Gas Ball Valve KH122G

Sizes: DN15 – DN200

Case material: Cast steel 1.0619

Certificates: DVGW-Gas, TA-Luft, PED, Fire-Safe Design

Operations: Electric, pneumatic (double-acting and single-acting), hand lever
3-way flanged ball valve KL112/KT112

Sizes: DN15 to DN100

Flange connection: PN10, PN16, PN40

Operations: Electric, pneumatic double-acting & single-acting, lever

Port: L & T type

Produktübersicht

Flanged Ball Valves: Quarter-Turn Shut-Off with Bolted Connections

A flanged ball valve isolates the flow by rotating a bored ball through 90 degrees inside the body. The flanged connection bolts the valve to the counter-flanges with a gasket in between. This means the valve can be removed and replaced without any cutting or welding. Consequently, the flanged design is standard wherever maintenance access, high pressures or large nominal sizes demand a secure bolted joint.

Fergo carries the KH155 and KH156 series in stainless steel 1.4408 and steel 1.0619, the KH120 in ductile iron GGG40, and the DVGW-approved KH121 for gas service. Nominal sizes range from DN15 to DN200, and pressure ratings span DIN PN10, PN16, PN25, PN40, PN63, PN100 as well as ASME B16.5 Class 150. Face-to-face lengths follow EN 558-1 in series 1 (F1), 14 (F4), 15 (F5) and 27, while actuator flanges comply with ISO 5211. Additionally, versions with a duplex shaft in 1.4462 cover severe-service requirements at PN40.

Flanged ball valves serve chemical and petrochemical plants, power generation, oil and gas, water supply, food production and HVAC installations across Europe. Operators choose between a hand lever, a gearbox, a pneumatic actuator or a J4C electric actuator. For pipework that requires a screwed connection rather than flanges, the threaded ball valve range offers a compact alternative.

Subcategories: Flanged Ball Valves by Design

01 2-Way Flanged Ball Valves (KH155, KH120, KH121)

The 2-way flanged ball valves provide standard on/off isolation for liquids and gases. The KH155 is available in stainless steel 1.4408 or steel 1.0619 with a TFM1600 seat and covers DN15 to DN200 at PN16/40. The KH120 uses a ductile iron GGG40 body paired with a hollow stainless steel ball in 1.4301 for water, oil and gas duties. The KH121 additionally holds DVGW gas approval to DIN EN 13774. All three feature a two-piece body, full bore and blow-out-proof stem.

02 Compact Flanged Ball Valves (KH156)

The compact ball valve KH156 reduces the overall length to between 42 and 150 mm, depending on size. This design therefore fits tight pipe sections where a standard face-to-face length cannot be accommodated. Despite its shorter body, the KH156 retains a stainless steel 1.4408 housing, TFM1600 seat and full certification to TA-Luft, Fire Safe, ATEX and AD2000-A4. Sizes run from DN15 to DN150 at PN10/16/40.

03 3-Way Flanged Ball Valves

The 3-way flanged ball valves divert, mix or switch media streams between three ports. An L-bore directs flow between two paths, whereas a T-bore opens an additional through position for mixing or simultaneous distribution. These valves therefore suit bypass circuits, blending stations and changeover manifolds. Available with hand lever, pneumatic or electric actuation.

Materials in Detail: Specifying the Right Flanged Ball Valve

Body Materials

1. Stainless Steel 1.4408 / CF8M (AISI 316)

Application: chemical and pharmaceutical processing, food and beverage plants, marine and offshore, chloride-rich media, hygienic service

Temperature: −29 °C to +175 °C with a TFM1600 seat · PN16 to PN40

Advantages: high corrosion resistance through molybdenum, dimensionally stable under bolt load, long and low-maintenance service life

Limitations: higher material cost; not resistant to hydrofluoric acid

2. Steel 1.0619 and ASTM A350 LF2

Application: hydrocarbons, process gases, steam, petrochemical and refinery service; A350 LF2 for cryogenic duty down to −46 °C

Temperature: −46 °C to +200 °C (grade dependent)

Advantages: high mechanical strength, economical for large bores, proven in Fire Safe and high-pressure designs

Limitations: no inherent corrosion resistance; unsuitable for acids, alkalis or chloride media

3. Ductile Iron GGG40 / EN-GJS-400-15 (KH120, KH121)

Application: water supply, gas distribution, oil service, general utility pipework; KH121 with DVGW gas approval

