Hartmann Valves metal-seated high-pressure ball valves, Kelly valves and wellheads

Hartmann Valves AST, ASF and ASFG ball valves, Twin Ball Valve, multi-way, heating jacket and pig ball valves, Kelly valves and API 6A wellheads. Selection by pressure and medium, quotation per project.

AST trunnion-mounted ball valves

Hartmann Valves AST ball valves have a trunnion-mounted ball for high pressure and frequent cycling. Seat rings are floating and self-centering, with pre-tensioned spring elements. The upper spindle seals are replaceable at full line pressure.

From -200 to +750 °C
Pressure up to 1035 bar
Sizes DN8 to DN1000
High-cycle: 200,000 per year

ASF and ASFG floating ball valves

The ASF series is the universal floating ball design with a two-piece forged split body. The ASFG series serves small sizes at very high pressure and has triple shaft sealing. Both series suit 100% hydrogen and helium and H2S service.

From -46 to +250 °C
ASFG up to PN 750
Forged split body
Triple shaft sealing

Twin Ball Valve for double isolation

The Twin Ball Valve combines two independent shut-off systems in one compact body. It provides double block and bleed (DBB) and double isolation and bleed (DIB) and allows testing between the closures. Compared with two single valves, there are fewer potential leak points.

Pressure up to 420 bar
Sizes DN 25 to DN 500
From -46 to +250 °C
DBB and DIB designs

Multi-way ball valves with L, T and X porting

Hartmann Valves multi-way ball valves switch flow between lines and media, for example on filters or when changing turbine fuel. Balls with L, T or X porting give 3-way, 4-way and distribution versions. Several valves can be coupled for synchronised switching.

Vacuum to 700 bar
From -200 to +550 °C
L, T or X ball porting
Trunnion-mounted ball

Ball valves with integrated heating jacket

These valves keep viscous and solidifying media flowable: liquid sulfur, wax, bitumen, polymers and resins. The jacket is built into the body, closer to the process medium than a welded-on double jacket. Maxi heating covers body, ball and flanges; Midi heats the moving parts.

Up to +300 °C, option +450 °C
Up to PN 420 / Class 2500
Sulfur, bitumen, resins
Rolled and forged steel

Pig ball valves for launching and receiving

The pig ball valve combines a shut-off valve with a pig launching and receiving station. The side lock chamber has a bayonet closure, and the pig goes in after closing and depressurising the valve. In the multiple barrier version, two additional seat rings secure the lock chamber.

Pressure up to 250 bar
Sizes DN 50 to DN 600
From -45 to +120 °C
Pig length up to 1.4 x DN

Kelly valves for the drill string

A Kelly valve shuts off flow inside the drill string when pressure rises. Versions are AUFR with one or two operating shafts and TUFR with two balls and four shafts. On request the valves come with break-in of the connections and a spare parts kit of sealing and wear parts.

10,000 and 15,000 psi
From -46 to +180 °C
API 7-1, Class 2
TUFR: two balls

Wellheads and Christmas trees

Hartmann Valves builds API 6A wellheads in conventional and solidblock design with metal-seated ball valves. The solidblock Christmas tree comes in T or Y configuration, operated by handwheel, gearbox or actuator. Uses include gas production, underground storage, geothermal and hydrogen.

Up to 690 bar
Bore DN 52 to DN 162
From -46 to +345 °C
Material classes AA to HH

How to choose a Hartmann Valves ball valve

Selection starts with valve design and pressure. The trunnion-mounted AST series covers up to 1035 bar, -200 to +750 °C and sizes DN8 to DN1000. The floating ball ASF is the universal series; ASFG serves small sizes up to PN 750.

Next comes the function: double isolation with the Twin Ball Valve in DBB and DIB designs, multi-way valves with L, T or X porting, valves with an integrated heating jacket for sulfur and bitumen, and pig ball valves.

Metal-to-metal sealing and testing

Ball and seat rings of Hartmann Valves ball valves form a gas-tight metal-to-metal seal with leak rate A, zero bubbles; the definition is based on ISO 5208. Pressure and leak tests follow EN 12266 or API 598.

Every valve and every wellhead component is tested at the plant. For hydrogen, the manufacturer evaluates materials and measures external leakage with a mass spectrometer.

Drilling and wellhead equipment

Kelly valves go into the drill string: AUFR with one or two shafts and TUFR with two balls, rated 10,000 and 15,000 psi, from -46 to +180 °C to API 7-1.

API 6A wellheads are built in conventional and solidblock design. The solidblock Christmas tree is rated up to 690 bar, with bores DN 52 to DN 162 and material classes AA to HH.

Spare parts and maintenance

The manufacturer maintains a spare parts inventory and makes individual parts to order. Parts are matched by order number, serial number, tag number and location of the valve.

For wellheads, a basic inspection once a year and a premium inspection every two years are recommended. The service and repair department has operated since 2010.

The manufacturer

Hartmann Valves GmbH is a family company from Celle, founded in 1946, with 230 employees. Design, assembly and testing take place at the plants in Celle and Burgdorf-Ehlershausen.

The company developed the pure metallic sealing ball valve in 1987/88 and the Twin Ball Valve in 1997/98. Sizes and lead time are stated in the quotation for each project.

Hartmann Valves and model names are trademarks of their respective owners and are used only to identify the equipment for which we source parts. SpareX is not an official dealer, distributor or representative of Hartmann Valves and is not affiliated with the trademark owner. Origin, documents and warranty are stated for each item in the quotation.