Ever since its introduction back in the 1980s, NAF Turnex has proven its unique features and maintenance-free operation. The robust linkage system with bushing provides an optimum torque curve for quarter turn valves and eliminates play. This makes it ideal for rotary control applications. NAF Turnex is an integrated part in the NAF control valve package with a unique direct mounting concept. The actuator is also used for on/off service and has adjustable end-stops in both directions. Ever since we developed this state-of-the-art actuator the spare parts have been the same. This, combined with a unique system of sleeves, for different stem diameters, minimizes the number of spare parts.
Additional information
| Type | Scotch Yoke (Special Linkage Design) |
|---|---|
| Action | Rotary |
| Fluid Power | Pneumatic |
| Sizes | 02, 12, 22, 32, 42, 52 |
| Maximum Output | 20 000 Nm (14 500 ft-lb) at 72.5 psig |
| Pressure Rating | 116 psig |
| Fail Safe Operation | Last, Closed, Open |
| Enclosure | Aluminum |
| Seals | NBR Buna, PTFE, Nitrile |
| Temperature Range | -40°C to 80°C (-40°F to 176°F) Seal Dependent |
| Manual Override | Declutchable with Handwheel |
| Options | Low-Temperature Seals |
Features & Benefits
- Flowserve NAF Turnex is an integrated part in the NAF control valve package with a unique direct mounting concept eliminating the need for any brackets or couplings
- The robust linkage system provides an optimum torque curve for quarter turn valves and eliminates play
- Integrated air channels eliminates the risk of breaking external tubing
- Excellent sensitivity to provide quick, accurate movements for precise control and increased process efficiency
- Can be equipped with the M-lock safety locking device for simplified safety lock out and minimized risk of accidents
- Piston rod mounted in PTFE bearings for smooth operation
- Flexible system of sleeves for different stem diameters
Certificate
| Flowserve-NAF-Turnex-SIL-Certificate-NFENDS7459 |
Flowserve NAF Turnex SIL Certificate NFENDS7459.pdf |
