Extend Stem underground Fully Welded Ball Valve Application Pipeline Valve
Product Description
Due to the fully Welded Ball Valve valve seat is composed of a carbonized sealing ring and
a disc spring, it has strong adaptability to changes in pressure and temperature, and will not produce
any leakage within the marked pressure and temperature range.
| Design standard: | API6D, ASME B16.34, BS5351, ISO17292 | ||
| Connection ends: | butt weld, flanged, ring joint, butt weld by flanged | ||
| Actuator: | electrical actuator,pnenmatic actuator,penumatic-hydraulic actuator etc. | ||
| Nominal diameter: | 2” – 48” (DN 15-DN 1200) | ||
| Pressure : | CLASS 150 – CLASS 2500 (Mpa 1.6- Mpa 42.0) | ||
| Materials: | carbon steel,stainless steel,20#steel ,nickel alloy,cobalt alloy | ||
| Application | petroleum, natural gas,chemical,power station,metallurgy,papermaking | ||
General Design Features
| Fully welded body | Sealant injection fitting for emergency stem&seat sealing |
| Spring energized seats | ISO5211 Mounting pad for actuator or gear operator |
| Metal or soft seated | Removable stem seal under full line pressure in fully opened or closed position |
| Double Block and Bleed | Antistatic device for grounding of the ball, stem and body |
| Full or reduced bore | Self-lubricated bearings in accordance with API6D, API6FA, BS6755 and NACE01-75(latest edition) |
| Flanged or welded ends | Trunnion supported design reduces operating torque |
| Blow-out proof trunnion stem design | 8″& above valves are equipped with lifting lugs |
| Corrosion resistant low friction bearing | Two sets of O-ring plus fireproof stem packing prevent leakage |
Design Features
Anti-Blowout Stem Design
Stem seal integrity is achieved by the three o-rings (or two o-rings and a graphite gasket), which
can be interchanged with new ones under pressure on the line.
Emergency Sealant Injection System
The Sealant Injection System locates on the bonnet that can be utilized in case of emergencies,
o-ring damage and stem leakage occurs.
Emergency Seat Seal
Special sealants may be injected thru fittings located on the adapter flanges to restore sealing
integrity if damaged. A second internal check valve provides backup to the fitting.
Heavy Duty Bearings
The ball is supported by heavy duty coated Steel Bearings. Thrust load on the ball is
supported by large trunnions mounted within captured trunnion blocks for getting low operating
torque and durable seat.
Double Sealed shell Connections
Double o-rings or a o-ring and fireproof gasket on body/adapter connections ensure reliable sealing.
This makes the P3 suitable for above or below ground service.
Antistatic Device
Springs between the trunnion and the ball or the stem and the gland plate permit current switching
effect in all valve components.
Extend Stem
When the Fully Welded Ball valve is installed underground or buried, the valve stem can be lengthened.
The pressure relief valve, blowdown valve, and grease injection valve are also extended to appropriate positions.
About Us
FAQ:
Q1: Are you a Manufacture or trading company?
A: We are a professional Manufacture factory, we have been in Valve field more than 15 years.
Q2: What’s your MOQ?
A: Low MOQ,1 Set.
Q3: Can you provide OEM and customized product?
A: Yes, we can.
Q4: Do you offer guarantee for the products?
A: Yes, we offer 1 year warranty to our products.
Q5: Why Choose Weite Valve?
A: 1. We are manufactory, we can provide cost effective products.
2. We have full experience in valve industrial, both our sales team and technical engineers can provide you professional solution.
