Titanium 1-PC Full Bore Wafer Type Flanged Ball Valve Manufacturer in Africa

Compact chemical and marine pipelines often need the straight flow path of a ball valve without the length and weight of a conventional flanged body. A one-piece wafer pattern answers that need while keeping the main pressure boundary free from multiple body joints. African Valve is a prominent Titanium 1-PC Full Bore Wafer Type Flanged Ball Valve Manufacturer in Africa, supplying valves for projects in South Africa, Nigeria, Egypt, Angola and other African markets.

Why Titanium Is Chosen

Titanium forms a stable oxide layer that gives strong resistance in seawater, wet chlorine and chloride solutions. This makes it useful where stainless steel may suffer from pitting, crevice corrosion or attack around stagnant pockets. Grade 2 is commonly selected when corrosion resistance is the main concern, while Grade 5 may be considered where higher mechanical strength is needed. Material selection must still consider temperature, concentration, oxygen level, reducing acids and cleaning chemicals because titanium is not suitable for every corrosive fluid.

One-Piece Wafer Construction

The pressure-containing body is manufactured as a single section and installed between two pipeline flanges. The short face-to-face length reduces installed weight and suits compact skids and marine piping. Internal servicing normally requires removal of the complete valve from the line, so enough access should be left around the bolts and operator.

Full-Bore Ball Operation

The ball turns through 90 degrees. When the port aligns with the pipe, the valve is open and the full-bore passage keeps flow restriction low. Rotating the ball across the line brings it into contact with the seats for shutoff. The valve is mainly intended for isolation. Keeping it partly open for long periods can concentrate velocity at the seat edge and shorten seat life.

Ball, Stem and Seat Materials

The body, ball, stem, retainers and wetted components should use the specified titanium grade or a proven compatible material. Using titanium only for the body can leave lower-alloy internal parts exposed to the same fluid. PTFE and RPTFE seats suit many clean seawater and chemical services. PEEK may be selected where higher pressure or temperature requires load resistance. Metal seating can be considered for abrasive media, elevated temperature or frequent cycling. Optional features include a blowout-resistant stem, anti-static arrangement and ISO 5211 mounting.

Technical Specifications

Size Range: DN15 to DN200
Pressure Ratings: ASME Class 150 to Class 300
Design Standards: API 608, ISO 17292 and ASME B16.34
Testing Standard: API 598
End Connections: Wafer pattern for installation between flanges
Operation: Lever, gearbox, pneumatic actuator or electric actuator
Body Material: Titanium Grade 2 or project-specified titanium grade
Body Construction: One-piece
Bore Type: Full bore
Seat Options: PTFE, RPTFE, PEEK or metal seat
Actuator Mounting: ISO 5211 where specified

Installation and Torque Checks

Accurate centring between the flanges is essential. Poor alignment can load the body unevenly, interfere with the bore or damage the seat. Flange faces should remain parallel, and bolts should be tightened in a gradual cross pattern. Actuator torque should be based on maximum differential pressure, seat material and temperature rather than nominal size alone. External pipe loads should not be transferred through the compact wafer body.

Where the Valve Is Used

Typical duties include seawater utilities, desalination support systems, chlorine-related processing, marine piping, brine handling and selected chemical-transfer services. The short body is useful where installation length or weight is restricted.

Manufacturing and Inspection

Material certificates are checked against the body and trim. PMI may be carried out when the project requires grade confirmation. Dimensional inspection verifies face-to-face length, flange alignment and bore position. Hydrostatic shell and seat-leakage testing confirm pressure containment and shutoff, followed by an operating check.

Project Supply Across Africa

African Valve supplies this valve for marine, chemical and industrial projects across Africa. The enquiry should state the titanium grade, fluid composition, pressure, temperature, flange standard, seat material, actuation method and inspection scope.