring to form the auxiliary metal to metal sealing structure, which can effectively control valve leakage. In addition, the middle flange sealing gasket is made of metal wound gasket, which can ensure sealing even under high temperature. The fireproof structure design of floating ball valve conforms to requirements in API 607,spi 6FA,BS 6755 and other standards.

3. Reliable Sealing Of Valve Stem

The stem is provided with the shoulder at its bottom so that it will not be blown out by the medium even under the extreme conditions such as abnormal pressure rise inside the valve cavity, failure of gland plate and etc. In addition, to avoid leakage after the stem packing is burnt in case of fire, the thrust bearing is set at the place where the stem shoulder and body contact to form a reverse sealing seat. The sealing force of the reverse seal will increase according to the increase of medium pressure, so as to ensure reliable stem sealing under various pressure, prevent leakage and avoid accident spreading.

The stem adopts V type packing sealing structure. The V type packing can effectively change the pressing force and medium force of the gland into the sealing force of the stem.

According to user requirements, the disc spring loaded packing pressing mechanism can be adopted to make the sealing of stem packing more reliable.

4. Anti-static Structure

The ball valve is provided with anti-static structure and adopts the static electricity discharge device to directly form a static channel between the ball and body or form a static channel between the ball and body through the stem, so as to discharge the static electricity produced due to friction during the opening and closing of ball and seat through the pipeline, avoiding fire or explosion that may be caused by static spark and ensuring system safety.

5. Lock And Misoperation Prevention

The manual ball valve can be locked by a lock when it is at the full open or full close position. The 90°open and close positioning piece with lock hole is designed to avoid valve misoperation caused due to handle operation by non-opearators, and it can also prevent valve opening or closing, or other accidents caused by pipeline vibration or unpredictable factors. It is very effective especially for inflammable factors. It is very effective especially for inflammable and explosive oil, chemical and medical working pipelines or field tubing. The part on the head of the stem that is installed with the handle adopts flat design. When the valve is opened, the handle is parallel to the pipeline, so that the opening and closing indications of the valve are guaranteed to have no error.


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  • Newsway Valves Materials

    NSW valve body and trim material can be offered in Forged type and Casting type. Next to stainless and carbon steel material, we also manufacture valves in special materials such as titanium, nickel alloys, HASTELLOY®*, INCOLOY®, MONEL®, Alloy 20, super-duplex, corrosion resistant alloys and urea grade materials.

    Available materials

    Tradename UNS nr. Werkstoff nr. Forging Casting
    Carbon steel K30504 1.0402 A105 A216 WCB
    Carbon steel   1.046 A105N  
    Low Temp Carbon steel K03011 1.0508 A350 LF2 A352 LCB
    High Yield steel K03014   A694 F60  
    3 1/2 Nickel steel K32025 1.5639 A350 LF3 A352 LC3
    5 Chrome, 1/2 Moly K41545 1.7362 A182 F5 A217 C5
    1 1/4 Chrome, 1/2 Moly K11572 1.7733 A182 F11 A217 WC6
      K11597 1.7335    
    2 1/4 Chrome, 1/2 Moly K21590 1.738 A182 F22 A217 WC9
    9 Chrome, 1 Moly K90941 1.7386 A182 F9 A217 CW6
    X 12 Chrome, 091 Moly K91560 1.4903 A182 F91 A217 C12
    13 Chrome S41000   A182 F6A A351 CA15
    17-4PH S17400 1.4542 A564 630  
    254 SMo S31254 1.4547 A182 F44 A351 CK3MCuN
    304 S30400 1.4301 A182 F304 A351 CF8
    304L S30403 1.4306 A182 F304L A351 CF3
    310S S31008 1.4845 A182 F310S A351 CK20
    316 S31600 1.4401 A182 F316 A351 CF8M
      S31600 1.4436    
    316L S31603 1.4404 A182 F316L A351 CF3M
    316Ti S31635 1.4571 A182 F316Ti  
    317L S31703 1.4438 A182 F317L A351CG8M
    321 S32100 1.4541 A182 F321  
    321H S32109 1.4878 A182 F321H  
    347 S34700 1.455 A182 F347 A351 CF8C
    347H S34709 1.4961 A182 F347H  
    410 S41000 1.4006 A182 F410  
    904L N08904 1.4539 A182 F904L  
    Carpenter 20 N08020 2.466 B462 N08020 A351 CN7M
    Duplex 4462 S31803 1.4462 A182 F51 A890 Gr 4A
    SAF 2507 S32750 1.4469 A182 F53 A890 Gr 6A
    Zeron 100 S32760 1.4501 A182 F55 A351 GR CD3MWCuN
    Ferralium® 255 S32550 1.4507 A182 F61  
    Nicrofer 5923 hMo N06059 2.4605 B462 N06059  
    Nickel 200 N02200 2.4066 B564 N02200  
    Nickel 201 N02201 2.4068 B564 N02201  
    Monel® 400 N04400 2.436 B564 N04400 A494 M35-1
    Monel® K500 N05500 2.4375 B865 N05500  
    Incoloy® 800 N08800 1.4876 B564 N08800  
    Incoloy® 800H N08810 1.4958 B564 N08810  
    Incoloy® 800HT N08811 1.4959 B564 N08811  
    Incoloy® 825 N08825 2.4858 B564 N08825  
    Inconel® 600 N06600 2.4816 B564 N06600 A494 CY40
    Inconel® 625 N06625 2.4856 B564 N06625 A494 CW 6MC
    Hastelloy® B2 N10665 2.4617 B564 N10665 A494 N 12MV
    Hastelloy® B3 N10675 2.46 B564 N10675  
    Hastelloy® C22 N06022 2.4602 B574 N06022 A494 CX2MW
    Hastelloy® C276 N10276 2.4819 B564 N10276  
    Hastelloy® C4 N06455 2.461 B574 N06455  
    Titanium GR. 1 R50250 3.7025 B381 F1 B367 C1
    Titanium GR. 2 R50400 3.7035 B381 F2 B367 C2
    Titanium GR. 3 R50550 3.7055 B381 F3 B367 C3
    Titanium GR. 5 R56400 3.7165 B381 F5 B367 C5
    Titanium GR. 7 R52400 3.7235 B381 F7 B367 C7
    Titanium GR. 12 R53400 3.7225 B381 F12 B367 C12
    Zirconium® 702 R60702   B493 R60702  
    Zirconium® 705 R60705   B493 R60705  

     

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