DIN F15 Non-Rising Stem Gate Valve

The stem nut of the hidden gate valve is directly contacted with the medium in the valve body. When the gate is opened and closed, it is realized with the rotating stem. The advantage of this structure is that the height of the gate valve keeps constant, so the installation space is small, and it is suitable for large caliber or gate valves with limited installation space. Such a structure should be equipped with an opening and closing indicator to indicate the degree of opening and closing.

Features:

1. Drive unit is made to user's request if not specified handwheel drive will be used.
2. Top-mounted stem nut can prevent stem disc from falling off when valve is at open position and handwheel is taken off.
3. Packing uses flexible graphite for dependable sealing performance.If requested by users,packing spacer ring and greasing mechanism can be available.
4. Upper seal design to ensure dependable packing and sealing when valve is fully opened.(Replacement of packing under pressure is not recommended)
5. Lift stem,with stem and disc connected by t-slot,and stem T head intergrally forged to ensure sufficient strength of joint.

Technical Specification:

1. Design and Manufacture: DIN3352
2. Inspection and Test: ISO 5208,EN12266
3. Flanged ends dimension: EN 1092-1,DIN2544 PN25,DIN2545 PN40,DIN2546 PN64
4. Butt-welded ends dimension: EN12627
5. Face to face and end to end: DIN3202,EN558-1,ISO5752
6. Pressure-temperature ratings: DIN2401