STAINLESS STEEL SWING CHECK VALVE JIS 10K

The JIS 10K stainless steel swing check valve is an industrial valve designed to let flow pass in one direction only. The valve automatically blocks reverse flow that would damage pumps and pipelines. Built from stainless steel 304 combined with the Japanese-standard JIS 10K flange, the device meets the strict technical requirements of clean water, wastewater, chemical, and corrosive environments.

Technical overview of the JIS 10K stainless steel swing check valve

The stainless steel swing check valve is cast in one piece from stainless steel 304, so it performs durably in environments such as clean water, wastewater, mild chemicals, and other harsh environments. In particular, manufacturing to the Japanese JIS 10K standard gives the valve a very high mechanical finish, good pressure resistance, and tightness superior to ordinary valves on the market.

Below is a summary table of the product’s standard technical data, to help engineers and purchasing staff look up and cross-check for projects:

Detailed dimension table of the JIS 10K stainless steel swing check valve

General construction and operating principle of the stainless steel swing check valve

General construction of the JIS 10K stainless steel swing check valve

The JIS 10K stainless steel swing check valve has a fairly simple construction with 5 main parts:

• Body: The main load-bearing frame, cast in one piece from stainless steel 304, with 2 flanges at both ends to the JIS 10K standard. The body contains a cavity wide enough for the disc to open fully without obstructing the flow.
• Cover: Firmly joined to the valve body with stainless steel bolts. The cover lets engineers easily remove it to clean, inspect, or service the disc without taking the whole valve out of the system.
• Disc / swing flap: The directly operating opening/closing element, a round stainless steel disc. The disc swings freely about the hinge pin to open under flow pressure and drops down to close.
• Pin and hinge: A fixed pin connecting the disc to the valve body, made of a highly wear-resistant stainless alloy, letting the flap operate smoothly and accurately.
• Seat: The contact surface between the disc and the valve body is precisely machined (metal-to-metal or PTFE-lined), ensuring high tightness and completely preventing leakage when the valve is closed.

Automatic operating principle

The special feature of the JIS 10K stainless steel swing check valve is that it operates fully automatically, using only the thrust of the flow and the valve’s own gravity. When the pump system starts, the fluid pressure in the forward direction pushes the flap to swing about the hinge pin and lift open. The fully open design lets the flow pass through easily, minimizing the pressure drop in the pipeline.

Conversely, when the pump stops or there is reverse pressure flowing back, the disc immediately swings back down under its own weight, and the reverse-flow pressure presses it tightly against the seat ridge. This fast closing cuts off the flow at once, eliminating the dangerous water hammer impulse and protecting the pump impeller and the system from damage.

Outstanding advantages of the JIS 10K stainless steel swing check valve

• Outstanding corrosion resistance: Stainless steel 304/316 lets the valve work effectively in chemical environments such as paper mills, textile dyeing, industrial wastewater, seawater, and mildly acidic solutions, while limiting rust and corrosion.
• Matching standard flange connection: Flanges made to the JIS B2212/B2214 standards let the alignment and bolting to the pipeline be done quickly, accurately, and without misalignment.
• Energy saving: The valve operates 100% mechanically and automatically, with no electricity cost and no auxiliary control equipment.
• Low pressure drop: The fully opening flap design lets the flow pass through easily, minimizing any loss of flow or pressure in the pipeline.

Proper installation and maintenance guide for the check valve

For the JIS 10K stainless steel check valve to work durably and achieve maximum effectiveness, installation must follow the flow direction shown by the arrow cast directly on the valve body. Horizontal installation is preferred, to optimize the natural closing of the flap. If the valve is installed vertically, the flow must run from bottom to top; never install it where the flow runs from top to bottom.

Before tightening the flange bolts, clean out impurities and weld slag inside the pipeline to avoid dirt getting trapped and leaving the disc open. During operation, technicians should plan periodic maintenance by removing the cover to check the smoothness of the hinge pin and to clean the disc surface, making sure the valve keeps its tightness and works smoothly in the system.

Quotation for genuine JIS 10K stainless steel swing check valves

The price of the JIS 10K stainless steel swing check valve depends on the size and the stainless steel grade chosen, 304 or 316, as well as the actual quantity of each order.

An Phu Thanh is proud to be a specialized importer and direct distributor of industrial valves and pipe fittings, with full certificates of origin and quality. With a large warehouse ready to supply large quantities of products, together with a transparent warranty policy, we are committed to delivering the most optimal water industry materials solution for your project.

If you need consultation or a competitive quotation for stainless steel swing check valves, please contact us directly via Hotline / Zalo 0946 729 913 for quick support.