ST Top mounted ball valve,The integrated valve body equipped with ball valve can effectively reduce the leakage point and bear high pressure;
The mounted ball valve below DN100 is designed with double inclined plane structure.Under the action of the spring, the valve can self-compensation sealing, ensure the valve in the middle and low pressure have good sealing performance, long service life;Fixed structure is adopted above DN100 to ensure its performance.
Top mounted ball valves are widely used in petroleum and natural gas pipelines, as well as in oil recovery, refining, petrochemical, chemical industry, metallurgy, nuclear power, food and paper equipment.
Structural features:
1. Integral valve body design, top pivot fixed support, flange structure
2. High-strength integral pivot fixed cue is designed with blowout proof protection structure to ensure accurate positioning of the ball
3、with double blocking discharge function (DBB function), fire and anti-static
4、2-Block O-ring seal, coupled with fire retardant packing structure on the stem, effectively prevents leakage
5、(INCONEL) spiral spring makes the metal seat of nylon seal move towards the ball, with the function of two-way sealing of inlet and outlet
6、Superior standard nylon and PEEK seats ensure an effective seal at low pressure
7、Sealant injector designed to provide an emergency injection of sealant to seal the stem and seat
8、With unique retractable seating technology, ball clubs, stem seals, metal seats and spiral springs can be replaced online
9、Preset drive device platform and screw hole, ready to assemble the drive device required by the customer
Design Specification:
Design criteria: API 6D GB/T 19672 GB/T 12237
Structure length: API 6D ASME B16.10 GB/T 12221
Flange connection standard: ASME B16.5 ASME B16.47 GB/T 9113 JB/T 79 HG/T 20592
For welding connection standard: ASME B16.25 GB/T 12234
Fire protection requirements :API 6FA API 607
Pressure test: API 6D API 598 GB/T 13927 GB/T 26480
Performance Parameters:
Body material: carbon steel、 forged steel、 aluminum bronze etc
Nominal size: NPS 1-1/2 "~60" DN40~DN1500
Pressure range: Class 150~2500 PN10~PN420
Operating temperature: -60℃~+260℃
