Design & Manufacture standard: API 6D, API 608, BS 5351/DIN3357/JIS B2071

Pressure & Temperature standard: ASME B16.34/DIN3230

Face to face dimension standard: ASME B16.10/DIN3202/JIS B2002

Flange standard: ASME B16.5, ASME B16.47/DIN2543-2545-2501/JIS B2220

Test & Inspect standard: API 598, API 6D/DIN2401/JIS B2003.

Size: 1/2”-10”(DN15~DN250)

Pressure Rating: 150LB-600LB/PN16~PN100/10K~60K)

Material: Duplex S31803、Super Duplex S32750、Super Duplex S327601A、、2A、3A、4A、5A、6A、1B、1C,CD4MCu、CD4MCuN、CD3MCuN、CE8MN、CD6MN、CD3MN、CE3MN、CD3MWCuNF51、F53、F55、F60

Suitable Temperature: -196ºC~450ºC( Different temperature choose different materials).

Suitable Medium: Water, Steam, Oil and natural gas etc.

ASTM A494 M35-1 ball valve

Your specified valve is technically plausible, but several details must be confirmed before approving it for procurement.

1. Material and standards verification

Item	Verification
Body material	ASTM A494/A494M Grade M35-1 — nickel-copper alloy casting
Alloy family	Ni-Cu, commonly associated with Monel-type alloys
Typical chemistry	Nickel balance; copper 26–33%; iron max. 3.5%; carbon max. 0.35%
Material standard	ASTM A494/A494M, with the applicable edition specified in the order
Nominal size	DN50, approximately NPS 2
Pressure designation	PN16, nominally 16 bar
End connection	Flanged; flange standard and facing must be confirmed

ASTM identifies A494/A494M as the specification for nickel and nickel-alloy castings intended for corrosion-resistant service. M35-1 composition data are also published in foundry technical references.

2. Critical points to resolve

Pressure rating: PN16 alone does not prove that the completed valve is suitable for 16 bar at your operating temperature. Obtain the manufacturer’s pressure-temperature rating.
Flange compatibility: Confirm whether the flanges must comply with EN 1092-1 PN16, another standard, or a project-specific requirement. Check dimensions, facing, and drilling.
Wetted materials: Specify the body, ball, stem, and other pressure-containing or wetted parts separately. Do not assume all components are M35-1.
Seat and packing: Select PTFE, reinforced PTFE, or another suitable material according to fluid compatibility, temperature, and leakage requirements.
Testing and documentation: Require pressure-test reports, material certificates, and traceability appropriate to the project.

Important: Corrosion resistance is medium-specific. Before approving M35-1, confirm the actual fluid, concentration, temperature, and any contaminants. Material selection should be based on those conditions rather than the alloy name alone.