YDK LEVER-OPERATED BUTTERFLY VALVE | MODEL KBF(WH)-16

The YDK lever-operated butterfly valve, Model KBF(WH)-16, is a quick-acting shut-off valve designed for water supply and drainage lines, fire protection systems, and HVAC, as well as process water pipelines with diameters from DN50 to DN200. The product has a compact wafer-type design that allows flexible installation between two standard flanges without taking up much space or adding load to the pipe supports.

Construction and materials of the YDK lever-operated butterfly valve KBF(WH)-16

Unlike gate-type shut-off valves, the YDK butterfly valve operates by a 90° rotation of the disc around a fixed shaft. The durability and pressure resistance of the product are optimized by the following specialized components:

• Body: Cast from cast iron with good mechanical pressure resistance. The surface is coated with electrostatic epoxy paint to resist rust in damp pump rooms and basements.
• Disc: Available in ductile iron (DI), stainless steel 304 (CF8), or stainless steel 316 (CF8M), with a polished surface finish. The aerodynamically (hydrodynamically) optimized disc profile minimizes pressure loss and pressure drop along the pipeline.
• Stem: Made of stainless steel (SS) that withstands high torque, transmitting motion from the lever to the disc smoothly.
• Seat (sealing liner): Flexibly supplied in EPDM or NBR rubber that wraps fully around the valve bore, providing absolute Class A tightness and also serving as the flange gasket when the valve is connected.
• Sleeve (bushing): Made of a high-wear-resistance polymer, which locates the stem and reduces resistance when rotating the disc.
• Lever handle: Made of steel / CI (cast iron), combined with a multi-position serrated plate, allowing the technician to easily operate the lever or lock the position to regulate the flow.

Dimension table of the YDK lever-operated butterfly valve

The specifications of YDK products in this catalog are subject to change without prior notice.

Operating advantages of the YDK lever-operated butterfly valve

• Instant opening and closing: The lever-operated butterfly valve moves from FULLY OPEN to FULLY CLOSED with a single 90° lever movement. This valve is well suited to locations where a pipeline must be isolated in an emergency.
• Space saving: The face-to-face length (L) is extremely short compared with a gate valve of the same size, significantly reducing the weight on the pipeline. It also saves installation space at meter clusters and basement water distribution stations.
• Cost saving: Compared with other shut-off valves of the same size, the lever-operated butterfly valve is cheaper, reducing the initial investment cost.

Technical note on selecting butterfly valves: The lever-operated butterfly valve is operated by direct hand force. Therefore, this valve type is optimized only for sizes up to DN200. For pipelines of DN250 and above, the torque generated by water pressure on the disc is very high, and contractors should switch to the YDK gear-operated (handwheel) butterfly valve to ensure operating safety.

Purchasing and quotation process for YDK lever-operated butterfly valves at An Phu Thanh 

To support quantity takeoff, cost estimation, and material procurement for projects, An Phu Thanh provides a direct quotation process for the YDK lever-operated butterfly valve range:

1. Receiving requirements: Our staff will contact you to collect the bill of quantities (DN size, quantity, working pressure PN10/16) and the delivery location.
2. Confirming configuration and availability: The sales department checks warehouse stock, packaging specifications, and the shipping method.
3. Issuing the quotation: We provide competitive unit prices directly from the importer, including discount policies based on order value and the validity period of the quotation.
4. Delivery and accompanying documents: Goods are delivered right to the project site together with the full set of CO, CQ, Packing List, and VAT invoice.

To receive the best quotation for the YDK lever-operated butterfly valve, Model KBF(WH)-16, for your project, please contact An Phu Thanh via Hotline / Zalo: 0946 729 913. Our team is always ready to support you!