Acrylonitrile butadiene styrene
A tough, impact-resistant thermoplastic. Used for light, economical valves and fittings in cooling water and drinking water lines; the ABS body/disc option of the Emsal wafer check valve.
- HARDNESS
- Rockwell R102–R109
- Rm · MPa (typical)
- 35–42
- TEMPERATURE
- −40 … +60 °C
- COST
Design
Polymer; defined by its structure and filler type rather than chemical composition.
Mechanical properties
| TYPE · CONDITION | Rm MPa | Elongation at break % | Hardness | Coefficient of friction | Water absorption % |
|---|---|---|---|---|---|
| Unfilled, typical | 35–42 | — | Rockwell R102–R109 | — | 0.3–1.0 |
Typical values (the standard gives no minimum values); they vary with grade and filler. Converted from US units.
Service temperature
−40 … 60 °C; tougher than PVC at low temperature. Pressure rating drops above 20 °C.
Physical properties and heat treatment
- DENSITY
- ≈ 1.04 g/cm³
Media suitability GENERAL TREND
Emsal assessment. The final choice is made from corrosion tables, taking concentration, temperature, chloride content and flow velocity into account.
Strengths and weaknesses
Strengths
- Impact toughness at low temperature
- Light and economical
- Joined by solvent cementing
Weaknesses
- Not resistant to solvents, fuels and ketones
- Degrades under UV
- Not used above 80 °C
Manufacturing and use
- ECONOMY
- Low.
- MANUFACTURING METHODS
- Injection moulding
- TYPICAL VALVE PARTS
- Body/disc (wafer) · Ball · Union
Used in 8 Emsal products
- 001Wafer check valveBody · Disc
- 005Short pattern swing check valveDisc
- 351Float level switchBody
- 352Pressure transmitterBody
- 353Paddle flow switchBody
- 354Mini level switchBody
- 355Magnetic level switchBody
- 357Digital pressure gaugeBody
Source: ISO 19062. Values compiled and verified by Emsal Vana; for binding values, refer to the current edition of the standard and the material certificate.