Stainless Steel Fixed Ball Valve Forged Flanged Ball Valve

Product Features

- Trunnion mounted fixed ball structure, suitable for large bore and high pressure working conditions.

- Forged valve body with dense material, high mechanical strength and good anti corrosion performance.

- Full port design, small flow resistance, large flow capacity, convenient for pipeline pigging cleaning.

- Spring loaded floating seat realizes bidirectional tight shut-off, low leakage rate.

- Anti-blow out stem design, built in anti static and fire safe structure complying with API 607.

- Self-relieving seat for abnormal cavity overpressure to improve operation safety.

- Low operating torque, supports frequent opening-closing cycles for long-term stable service.

Key Attributes

Product Structure

This is a Stainless Steel Fixed Ball Valve Forged Flanged Ball Valve. The ball is supported by upper and lower trunnion shafts instead of floating by seat force. Main components include forged valve body, bonnet, fixed ball, upper & lower trunnion shafts, spring preloaded floating seats, anti-blow out stem, flange connection ends, and ISO 5211 top mounting pad for actuators. Double block & bleed function can be provided upon request. Flange face options: RF, RTJ.

- Valve Body / Bonnet: Forged stainless steel A182 F304 / A182 F316L

- Ball: Forged stainless steel, hard-chromium plated or Stellite hard-faced

- Stem: A182 F316 stainless steel

- Seat Seal: PTFE / RPTFE for soft-seal; Stellite 6 hard-alloy for metal hard-seal

- Gasket & O ring: FKM, PTFE, customized for different temperature media

- Bolts: B8 / B8M stainless steel bolts

Pressure & Temperature Range

-Pressure Class: PN16-PN100, Class150-Class2500

-Working Temperature:

•Soft-seal version:-29℃ ~ +200℃

•Metal hard-seal version: -29℃ ~ +425℃

-Test Standard: API 598, shell test 1.5 times rated pressure; seat test 1.1 times rated pressure

-Size Range: DN50-DN600 (NPS2"-NPS24")

Operation Types

-Manual: Worm gear operator for large torque requirement

-Pneumatic: Single acting / double acting pneumatic actuator, with limit switch & solenoid valve

-Electric: On-off type or modulating electric actuator for remote automatic control

-Hydraulic / electro hydraulic actuation available on special request

All actuators fit ISO 5211 mounting platform.

Applications

Widely adopted for on-off and isolation service for liquid, gas and corrosive medium. Mainly used in oil & gas long-distance pipelines, petrochemical plants, chemical processing, power generation, water treatment, LNG and other heavy duty industrial projects.

Why Choose Our Stainless Steel Fixed Ball Valve Forged Flanged Ball Valve？

1. Adopt full forging process, internal material compact without casting porosity defects, fit high pressure heavy duty pipeline.

2. Trunnion fixed ball design greatly reduces operating torque for large size high pressure working condition.

3. Strict material incoming inspection, every valve passes full hydrostatic and gas seat leakage test before delivery.

4. Support soft-seal and metal hard-seal two versions to match different temperature and medium demands.

5. We offer complete technical support, drawing review and after-sales guidance for your project.

Purchasing Guide

Please provide below information when sending inquiry:

1. Nominal size and pressure class

2. Working medium, actual working temperature

3. Seal type: soft seal or metal hard seal

4. Operation type (worm gear / pneumatic / electric etc.)

5. Flange standard & flange face type (RF / RTJ)

6. Special requirement: fire safe, DBB function, anti corrosion treatment etc.

Our engineer will offer proper proposal according to your working condition.

Packaging & Shipping

Each valve will be cleaned and protected before packing. Valve ports are sealed with plastic caps to keep internal cavity clean. Valves are packed in solid plywood crates suitable for sea freight. We support EXW,FOB, CIF, DAP and other trade terms. Goods can be delivered to designated seaport or warehouse.

OEM & ODM

We accept OEM and ODM orders. We can customize body material, seal material, flange standard, special extension stem, special painting and logo marking according to customer drawing or technical requirement. Flexible MOQ for project orders.

Inspection & Testing

Every valve goes through full range inspection before shipment according to API 598 standard.

- Raw material incoming inspection: material chemical composition and mechanical property check, material traceability record provided.

- Shell hydrostatic test: 1.5 times rated pressure for valve body & bonnet.

- Seat leakage test: 1.1 times rated pressure, water or nitrogen medium.

- Visual inspection, dimension check, paint and surface finish inspection.

- Witness test by third party institute such as SGS, BV is acceptable upon client’s request.

- Full set of documents including MTC material test certificate, hydro-test report, certificate of conformity can be supplied.

Installation & Maintenance Guide

- Clean pipeline thoroughly before installation to clear welding slag, sand and debris, avoid damage to sealing face.

- Mount valve in correct flow direction, tighten flange bolts cross wise and evenly.

- Do not keep valve staying at half open position for long time storage or working status.

- For regular operation, run full stroke opening closing cycle periodically to prevent seal sticking.

- Check flange joint, stem packing for external leakage during routine site inspection.

- Replace worn seal parts during planned shutdown; use matching seal material for your working medium.

- If fitted with actuator, check actuator torque, limit switch status regularly.

After-sales Service

-Warranty period: 12 month warranty counting from date of shipment, against manufacturing defects.

-We provide technical support including drawing review, parameter confirmation and operation guidance.

-Our engineering team replies technical inquiries within 24 working hours.

-Spare parts (seats, gaskets, stem packing) are available for re-order.

-On-site technical consultation can be arranged for large scale project orders.

Note: Warranty does NOT cover damage caused by wrong installation, mis-operation or improper medium condition.

Related Recommended Products

-Floating ball valve (2 piece /3 piece stainless steel ball valve)

-WCB carbon steel fixed trunnion ball valve

-Jacket insulated fixed ball valve for high viscosity medium

-Ball valve with pneumatic / electric complete actuator set

-Metal hard-seal fixed ball valve for high temperature service

Our Factory Strength

Huadu Valve Group is located in Wenzhou China, specialized in industrial valve design, forging, machining and assembly. We own complete production lines including forging workshop, CNC machining workshop, assembling workshop and independent test lab. All critical production processes are finished in house, not fully outsourced. We have rich experience for overseas oil gas, petrochemical and water supply project orders. Our products are exported to Southeast Asia, Middle East, Europe and other regions.

Call For Inquiry

Please send us your detailed working condition requirements including size, pressure, medium, temperature, operation type and special demands. Our technical team will evaluate and prepare formal quotation for you shortly. Welcome sample order and large project cooperation.