| Availability: | |
|---|---|
| Quantity: | |
API 6D 16" 150LB High Pressure Cast Steel Swing Check Valve
Main Features
Cast Steel Material: The valve body is made of high-quality cast steel (such as A216 WCB), which has high strength, high toughness, and good corrosion resistance, and can adapt to harsh working environments.
Large Diameter Design: With a diameter of 16 inches, it can meet the transportation requirements of large flow rates and is suitable for large-scale industrial pipeline systems.
150LB Pressure Rating: It can withstand a pressure of 150 pounds class, is suitable for medium and high-pressure working conditions, and ensures stable operation under high-pressure conditions.
Swing Type Structure: It adopts a swing type valve disc design. The valve disc is connected to the valve body through a hinge mechanism and automatically opens and closes relying on the pressure of the fluid. This structure makes the valve have low resistance when opening, good sealing performance when closing, and does not require external forces such as springs.
Flange Connection: It is equipped with standard flange connection ends that comply with the ASME B16.5 standard, facilitating quick and reliable connection with the pipeline system, and making installation and maintenance convenient.
Reliable Sealing Performance: The valve seat has a precisely machined sealing surface, and metal seals or soft sealing materials can be selected to ensure that the valve can achieve reliable sealing under various working conditions and prevent medium leakage.
Strong Maintainability: The valve design takes into account the convenience of maintenance. Some components such as the valve disc and valve seat can be replaced, which extends the service life of the valve and reduces maintenance costs.
Technical Specifications
Size: 1/2"~48" (DN15~DN1200)
Pressure Rating: 150LB~2500LB (PN20~PN420)
Working Temperature Range: -29℃~427℃
Applicable Media: Suitable for various media such as liquids, gases, and steam.
Design Standard: API 6D
Test Standard: API 598
Connection Method: Flange connection
Valve Body Material: Cast steel (such as A216 WCB)
Valve Disc Material: Options include cast steel, stainless steel, or alloy steel, etc.
Sealing Material: Metal seals, soft seals, etc. can be selected according to working conditions.
Application Fields
Petroleum and Natural Gas Industry: It is used in oil and gas transmission pipelines, natural gas processing facilities, etc. to prevent the backflow of media and ensure the safe operation of the pipeline systems.
Chemical Industry: In the process of chemical production, it is used to prevent the backflow of corrosive media and protect equipment and pipelines.
Water Treatment Industry: It is used in water supply systems, sewage treatment systems, etc. to ensure the one-way flow of water and prevent water hammer phenomena.
Energy Industry: In power plants, heating stations, and other places, it is used in pipeline systems for media such as steam and hot water to ensure the stable operation of the systems.
Competitive Advantage:
On Samples Buyer bear the air fee, but this fee will be reduced from order directly
On After Sales Free replacement if there is any quality problem
On Delivery Never delay delivery time
On Materials Ensure material pure
Ensure material pure
API 598 test durations by size, why the timer starts after the pressure settles, and what a 1.5 times shell test cannot tell you about service.
Pneumatic actuator failure modes and field diagnostics: air supply quality, diaphragm rupture, spring relaxation, torque margins and partial stroke testing.
How a butterfly valve disc is fixed to its stem: taper pins, pinless hubs and through shafts, the backlash each allows, and the failures they cause.
Steam PRV station design: critical pressure ratio, Kv sizing, 1/3-2/3 parallel turndown, series stations and safety valve sizing rules.
Why LNG ball valve seats that pass warm tests leak cold at -162°C: contraction arithmetic, cold preload, PCTFE vs PTFE, ISO 28921-2 and MSS SP-134 limits.
What API 607 proves: burn sequence, 7th-edition leak limits per NPS, cavity pressure rules, API 6FA vs ISO 10497, and the clauses buyers must check.
MSS SP-80 bronze valves: the class number is a saturated steam rating, not a pressure rating. Alloys, threads, lead-free rules and where bronze stops.
Stellite or tungsten carbide for erosive service: erosion angles, hardness ratios, HVOF vs weld overlay, the 500 C limit, and the clauses that win acceptance.
Valve coating is a defect-budget decision, not a product choice: ENP vs FBE vs sprayed aluminium, holiday arithmetic, CUI and the specs that win acceptance.
Temporary and start-up strainers for commissioning: placement, plate versus mesh, blowdown discipline and the removal record that proves it was pulled.
What MSS SP-25 marking really commits to: body symbols, three-symbol trim marking, melt identification and the certificate that closes the loop.
Why ball valves pass high-pressure seat tests and fail at 0.6 MPa: seat preload arithmetic, SPE and DPE seats, DBB vs DIB-1/DIB-2, and test-proofing specs.
RF, RTJ and butt-weld valve ends compared: how each joint seals, which duty suits it, and the four assembly errors that cause most joint leaks.
Why PTFE and PFA liners fail when the chemistry is right: permeation arithmetic, vacuum collapse, cold flow and the 11:1 expansion mismatch at the flange.
C95800 and C95500 are cast to ASTM B148; C63200 is wrought to ASTM B150. Aluminum and manganese levels decide strength, weldability and valve use.
Jacket heat load arithmetic, sulfur's 159 C viscosity trap, the separate jacket pressure test and the weld failures buyers discover in year five.
API 603 and API 600 both cover bolted bonnet gate valves, but wall thickness basis, class ceiling and casting rules decide which one you can actually buy.
ISO 5208 Rates A-G explained with real numbers, how API 598, API 6D and FCI 70-2 map across, and what metal seats can honestly achieve.
How to choose a forged or cast valve body: API 600 vs API 602 size limits, casting quality factor, NDT coverage, weld repair policy and cost crossovers.
How pressure seal bonnet valves work, why bolted bonnets stop at Class 900, seal ring materials, disassembly rules and the low-pressure leak signature.