ISO Blank Flange

ISO Flange Assembly Instructions

Optional fastener flanges are joined around the periphery with clamps.
Double claw clamps are used when a pair of OF flanges are joined (See diagram A.),
or single claw clamps are used to join an OF flange to a tapped nonrotatable on a pump or gate valve. (See diagram B.)
This fastening method allows the OF flange to be rotateforease of component alignment. Additionally, a rotatable bolt ring can be used to fasten an OF flange to a nonrotatable flange using bolts. (See diagram C.)
A retainer ring prevents the OF flange from slipping through the bolt ring. Nonrotatable ISO flanges are assembled with bolts.
(See diagram D.) They do not allow rotation of bolt holes on mating flanges to align components.

ISO-K Claw Clamp Blank Flange

*Material: SS304/SS316L

	Model for 304	Size(ISO/NW)	A/mm	B/mm	C/mm	D/mm	N.W./g
	FBB821S634	63	95	12	90	70	640
	FBB821S804	80	110	12	105	83	860
	FBB821S1003	100	130	12	125	102	1205
	FBB821S1254	125	155	12	150	127	1725
	FBB821S1604	160	180	12	175	153	2300
	FBB821S2004	200	240	12	235	213	4150
	FBB821S2504	250	290	12	285	261
	FBB821S3204	320	370	17	365	318
	FBB821S4004	400	450	17	445	400	21000
	FBB821S5004	500	550	17	545	501	31500
	FBB821S6304	630	690	22	685	651