Home- Products- Ball Valve- JIS Standard Floating Flange Ball Valve

JIS Standard Floating Flange Ball Valve

The ball of the floating ball valve is floating. When the valve is closed, the pressure of the fluid causes the ball to move toward the valve seat, thereby closely contacting the valve seat and forming a seal.

Inquire Now Next Product

The JIS Standard Floating Flange Ball Valve is a specific type of Ball Valve that operates on the floating ball principle. In this design, the ball is not fixed by trunnions; instead, it is held between two spring‑loaded or pressure‑energized seats. When the valve is closed, upstream fluid pressure pushes the ball slightly downstream, forcing it tightly against the downstream seat to create a reliable, bubble‑tight seal. When opened, the stem rotates the ball 90°, aligning its bore with the pipeline for full flow.

What sets this valve apart is its full compliance with Japanese Industrial Standards (JIS) – including JIS B2071 (design), JIS B2002 (face‑to‑face), JIS B2220 (flange dimensions), and JIS B2003 (inspection). It features RF (raised face) flanged ends, making it a drop‑in replacement for JIS‑specified piping systems commonly found in Japan, Southeast Asia, and other regions that adopt JIS standards.

Main Features of JIS Standard Floating Flange Ball Valve

Design Structure	Anti-static device/Anti-Blow out Fire Safe/ ISO 5211 Mounting Pad
Connection Ends	RF
Operation	Lever, Gear, Electric, Pneumatic...
Main Material	WCB, GG25, CF8, CF8M, SS321 etc...
Sealing Material	Soft seal (PTFE), PPL...
Applications	Solvent, acid, water, natural gas, suitable for harsh conditions etc...
Design & Manufacture	JIS B2071, ASME B16.34;
Face to Face	JIS B2002;
Flange Ends	JIS B2220;
Inspection & Testing	JIS B2003;
Leakage Class	Zero Leakage
Pressure Rating	10K/20K
Size Range	15A-350A

Main Advantage JIS Standard Floating Flange Ball Valve

Feature	Advantage
Floating ball design	The ball self‑adjusts under pressure, providing excellent sealing performance even after wear or thermal cycling.
Simple, compact structure	Fewer moving parts than trunnion or other complex designs, resulting in high reliability and lower maintenance.
Low fluid resistance	Full‑bore design (where applicable) minimizes pressure drop – important for energy‑sensitive systems.
Easy installation	Flanged RF ends with JIS B2220 drilling allow direct bolt‑up to existing JIS flanges without adapters.
High durability & corrosion resistance	Body materials include WCB, GG25, CF8, CF8M, and SS321, with soft seats (PTFE, PPL) that resist chemicals.
Low opening torque	Smooth ball surface and optimized seat compression reduce the force needed for operation – ideal for manual levers or small actuators.

Applications of JIS Standard Floating Flange Ball Valve

Solvent and acid lines – stainless steel bodies (CF8/CF8M) resist corrosion from chemicals like acetic acid, caustic soda, and organic solvents.
Water and natural gas distribution – zero‑leakage sealing (tested per JIS B2003) meets the requirements of municipal and utility systems.
Harsh working conditions – the valve is specified for outdoor installations, high‑humidity environments, and applications with moderate temperature fluctuations (PTFE seats up to 180°C, PPL up to 250°C).
Industrial plants in JIS‑adopting countries – Japan, South Korea, Taiwan, and many Southeast Asian nations where JIS B2220 flanges are standard.

Technical Specifications:

JIS Standard Floating Flange Ball Valve

Main Dimension: 10K

NPS	L (mm)	d (mm)	K (mm)	D (mm)	N-Z	C	T (mm)
15A	108	51	70	95	4-15	1	12
20A	117	56	75	100	4-15	1	14
25A	127	67	90	125	4-19	2	14
32A	140	76	100	135	4-19	2	16
40A	165	81	105	140	4-19	2	16
50A	178	96	120	155	4-19	2	16
65A	190	116	140	175	4-19	2	18
80A	203	126	150	185	8-19	2	18
100A	229	151	175	210	8-19	2	18
125A	356	182	210	250	8-23	2	20
150A	394	212	240	280	8-23	2	22
200A	457	262	290	330	12-23	2	22
250A	533	324	355	400	12-25	2	24
300A	610	368	400	445	16-25	3	24

Main Dimension: 20K

NPS	L (mm)	d (mm)	K (mm)	D (mm)	N-Z	C	T (mm)
15A	140	51	70	95	4-15	1	14
20A	152	56	75	100	4-15	1	16
25A	165	67	90	125	4-19	2	16
32A	178	76	100	135	4-19	2	18
40A	190	81	105	140	4-19	2	18
50A	216	96	120	155	8-19	2	18
65A	241	116	140	175	8-19	2	20
80A	283	132	160	200	8-23	2	22
100A	305	160	185	225	8-23	2	24
125A	381	195	225	270	8-25	2	26
150A	403	230	260	305	12-25	2	28
200A	502	275	305	350	12-25	2	30
250A	568	345	380	430	12-27	2	34
300A	648	395	430	480	16-27	3	36

Materials & Standards Compliance

Component	Available Materials
Body	WCB (carbon steel), GG25 (gray iron), CF8 (304 SS), CF8M (316 SS), SS321
Sealing (Soft seat)	PTFE (standard), PPL (for higher temperature)
Stem & ball	Stainless steel (typical, matched to body material)

Standards Compliance:

JIS B2071 – General rules for steel ball valves
JIS B2002 – Face‑to‑face dimensions
JIS B2220 – Steel pipe flanges
JIS B2003 – Valve inspection and testing

Why Chenyu for JIS Standard Valves

True JIS compliance – Every valve is designed, dimensioned, flange‑drilled, and tested strictly to JIS standards, ensuring seamless integration into existing Japanese‑spec plants.
Global export track record – Chenyu has shipped valves to Europe, America, South America, the Middle East, and Southeast Asia, earning a reputation for reliable quality and competitive pricing.
Wide material availability – Beyond the listed materials, Chenyu can supply duplex stainless steel, Alloy 20, and other special alloys upon request (per the about us page).
Short lead times – Normal sizes are kept in stock. Custom orders typically take 15–35 days depending on quantity.
Free sample – Available for qualified projects (as stated in the company’s FAQ).
100% inspection – Pre‑production samples and final inspection before shipment ensure zero‑leakage performance and JIS B2003 compliance.