L-port (90° rotation) diverts flow from one inlet to one of two outlets – typically used for splitting or switching between lines. T-port (180° rotation) allows all three ports to be interconnected, enabling mixing of two flows into one, or full shut-off in a neutral position. Your choice depends on whether you need diversion (L) or mixing/shut‑off (T).

Yes. We manufacture threaded (NPT, BSPP), flanged (ANSI 150/300, PN10/16/40), buttweld, and socket weld ends. Minimum order quantity for custom ends is typically 50 units, but we can accommodate smaller quantities for repeat clients. We also offer hybrid connections (e.g., flanged one end, threaded other) for retrofit projects.

For standard materials (SS304/316) and sizes (1/4″ to 4″), lead time is 20–35 working days. Custom alloys, non-standard pressure classes, or special coatings may extend to 40–50 days. We send weekly progress photos and a final inspection video before shipping. Airfreight options available for urgent orders (7–10 days).

Absolutely. Every shipment includes: (1) Mill Test Report (MTR) per ASTM A351 for the casting heat, (2) Hydrostatic test certificate at 1.5x rated pressure, (3) Seat leakage test per API 598. 3rd‑party inspection (SGS, Intertek, BV) can be arranged at cost. PMI (Positive Material Identification) reports are available on request – we recommend it for critical service.

Our factory-direct pricing typically offers 25–50% savings compared to equivalent products from leading US or European manufacturers. The exact saving depends on material grade, size, and certification package. We recommend ordering free samples first to evaluate quality before committing to volume. Payment terms: T/T (30% deposit, 70% before shipment) or L/C at sight. For long‑term partners, net‑30 may be available.

Standard items: 50 pieces per size/material. For first-time OEM/custom projects, we offer a lower MOQ of 20 pieces to help you validate the design. Sample orders (1–2 pieces) are always welcome with full production drawings. We keep popular sizes in inventory – contact us for immediate availability.

Yes. Our standard SS316 ball valves with PTFE/RTFE seals are manufactured to FDA CFR Title 21 requirements for food contact surfaces. We can also supply valves with 60–80 RA surface finishes for clean-in-place (CIP) applications. 3‑A certification is available as a custom option with additional documentation and traceability fees. For dairy or beverage lines, we recommend our full‑port, cavity‑filled design to prevent bacterial entrapment.

We provide a standard 12-month warranty against manufacturing defects from date of shipment. For urgent issues, we offer video call support with our engineers within 24 hours. If a defect is confirmed, we replace the product via airfreight at no cost to you. We also maintain spare seal kits and actuator parts in our warehouse for fast dispatch. Long-term partners receive extended warranty and consignment stock options.