Split-Body Valves - Split-Body PN16/PN40 Series 760 | Valpres

Valpres Series 760 PN16/PN40 Flanged Ball Valve

Two-piece split-body ball valve with DIN flanged ends, used for on/off isolation in industrial liquid and gas services. The construction is suitable for process lines where full-bore shut-off, bolted body maintenance access, and defined pressure class selection are required.

Technical Data

• Sizes: DN15 to DN300
• Pressure rating: PN40 up to DN50; PN16 from DN65 upward
• Temperature range: -20°C to +160°C, subject to seat and seal compatibility
• Vacuum service: down to 10⁻³ torr
• Body materials: 1.4408 / ASTM A351 CF8M or ASTM A352 LCB
• Ball: ASTM A479 TP316 / CF8M or TP304 / CF8
• Stem: TP316 or TP304 / 17-4PH
• Seats: PTFE
• Stem seal and body gasket: Graphoil and PTFE
• O-rings: FKM
• ISO top mounting for manual operator or actuator installation

Variants and Selection Differences

The series includes versions such as 760000, 760001, 760003, 760007, 760011, 760012, 760017 and related variants. Differences are mainly associated with body material, flange drilling, nominal diameter, and service suitability.

• CF8M stainless steel body: generally selected for water, neutral fluids, compressed air, fuels, and compatible industrial fluids.
• LCB carbon steel body: used where low-temperature carbon steel construction is specified and the process medium is compatible.
• PN40 versions: applicable mainly on smaller diameters up to DN50.
• PN16 versions: used on DN65 and larger sizes according to the series pressure classification.

Suitable Media

Typical media include water, compressed air, methane gas, fuels, neutral gases, and industrial liquids compatible with CF8M or LCB body materials, PTFE seats, Graphoil gaskets, and FKM elastomers. Chemical compatibility must be checked against concentration, temperature, and operating pressure.

Typical Applications

• Isolation of process water and utility water lines
• Compressed-air distribution headers
• Methane gas lines in approved valve executions
• Fuel transfer and storage systems, subject to seal compatibility
• Industrial HVAC and plant utility networks
• Skids requiring DIN flanged process isolation

Actuation and Control Interface

The ISO top mounting interface allows installation of pneumatic, electric, or manual gear operators. For automated service, actuator sizing should consider differential pressure, breakaway torque, cycling frequency, ambient conditions, and fail-open or fail-closed requirements.

Maintenance and Leakage Considerations

The split-body design allows access to internal sealing components during planned maintenance. PTFE seats are suitable for tight shut-off in compatible clean services, but abrasive solids, high cycling, or temperature cycling can affect seat wear and leakage performance.

Selection Criteria

• Confirm DN, PN class, flange standard, and face-to-face requirements.
• Check Kv or flow capacity against line pressure drop.
• Verify operating temperature against PTFE, Graphoil, and FKM limits.
• Confirm body material compatibility with the process medium.
• Define manual operation, gear operator, or actuator requirement.
• Specify certificates or material traceability if required by the project.

FAQ

Can the Series 760 be actuated?
Yes. The ISO top mounting interface supports actuator installation when the actuator is sized for valve torque and service conditions.

Is it suitable for methane gas?
Yes, in the specified executions intended for methane gas service. The exact code and certification requirements should be verified before procurement.

When is PN40 available?
PN40 applies up to DN50. From DN65 upward, the series is PN16.