design features
DATIAN standard floating ball valves are manufactured in tow pieces bolted body,ball valves could be supplied full or reduced bore,designed for maximum rigidity against pipeline thrust,made from forged components or barstock.
Bolted body constructions allow easy service and maintenance opration on site,Pressure rating is from class ANSI 150 up to ANSI 2500 Lbs.
Valves are usually supplied with lever operator,with gear box or bare stem on customer request.All standard floating ball valves have below features:
- Lock device: valve is equipped with an integral locking device to secure line flow.
- Blow-out proof stem: the stem is made separately from the ball with an integral T-type round shoulder, which ensures total safety and integrity.
- Anti-Static Design: grounding devices are supplied from positive anti-static between ball/stem and body.
- ISO 5211 mount plate: simplifies the installation of actuators with standard connections.
- Emission-firee gasket: the primary Gaskey is emission-free graphite to eliminate leakage.
fire safe design
DATIAN ball valve have acquired API 607 certification,Fire safe is standard desing on all DATIAN(KJV) Ball valves,
When fire burned out the primary O-ring and seat insetr,the secondary seat fire-safe packing graphite seal,and seat ring & ball metal to metal contact preloaded by spring will minimize the internal process medium leakage.
standard
Design & Manufacturing Standard:API 6D,ASME B16.34,API 608,BS 5351
Face to face:ASME B16.10,API 6D,DIN 3202,BSEN 558
Flange Connection Size:ASME B16.5,BSEN 1092
Testing and inspection: API598,API6D
Cast Steel Floating Ball Valve
Form of Major Parts Materials
NO. | Part name | Material | |
GB | ASTM | ||
1 | Bonnet | WCB | A216-WCB |
2 | Nut | 35 | A194-2H |
3 | Gasket | Graphite+stainless steel | Graphite+stainless steel |
4 | Bolt | 35CrMoA | A193-B7 |
5 | Body | WCB | A216-WCB |
6 | Seat | PTFE | PTFE |
7 | Ball* | 25+ENP | A105+ENP |
8 | Stem** | 1Cr13 | A182-F6a |
9 | Gasket | PTFE | PTFE |
10 | Packing | Flexible Graphite | Flexible Graphite |
11 | Gland | WCB | A216-WCB |
12 | Screw nail | 35 | A194-2H |
13 | Locating piece | Q235A | Carbon steel |
14 | Ring | 65Mn | AISI 1566 |
15 | Wrench | KT330-08 | A47-667 32510 |
Forged Steel Floating Ball Valve
Form of Major Parts Materials
NO. | Part name | Material | |
GB | ASTM | ||
1 | Bonnet | WCB | A216-WCB |
2 | Nut | 35 | A194-2H |
3 | Gasket | Graphite+stainless steel | Graphite+stainless steel |
4 | Bolt | 35CrMoA | A193-B7 |
5 | Body | WCB | A216-WCB |
6 | Seat | PTFE | PTFE |
7 | Ball* | 25+ENP | A105+ENP |
8 | Stem** | 1Cr13 | A182-F6a |
9 | Gasket | PTFE | PTFE |
10 | Packing | Flexible Graphite | Flexible Graphite |
11 | Gland | WCB | A216-WCB |
12 | Screw nail | 35 | A194-2H |
13 | Locating piece | Q235A | Carbon steel |
14 | Ring | 65Mn | AISI 1566 |
15 | Wrench | KT330-08 | A47-667 32510 |
Pressure grade | 1.6-42.0MPa | Class 150-2500 | |
Test pressure (MPa) |
Shell test | 1.5*PN | |
Sealing test | 1.1*PN | ||
Air test pressure | 0.6MPa | ||
Working temperrature | -196℃-+180℃ | ||
Working medium | Water,oil,natural gas,corrosive medium,etc. |
Serial Model | (K)Q41、(K)Q341、(K)Q641、(K)Q741、(K)Q841、(K)Q941 | ||||
(K)Q61、(K)Q361、(K)Q661、(K)Q761、(K)Q861、(K)Q961 | |||||
Pressure Grade Range | PN1.6-10.0MPa | CLASS 150-600 | |||
Nominal size | DN15-200mm | 1/211-811 | |||
Driving Manner and Scope of Application | Handle driving | PN1.6-10.0MPa | CLASS 150-600 | ||
DN15-200mm | 1/211-811 | ||||
Worm gear operated | PN1.6-4.0MPa | PN6.4-10.0MPa | CLASS150-300 | CLASS400-600 | |
DN150-200 | DN80-100 | 611-811 | 311-411 | ||
Air-operating and fluid driving | PN1.6-10.0MPa | CLASS 150-600 | |||
DN15-200mm | 1/211-811 | ||||
Electric driving | PN1.6-4.0MPa | PN6.4-10.0MPa | CLASS150-300 | CLASS400-600 | |
DN150-200 | DN80-100 | 211-811 | 211-411 |