Valve Material Reference
ASTM A395 / ISO 1083 GGG-40 Valve
Ductile Iron (Nodular Cast Iron)Ductile iron (also called nodular iron or spheroidal graphite iron) is the dominant material for water, utility, HVAC, and firewater valve bodies worldwide.
Form
Cast
Max Temp
+350°C (+660°F)
Min Temp
−20°C (−4°F)
Category
Non Ferrous
What is ASTM A395 / ISO 1083 GGG-40?
ASTM A395 / ISO 1083 GGG-40 (Ductile Iron (Nodular Cast Iron)) is a non ferrous valve material. Ductile iron (also called nodular iron or spheroidal graphite iron) is the dominant material for water, utility, HVAC, and firewater valve bodies worldwide. Temperature range: −20°C to +350°C (−4°F to +660°F).
- Form:
- cast
- Max Temp:
- +350°C (+660°F)
- Min Temp:
- −20°C (−4°F)
Chemical Composition - ASTM A395 / ISO 1083 GGG-40
Temperature Range
−20°C to +350°C (−4°F to +660°F)
Maximum Temperature
+350°C (+660°F)
Minimum Temperature
−20°C (−4°F)
Vajra Industrial Solutions manufactures and supplies valves in ASTM A395 / ISO 1083 GGG-40 (Ductile Iron (Nodular Cast Iron)) for potable water and municipal water distribution (with approved lining), with EN 10204 3.1 material traceability on every order.
Sourcing ASTM A395 / ISO 1083 GGG-40 valves?
Send your size, class and end connection — we'll quote ASTM A395 / ISO 1083 GGG-40 (Ductile Iron (Nodular Cast Iron)) valves with full MTCs in 24 hours.
Equivalent Grades - ASTM A395 / ISO 1083 GGG-40
| Standard | Equivalent Grade |
|---|---|
| ISO 1083 | GGG-40 / GJS-400-15 |
| EN 1563 | EN-GJS-400-15 |
| DIN | GGG-40 |
| BS EN | FGS 400/12 |
| JIS | FCD 400 |
Suitable Services
Potable water and municipal water distribution (with approved lining)
Industrial firewater and fire protection systems per NFPA 13
HVAC chilled water, condenser water, and heating circuits
Cooling tower water systems
Irrigation and agricultural water distribution
Low-pressure steam (≤ 1 bar, heating systems)
Sewage and grey water in building services
Not Suitable For
Corrosive chemical service - use stainless steel or lined construction
High-temperature steam above 350°C - use carbon or alloy steel
Sour service (H₂S) or offshore environments
Cryogenic service - ductile iron embrittles below −20°C
Valve Body Applications
Resilient-seated gate valves for municipal water mains (PN10/16)
Butterfly valve bodies for HVAC, cooling water, and firewater systems
Ball valve bodies for utility and low-pressure process water
Check valve bodies for pump discharge in waterworks
Strainer bodies in building services and irrigation systems
Trim Applications
Not typically used for trim - seats are rubber/EPDM/NBR moulded into the body
Typical Valve Types in ASTM A395 / ISO 1083 GGG-40
Gate valves: resilient-seated PN10/16, DN50–DN600, waterworks
Butterfly valves: wafer/lug PN10/16, HVAC and firewater
Ball valves: full-bore PN16/40, utility water and air
Check valves: swing and wafer type, pump discharge, DN50–DN300
Browse ASTM A395 / ISO 1083 GGG-40 Valves
All Valve Materials
Connected Engineering
Need ASTM A395 / ISO 1083 GGG-40 Valves?
We supply ASTM A395 / ISO 1083 GGG-40 (Ductile Iron (Nodular Cast Iron)) valves with full certification documentation — EN 10204 3.1/3.2 MTCs and hydrotest certs as standard.