BONT HTB ball valve is designed for high temperature, bubble tight service. The primary innovation of this valve resides in the seat design. It is not the usual metal to metal seat, but an original patented semi-soft seat.

HTB ball valves are fully rated as per applicable Standard, suitable for any kind of fluid compatible with graphite, highly resistant to erosion, very effective in the handling of fluids containing abrasives and any dirty media and maintenance free.

• Size 1/2" to 4" (DN 15 to DN 100)
• Design Standards:

  • ASME B16.34, B16.5

  • B16.11, B16.25

  • MSS SP 72, BS 5351

  • DIN 2401. DOM 3239

• Fire Safe: API 6FA and BS 6775 certified

• TA Luft certified

• Split three piece design

• Floating ball

• Body Seat: patented metal/graphite compound

Click here to view the Catalog (pdf)
 

• Packing: adjustable graphite long life packing

• Gland: flanged type - one piece bushing

• Stem: anti blow-out

• Antistatic device: design is intrinsically antistatic

• Torque: low torque due to special seat and packing material and design

• Every valve, even if already installed, can be automated with an actuator. Valve actuator mounting according to ISO 5211

• Connections:

  • Threaded NPT to ASME B1.20.1

  • SW to ASME B16.11

  • BW to ASME B16.25

  • BW to DIN 3239

• Flanged: According to  ASME B16.34 Class 300 and Class 600 - Flanges are supplied R.F. drilled to ASME B16.5. Face to face dimension (A) to ASME B16.10

• According to European Standards (UNI, DIN, AFNOR, etc.) PN 40 and PN 100 - Flanges are supplied raised faced to UNI 2229, drilled. Face to face dimension (A) to DIN 322-F1 and F2.

This Valve is unidirectional. Please ensure that the flow direction is the same as shown by the arrow on the body.

Temperature for continuous service up to 1022° F (550° C)

View our Technical Notes on the HTB Ball Valve available at: Severe Service Ball Valves (pdf)

• Size 1/4" to 32"
• Materials:

  • Forged Carbon Steels: A105, LF2, 60K

  • Forged Stainless & Duplex Steels: F304, F316(L), F6, 17-4PH, AISI 4140, F321, F347, F44, F51, F53, F55

  • Other Materials: Inconel, Hastelloy, Monel, Alloy 20, Sanycro 28, Titanium

  • Soft Seat & Inerts: PTFE, Nylon, HNBR, VITON, Fluoroloy, PEEK, Vespel, KEL-F, Buna N

  • Seals & Gaskets: Viton, HNBR, Graphite, SW316+Graph., Kel-F, Buna, Lip Seals.

  • Special Processes: TCC ( Tungsten Carbide Coating), C.R.A. overlays & Claddings.

  • Other Materials available upon request

• Temperatures: from -196° C up to +660° C depending on pressure and material.

• Pressures: from vacuum up to 690 bar

• Split three piece design

• Sizes: DN 50 to DN 1000, 2" to 40"

• Standard Features:

  • Design, manufacture and materials according to PED Directive

  • Design according to ASME B16.34

  • ATEX Product certificate

  • API 6D certificate

  • Fire-safe approved design API 602, 6FA

  • Single piston effect, providing self-relieving of the body cavity

  • Blow-out proof stem

  • Bi-directional flow

  • Antistatic design

  • Thermoplastic seating

• Body Materials: Forged Carbon Steel A350 LF2. Other materials on request.

• Temperature Range: -46° C to +200° C with thermoplastic seats. -46° C to 550° C (and over) with Bonetti HTL inserts

• Face-to-Face: according to API 6D

• Hydraulic and Pneumatic tests according to ASME B16.34, API 6D, API 598

Click here to view the Catalog (pdf)

Seat feature:

• Multi-layer metal/graphite seating system: each single layer guarantees an independent sealing. Damages to some layers do not affect the sealing capacity of the others.

• Zero leakage "bubble tight" shut-off due to machining accuracy, low tolerances, multiple lamination and the resilient metal/graphite to metal sealing that allows severe differential expansions and self-compensation for high differential temperatures between ball and seat without affecting the perfect tightness of the valve.

• Low torque operation is guaranteed both by the resilience of the multi-layer seat ring as well as by the self-lubrication of the graphite. A smaller actuator size and lower torque is needed to operate the valve.

• Intrinsically fire-safe design thanks to seat components that are non-combustible, making the HTL equipped valves fire-safe. The valve performance will not change in case fire should occur outside or inside the valve.

• The high resistance to erosive media containing abrasive particles, yields perfect sealing with practically endless valve life, even after hundreds of thousands of operating cycles.