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High-Chem Ball Cock made of PTFE - block construction

Product specification Robust straight-way ball cock, block construction, made of highly... more

Product specification

Robust straight-way ball cock, block construction, made of highly chemical-resistant PTFE.

Ball is embedded in the casing bed, which has the same shape as the ball.

Ball and stem are manufactured in one piece, therefore double bearing of the ball in the casing bed on the one hand and in the packing gland on the other hand, thus minimizing the risk of leakage.

Connections: seamless cylindrical G-internal thread. The threaded sleeves are reinforced by stainless steel rings.

Sealing of the ball by PTFE sealing sleeves, which also serve for adjustment.

Highest media resistance guaranteed by housing and sealing sleeves made of PTFE.

Technical specification

Material:

Housing: PTFE (polytetrafluoroethylene)

Sealing sleeves: PTFE (polytetrafluoroethylene)

O-ring: FPM (fluorinated rubber)

General Information THOMAFLUID ® -ball cocks (ball with through bore) with rotary handle... more

General Information

THOMAFLUID®-ball cocks (ball with through bore) with rotary handle are available in numerous variations.

Two types are available: the block construction EMP-A6 (parts 28880) on the one hand, and the compact cocks EMP-L6 on the other hand (parts 304871).

The type EMP-L6 is produced cost-effectively by injection moulding, providing a remarkable manageability and compactness of the cock body.

The block construction EMP-A6 is produced in the metal-cutting manufacturing process. The cocks are excellently suitable for direct wall mounting due to their rectangular construction. The product range varies from two-way cocks with through bore to five-way cocks with ball angled bore.

The ball cocks are designed for max. 10 bar (at +20 °C).

Safe and reliable isolation, mixture as well as distribution of gases and liquids

High flow rates even at heavily contaminated media

Ball and stem are manufactured in one piece

Sealing sleeves made of PTFE with highest resistance to chemically aggressive media

Securing of the sealing sleeves by O-rings made of FPM

Sealing of the ball upward by stem sealing using an O-ring

Numerous connection possibilities due to compatibility with THOMAFLUID®-and MULTIFIT®-tubing connectors, pipe connectors and fittings

Easily revolving manual rotary handle with position indicator

Fastening possibilities due to fixing clamps and angle brackets

Seamless cylindrical G 1/2" and G 1/4" internal thread according to DIN ISO 228

PP (Polypropylene)

High surface hardness

Resistant to hydrolysis

Autoclavable

Thermoforming possible

Physiologically safe

Very good dielectrical properties

Extremely good impact toughness and notch impact strength

Higher hardness and stiffness as well as better resilience than PE

Good resistance to alcohols, ketones, conc. acids and alkalis

Not stable to aromatic hydrocarbons, fats and oils, halogenes

Colour: grey

Density: 0.92 g/cm3

Temperature range: +5 to +90 °C

Shore hardness D: 72°

Max. operating pressure: 10 bar at +20 °C

Water absorption: <0.05 % (lowest water absorption)

Tensile strength: 25 - 40 N/mm2

Elongation at break: 800 %

Surface resistance: >1013 Ohm

PVDF (Polyvinylidene fluoride)

High-quality technical plastic for chemical apparatus and machine building, especially in the petrochemical, metallurgical, pharmaceutical, food processing, paper and textile industry as well as in the nuclear technology.

High impact toughness even at low temperatures

Highest mechanical stability and stiffness

Good breakdown strength

Low dielectric loss factor

Physiologically safe

Meeting highest purity requirements

Outstanding resistance to UV, weather and aging

Flame-resistant

High thermal stability

Resistant to alcohols, fats and oils, halogenes, alkalis, acids

Not stable to aromatic hydrocarbons, ketones, amines, pyridine, dimethylformamide, hot alkalis, fuming sulfuric acid

Colour: nature, slightly translucent

Density: 1.75 g/cm3

Temperature range: -40 to +140 °C

Shore hardness D: 79° (great hardness)

Max. operating pressure: 10 bar at +20 °C

Water absorption: <0.04 % (water resistant)

Tensile strength: 38 - 50 N/mm2

Elongation at break: 12 %

Surface resistance: >1013 Ohm

PTFE (Polytetrafluoroethylene)

Heavy-duty plastic

Antiadhesive surface

Highest gas-tightness

Non-combustible

Outstanding sliding properties

High tracking resistance

Excellent stress cracking resistance

Excellent weather resistance

Very good dielectrical properties independent of frequency and temperature

Very good electrical insulating capacity also at air humidity

Very good chemical resistance to most aggressive media

Colour: milky, white

Density: 2.20 g/cm3

Temperature range: -200 to +150 °C

Shore hardness D: 60°

Max. operating pressure: 6 bar at +20 °C

Water absorption: 0.01 %

Tearing strength: 30 - 40 N/mm2

Elongation at break: 300 %

Surface resistance: >1017 Ohm

PFA (Perfluoroalkoxy)

High-quality technical plastic for chemical apparatus and machine construction as well as electrical engineering

Very good pressure resistance

Very high resistance to media

Excellent resistance to weather

Flame-resistant

Colour: milky, translucent

Density: 2.10 g/cm3

Temperature range: -200 to +200 °C (highest dimensional stability in heat)

Shore hardness D: 60° to 65°

Max. operating pressure: 10 bar at +20 °C

Water absorption: <0.03 %

Tensile strength: 27 to 32 N/mm2

Elongation at break: 300 %

Surface resistance: >1017 Ohm

FPM (Fluorinated rubber)

FPM is a polymer of highest quality made of fluorinated hydrocarbons (fluorine content 64 % to 70 %) and belongs to the group of elastomers

FPM has the best resistance to swelling in mineral oils compared to all elastomers

Highest sealing force in continuous operation (after 100 h at +150 °C in air still 90 % of the initial sealing force)

Lowest evaporation rates at high vacuum

Low permeability to gas

Outstanding radiation resistance

Excellent chemical and physical properties, almost identical to those of PTFE. The essential difference compared to PTFE is the lower cold flow, lower diffusion and better transparency.

High chemical resistance to many chemicals, ozone, heat and weather.

Unstable to polar solvents such as ketones and esters (considerable swelling), organic acids (acetic acid or formic acid), strong bases such as amines (chemical attack).

Not suitable for applications at temperatures below -20 °C as well as in hot steam.

Colour: black

Density: 1.10 g/cm3

Temperature range: -30 to +220 °C, for a short time +300 °C

Water absorption: no data

Tensile strength: 13 N/mm2

Elongation at break: 450 %

Shore hardness A: 75°

Surface resistance: no data

Item Image NW
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Price
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Buy
28880
4 G 1/4" 1 80 25 55 20 36 6,6 25 285.00
28882
6 G 1/4" 1 80 25 55 20 36 6,6 25 285.00
28886
10 G 1/2" 1 120 48 78 30 45 6,6 45 713.00
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