Pneumatic Flanged Floating-Ball Valve with High Mounting Platform
High mounting platform simplifies actuator installation and automation upgrades.
Product overview
This high-platform pneumatic flanged floating-ball valve covers DN15~DN200 and multiple pressure classes under Chinese, US and Japanese standards. Different body and seat materials are available. The integral raised platform encloses the stem and directly accommodates automation accessories for easy integration. Flanged connections allow convenient disassembly and maintenance, keeping the pipeline secure and resistant to leakage.
Available with double-acting and single-acting spring-return pneumatic actuators; the single-acting version returns automatically on air loss. On/off shutoff and proportional control are supported, with a valve positioner for precise flow control. Widely used in chemical and petrochemical, oil and gas, power, municipal wastewater, food and pharmaceutical pipelines. Zero-leakage floating-ball sealing makes it a general-purpose fluid shutoff valve across industries.
Core technology and operating parameters
| Model | Q641 |
| Nominal size | DN15~200 mm |
| Pressure | 1.6, 2.5, 4.0 (MPa); 150LB, 300LB; 10K |
| Dimensional standards | Chinese, US, Japanese standards |
| Body material | carbon steel (WCB), stainless steel (CF8, CF8M) |
| Seat material | polytetrafluoroethylene (F), polyphenylene (P), hard alloy (Y) |
| Action type | Double-acting, single-acting (spring-return) |
| Control mode | Two-position shutoff (on/off), modulating |
| Accessory options | Solenoid valve, valve positioner, limit switch, three-piece air preparation unit (FRL), manual override |
Core construction and design advantages
Integral raised mounting platform
Flanges compatible with multiple standards for domestic and international projects
Multiple body and seat materials for demanding conditions
Two pneumatic drive options + two control modes
One-stop selection of a full range of automation accessories
Zero-leakage floating-ball sealing
General-purpose fluid shutoff valve across industries
Easy maintenance reduces operating costs
Ready to upgrade your automated fluid-control system?
Standard or custom solutions for harsh conditions. HES technical team supports your project.