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Technical data

Flange standard dimensions

Standard JIS 10K FF type Waterworks standard

Unit: mm

Nominal bore	JIS 10K, JIS B2239						Waterworks standard, JIS B2062
A	D	C	n-h	Bolt	(f)	(g)	D	C	n-h	Bolt	(f)	(g)
25	125	90	4-19	M16	1	67	Based on JIS 10K
32	135	100	4-19	M16	2	76	Based on JIS 10K
40	140	105	4-19	M16	2	81	Based on JIS 10K
50	155	120	4-19	M16	2	96	Based on JIS 10K
65	175	140	4-19	M16	2	116	Based on JIS 10K
80	185	150	8-19	M16	2	126	211	168	4-19	M16	3	125
100	210	175	8-19	M16	2	151	238	195	4-19	M16	3	152
125	250	210	8-23	M20	2	182	263	220	6-19	M16	3	177
150	280	240	8-23	M20	2	212	290	247	6-19	M16	3	204
200	330	290	12-23	M20	2	262	342	299	8-19	M16	3	256
250	400	355	12-25	M22	2	324	410	360	8-23	M20	3	308
300	445	400	16-25	M22	3	368	464	414	10-23	M20	4	362
350	490	445	16-25	M22	3	413	530	472	10-25	M22	4	414
400	560	510	16-27	M24	3	475	582	524	12-25	M22	4	466
450	620	565	20-27	M24	3	530	652	586	12-27	M24	4	518
500	675	620	20-27	M24	3	585	706	639	12-27	M24	4	572
600	795	730	24-33	M30	3	690	810	743	16-27	M24	4	676

Note:
	We manufacture valves with RF flanges (dimensions f, g ) for JIS 10K pipe flanges upon request.
	The flange thickness is based on our standard.

Piping examples
Installation in horizontal piping is standard. Please contact us about installation in vertical piping.
1.	Standard piping example
	(1)	It is not necessary to install a straight pipe at the rear of the Constant Flow Regulator Valve. When install a gate valve at the front of the Constant Flow Regulator Valve, install a straight pipe as shown. If you plan to install a flow meter, please install the designated straight pipe.	D=Nominal bore
	(2)	Install a piping within an angle of +/-3 degrees.
2.	When there is a bent pipe on the inlet side:
	(1)	When the bent pipe is parallel to the valve shaft: It is not necessary to install a straight pipe at the front or the rear of the valve.
	(2)	When the bent pipe is perpendicular to the valve shaft: Install a straight pipe as shown.	D=Nominal bore

Installation examples
1. Unit protection equipped
	Unit: mm Bore A B C D E F T H L 50 400 800 600 1500 150 195 125 2145 2250 80 400 800 600 1500 150 195 125 2145 2250 100 400 800 600 1500 150 195 125 2145 2250 150 400 800 600 1500 150 195 125 2145 2250 200 400 1100 900 1800 250 295 160 2945 2650 250 400 1100 900 1800 250 295 160 2945 2650 300 450 1050 900 2200 280 295 190 2975 3100 350 500 1000 900 2200 280 295 190 2975 3100 On-site construction time can be reduced by use of a ready-made knockdown manhole for protective construction. (Dimension C is changeable.) The above dimensions are in accordance with the National Uni-hole Industrial Association Standard.
2. On-site protection construction
	Unit: mm Bore A B H L 50 400 1500 1400 1200 80 400 1500 1400 1300 100 400 1500 1400 1400 150 400 1500 1400 1550 200 400 1500 1400 1800 250 400 1600 1500 2000 300 450 1600 1700 2200 350 500 1600 1800 2400 400 550 1900 2000 2500 450 750 1900 2500 2800 500 750 1900 2500 3000 600 800 2000 2700 3200

Specifications stated here may be subject to change without notice due to product improvement.

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