Pindee Valve Manufacture API6D Pipeline Large Size Full Welded Ball Valve CLASS 150~2500 In China

Pindee Valve Manufacture API6D Pipeline Large Size Full Welded Ball Valve CLASS 150~2500 In China which normal Size:1/2~40 and the pressure rating:CLASS 150~2500 are designed according to API standard of API6D, transition & pup pieces will match line grade if necessary, available with stem extension for buried installation.If there is no reliable stem anti-blow design, the stem is easy to be blown out.The valves can be applied in wide temperature ranges ( -46~200℃),  particularly for pipeline flow with large size and high pressure. The series are subjected to the fire safe tests and certified per API607 and API6FA.

Pindee Valve manufacture of high-pressure valve and international latest technical standard,it is mainly applied for the long distance pipeline transportation of petrol,natural gas and gas pipeline system in cities.Because of the special characteristics of underground type ball valve,the capability to endure pipeline stress, safety,weather resisting property and long run reliability is fully considered when designed.

This kind of under normal circumstances, all the welded ball valves manufactured by Pindee Valve, before fire, Leakage from the valve stem area is prevented by two O-ring seals and a gland packing. Leakage through the valve body connection is also blocked by an O-ring seal and a body gasket. After a fire deteriorated the O-rings, gland and body gasket, the fire safe stem packing prevents external leakage.When a fire occurs, the non-metal seat and the circlet are invalidated by melting. At this time, under the action of the spring force, the metal seat and the ball form a metal to metal hard seal. The graphite ring expands under high temperature to form a seal. Metal to metal hard.

1ST. Structure Integral Valve

This is a type of welded by forged steel. High Quality Forge Steel Fully Welded Ball Valve,The forging materials are exposed to ultrasonic assessment as indicated by ASME nondestructive defect location necessities. The welding incline on the association face is exposed to fluid entrance assessment.

2ND.Sulfide Stress Resistance and Corrosion Resistance

Certain corrosion allowance is left wall thickness for the body. Underground Fully Welded Ball Valve Made in China,The carbon steel stem,ball,fixed shaft,seat and seat ring are subjected to chemical nickel plating according to ASTM B733 and B656. What's the most, various corrosion resistance materials are available for customers to select.

According to requirements from our customer, the valve materials can be selected according to NACE MR 0175/ISO 15156 or NACE MR 0103, also, severe quality control and quality examination ought to be completed during the assembling to completely meet the prerequisites in the principles and meet the assistance conditions in sulfurization climate.Large Size Fully Welded Ball Valve Manufacture

3TH. Transition Pipe Welding

When manufacture the fully welded pipeline ball valve, the transition pipe welded for the welding ends valve. The transition pipe can be provided by users or by our organization as indicated by client prerequisites.Kindly demonstrate the transition pipe diameter and length A when decide to place orders.

Design Features

One-piece welded body & end-piece connection pipe

Mirror polished stainless steel ball tested spherical roundness.

Bubble tight excellent sealing with carbon-reinforced PTFE (Teflon) seats.

Pre-loaded seat springs ensure leak-tight at low pressure and reduce valve operational torque.

Anti blow-out stem according to international standards.

Double O-rings ensure the stem sealing and can be replaced.

Stem dry bearing, metal with PTFE coating having self-lubricating capabilities need no additional lubricant.

Standard

Design Standard：ASME B 16.34/API 6D /API 608/BS EN ISO17292/ISO14313

Face To Face Dimensions：ASME B 16.10/API 6D/EN558

Connection End：ASME B 16.5/ASME B 16.47/ASME B 16.25/EN1092/JIS B2220/GOST12815

Type Of Connection:RF/RTJ/BW