Temperature: up to +120 °C (seat dependent) · PN16

Advantages: good toughness and vibration damping, economical at larger sizes, hollow stainless steel ball keeps wetted parts corrosion-resistant

Limitations: not suitable for aggressive chemicals or chloride-rich brines

4. Duplex Stainless Steel 1.4470 / CD3MN

Application: seawater, offshore platforms, desalination, chloride-rich brines, pulp and paper bleaching

Temperature: −25 °C to +180 °C

Advantages: roughly twice the yield strength of standard austenitic grades, outstanding pitting and stress-corrosion resistance

Limitations: premium price and longer lead times for large nominal sizes

5. Ductile Iron GGG40.3 with PFA or PFA-L Lining

Application: concentrated acids and alkalis, halogenated solvents, semiconductor fabrication; PFA-L for ATEX zones where static dissipation is required

Temperature: −20 °C to +200 °C

Advantages: near-universal chemical resistance, robust cast body, PFA-L conducts electrostatic charge safely

Limitations: special execution; lining is sensitive to abrasive solids and mechanical shock

Ball and Seat Materials

1. Stainless Steel Ball 1.4408 and Hollow Ball 1.4301

Application: standard ball across all KH series; the hollow 1.4301 variant reduces weight and inertia in the GGG40 body series

Temperature: up to +175 °C

Advantages: corrosion-resistant, dimensionally precise, reliable seal against the PTFE seat

Limitations: limited resistance to hydrofluoric acid and strongly reducing media

2. Duplex Ball SS32205 and Ceramic Ball

Application: duplex for seawater and offshore; ceramic for abrasive slurries, crystallising media and high-cycle duty

Temperature: up to +175 °C (within the valve assembly)

Advantages: highest pitting resistance (duplex) or highest abrasion resistance (ceramic), very long service life in severe conditions

Limitations: special execution at premium cost; ceramic is sensitive to impact

3. TFM1600 / PTFE Seat

Application: standard seat across the stainless steel and steel series for chemical, gas and general industrial duty

Temperature: −29 °C to +175 °C

Advantages: modified PTFE with lower cold-flow tendency than virgin PTFE, tight shut-off, near-universal chemical compatibility

Limitations: higher breakaway torque than soft elastomers

4. PTFE + 25 % Glass Fibre Seat

Application: GGG40 body series KH120 and KH121 for water, oil and gas service; also duplex-stem series 27 variants

Temperature: up to +150 °C

Advantages: glass-fibre reinforcement raises compressive strength and form stability, minimises cold flow under sustained pressure

Limitations: slightly lower elasticity than unreinforced PTFE; not suitable for highly abrasive media

Fergo flanged ball valves comply with the Pressure Equipment Directive 2014/68/EU and carry the CE mark. Depending on series, certifications include TA-Luft, Fire Safe to API 607 / ISO 10497, ATEX (II 2G Ex h IIB T3 Gb / II 2D Ex h IIIC T180 °C Db), AD2000-A4 and SIL 3 to IEC 61508:2010. Gas versions hold DVGW approval to DIN EN 13774, and separate DVGW drinking water approval is available. Flange connections follow DIN EN 1092-1 and ASME B16.5 Class 150, face-to-face lengths EN 558-1, and actuator mounting flanges ISO 5211.

Inspection documents to EN 10204 — type 2.2 works certificate or type 3.1 inspection certificate — are available on request. A full list of all certificates is published on the Fergo certificate page. For highly corrosive media, the PFA-lined ball valve range and the special alloy ball valves extend the programme further. You can verify seat compatibility with your medium beforehand using the Fergo resistance check.

Fergo holds more than 25,000 industrial valves in stock. Over 680 of them are flanged ball valves across the KH120, KH121, KH155 and KH156 series — covering every common nominal size, body material, seat and actuation type. Automation with pneumatic or electric actuators is carried out in-house, with no hidden surcharges. The J4C electric actuator delivers 20 to 300 Nm and runs on 24 V, 230 V or 240 V AC/DC.

Fergo ships across Europe — including the United Kingdom, the Nordic countries and all other EU member states. Smaller sizes travel by parcel service, whereas heavier flanged valves go by forwarding agent. Express shipping delivers within the next working days. You will find shipping costs, payment options and express terms on the shipping and payment terms page. For special alloys, jacketed designs or complete automation packages, don’t hesitate to get in touch with us through the customised solutions section.

Flanged Ball Valves in Stainless Steel & GGG40 — Buy Online

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Gas Ball Valve KH122G

3-way flanged ball valve KL112/KT112