Ductile iron butterfly valve 1157 wafer CF8M disc/Silicone seat DN250

The 1157 series valve is a TTV wafer butterfly valve, with a ductile iron body, silicone seat and stainless steel disc, suitable for isolating or regulating high-temperature networks, oils, acids, air or inert gas, and sodium hydroxide.

TTV is a worldwide renowned company focused on three major aspects in making its products: design, production, and quality. Continuous technical innovations are key to the brand's valves high reliability.

We offer an extended range of concentric butterfly valves made by TTV. We keep DN32-40 to DN600 diameters in stock. Some references are also available depending on factory production time, up to DN2000.

A great variety of materials available

Depending on intended uses, TTV provides concentric butterfly valves made up of a great number of different materials:


  • Bodies: GGG50 ductile iron, also called SG iron or nodular cast iron (EN-GJS-500-7), Rilsan coated

  • Seats: EPDM, high-temperature EPDM, NBR, white NBR, carboxylated NBR, FKM, silicone, food-grade silicone, or even Teflon®

  • Discs: CF8M stainless steel, polished CF8M stainless steel, Teflon® coated stainless steel, EN-GJS-500-7 iron coated with Epoxy or Rilsan, aluminium bronze

Technical characteristics of TTV concentric butterfly valves

TTV concentric butterfly valves do have major technical advantages:


  • Lever or manual gear with limit switches or bare shaft above DN300

  • Locking device with notched pad

  • Square driven stem and ISO 5211 pad for direct mounting of an actuator

  • Connections available: PN10/16 or PN25 flanged, ANSI 150

  • wafer type or lug type

Moreover, several elements ensure the valves solidity:


  • Full crossing stem

  • Dovetail seat for perfect retaining

  • Disc held by striated stem preventing mechanical slacks

Fields of application

Thanks to the wide variety of materials used to make discs and seats, TTV concentric butterfly valves can be adapted for numerous sensitive and different applications as far as fluids and temperatures are concerned. For instance, they can be used for specific applications such as food products, abrasive and powdery products, marine applications (shipbuilding and offshore construction), or even gas systems.

Certifications

All of TTV butterfly valves are EC certified. Most of them have Bureau Veritas or ABS Marine agreement as well. Some models also have the ACS (French sanitary certificate) and FDA (American Food and Drug Administration) certifications.


Details
Option certificate 3.1Yes
DN inches NPS10''
Construction standardISO 10631 - EN 593
CE risk categoryIII Module H
Type of paintRilsan
Paint coating thickness (µm)250.00
EN face-to-face standardEN 558 Series 20
DIN face-to-face standardDIN 3202 Part.3 Series K1
ISO face-to-face standardISO 5752 Series 20
BrandTTV
Tightness test standardEN 12266-1 Rate A
Type of seatRemovable
Opening deviceHandle
ApplicationIndustry
ATEX atmosphereGroup II Cat. 2G/2D
Shaft/stem matérialStainless steel AISI 304
Square, star (mm)Square 19 mm
ATEX compatibleYes
Torque (Nm)360.0
DN250
Face to Face (mm)68.0
FluidHot water / Cold water / Drinking water
Kv (m³/h)3069.0
SeatSilicone
Body materialDuctile iron
Disc materialStainless steel ASTM A351 CF8M
ISO pad 5211F10
PS (bar)16
ConnectionsBetween flanges PN10/16 #150
TS max (°C)150
TS min (°C)-40
Butterfly valve designConcentric
Wafer/lugWafer
ATEX zone1 & 21. 2 & 22
Through shaftYes
Warranty period5 years
CEYes
Handle materialDuctile iron
CE ATEX-COMPATIBLE 3.1

Applications

  • Industrial Applications
  • Chemical Processing
  • Oil & Gas Industry

FAQ

What materials are used in the construction of the valve?
The valve features a ductile iron body, silicone seat, and stainless steel disc.
What is the size range available for this valve?
We offer a range of concentric butterfly valves from DN32-40 to DN600 diameters.
How is the valve installed?
The valve is designed for wafer installation, making it easy to integrate into existing piping systems.
Expert Advice: Ensure proper sealing and alignment during installation to maximize the valve's performance and longevity.

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1193 Gearbox for double offset butterfly valve

    France
  • Brand: France
  • Product Code: 1193 Gearbox for double offset butterfly valve
  • Availability: In Stock

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