CF Bored Blank Flange

CF FLANGE SERIES

CF flanges are available with tapped or untapped holes. Tapped flanges are available in UNC/UNF or metric threads. Tapped flanges have through holes, so bolts may protrude slightly from the back of the flange when fastened to an untapped flange. Untapped CF flanges can be fastened to each other with stainless steel bolts and hex nuts or plate nuts. Plate nuts center themselves over two adjacent holes and can be held in place with one finger while the bolts are tightened. They are available for most flange sizes from 1 1/3 to 10 inch (33.96-254mm) ODs. As an alternative to hex head bolts, 12-point bolts are available for CF flanges from 2 3/4 to 10 inch (33.96 to 354mm) ODs.Silver plated bolts eliminate the need for anti-seize compound in clean room environments.

Assembly Instructions for CF Flanges

1. Apply a small amount of high temperature anti-seize compound to the bolt threads.

2. Check that both flange surfaces are clean and sealing edges are free from nicks and scratches.

3. Using clean, lint free gloves, unpack gasket.

4. Place gasket in the knife edege counterbore of nonrotatable flange.

5. Align the mating hole pattern and leak test grooves.

6. Install the proper bolts and tighten had tight. Check to see that the flange faces are parallel.

7. Tighten the bolts 1/4 to 1/2 turns using a star pattern until the flange faces are metal to metal.

8. Torque the fasteners to the listed value using the same pattern.

Torque Specifications

CF Bored Flange

*Material: SS304/SS316L

*Tapped and Through Holes

Thru Holes

	Model for 304	Size	A(Inch/mm)	B(Inch/mm)	C(Inch/mm)	D(Inch/mm)	Bolt Hole		No.
							Dia	No
	GWF011F160503	CF16-1/2''	1.33''/33.8	0.505''/12.83	0.505''/12.83	0.3''/7.6	0.172''/4.4mm	6	1.062''/26.97
	GWF011F160754	CF16-3/4''	1.33''/33.8	0.755''/19.2	0.63''/16	0.3''/7.6	0.172''/4.4mm	6	1.062''/26.97
	GWF011F251004	CF25-1''	2.12''/53.8	1.01''/25.65	0.875''/22.1	0.47''/11.9	0.265''/6.7mm	6	1.625''/41.28
	GWF011F350754	CF35-3/4''	2.75''/70	0.755''/19.2	0.63''/16	0.5''/12.7	0.265''/6.7mm	6	2.312''/58.72
	GWF011F351004	CF35-1''	2.75''/70	1.01''/25.65	0.875''/22.1	0.5''/12.7	0.265''/6.7mm	6	2.312''/58.72
	GWF011F351504	CF35-1.5''	2.75''/70	1.51''/38.35	1.375''/34.9	0.5''/12.7	0.265''/6.7mm	6	2.312''/58.72
	GWF011F501504	CF50-1.5''	3.38''/85.7	1.51''/38.35	1.375''/34.9	0.62''/15.75	0.332''/8.43mm	8	2.85''/72.39
	GWF011F502004	CF50-2''	3.38''/85.7	2.01''/51.05	1.875''/47.63	0.62''/15.75	0.332''/8.43mm	8	2.85''/72.39
	GWF011F632504	CF63-2.5''	4.5''/114.3	2.51''/63.75	2.375''/60.33	0.68''/17.4	0.332''/8.43mm	8	3.628''/92.15
	GWF011F802504	CF80-2.5''	4.62''/117.5	2.51''/63.75	2.375''/60.33	0.75''/19.1	0.332''/8.43mm	10	4.03''/102.4
	GWF011F803004	CF80-3''	4.62''/117.5	3.01''/76.45	2.875''/73.02	0.75''/19.1	0.332''/8.43mm	10	4.03''/102.4
	GWF011F1004004	CF100-4''	6''/152.4	4.01''/101.85	3.875''/98.42	0.78''/19.9	0.332''/8.43mm	16	5.128''/130.25
	GWF011F1606004	CF160-6''	8''/203.2	6.02''/152.9	5.835''/148.2	0.88''/22.3	0.332''/8.43mm	20	7.128''/181.05
	GWF011F2008004	CF200-8''	10''/254	8.02''/203.7	7.834''/199	0.97''/24.6	0.332''/8.43mm	24	9.128''/231.85
	GWF011F25010004	CF250-10''	12''/304	10.03''/254.5	9.75''/247.65	1.12''/28.45	0.332''/8.43mm	32	11.181''/283.97

Metric Thread

	Model for 304	Size	A(Inch/mm)	B(Inch/mm)	C(Inch/mm)	D(Inch/mm)	Metric Thread		PCD(Inch/mm)
							Thread	No
	GWF01M1F160504	CF16-1/2''	1.33''/33.8	0.505''/12.83	0.505''/12.83	0.3''/7.6	M4	6	1.062''/26.97
	GWF01M1F160754	CF16-3/4''	1.33''/33.8	0.755''/19.2	0.63''/16	0.3''/7.6	M4	6	1.062''/26.97
	GWF01M1F251004	CF25-1''	2.12''/53.8	1.01''/25.65	0.875''/22.1	0.47''/11.9	M6	6	1.625''/41.28
	GWF01M1F350754	CF35-3/4''	2.75''/70	0.755''/19.2	0.63''/16	0.5''/12.7	M6	6	2.312''/58.72
	GWF01M1F351004	CF35-1''	2.75''/70	1.01''/25.65	0.875''/22.1	0.5''/12.7	M6	6	2.312''/58.72
	GWF01M1F351504	CF35-1.5''	2.75''/70	1.51''/38.35	1.375''/34.9	0.5''/12.7	M6	6	2.312''/58.72
	GWF01M1F501504	CF50-1.5''	3.38''/85.7	1.51''/38.35	1.375''/34.9	0.62''/15.75	M8	8	2.85''/72.39
	GWF01M1F502004	CF50-2''	3.38''/85.7	2.01''/51.05	1.875''/47.63	0.62''/15.75	M8	8	2.85''/72.39
	GWF01M1F632504	CF63-2.5''	4.5''/114.3	2.51''/63.75	2.375''/60.33	0.68''/17.4	M8	8	3.628''/92.15
	GWF01M1F802504	CF80-2.5''	4.62''/117.5	2.51''/63.75	2.375''/60.33	0.75''/19.1	M8	10	4.03''/102.4
	GWF01M1F803004	CF80-3''	4.62''/117.5	3.01''/76.45	2.875''/73.02	0.75''/19.1	M8	10	4.03''/102.4
	GWF01M1F1004004	CF100-4''	6''/152.4	4.01''/101.85	3.875''/98.42	0.78''/19.9	M8	16	5.128''/130.25
	GWF01M1F1606004	CF160-6''	8''/203.2	6.02''/152.9	5.835''/148.2	0.88''/22.3	M8	20	7.128''/181.05
	GWF01M1F2008004	CF200-8''	10''/254	8.02''/203.7	7.834''/199	0.97''/24.6	M8	24	9.128''/231.85
	GWF01M1F25010004	CF250-10''	12''/304	10.03''/254.5	9.75''/247.65	1.12''/28.45	M8	32	11.181''/283.97

UNC Thread

	Model for 304	Size	A(Inch/mm)	B(Inch/mm)	C(Inch/mm)	D(Inch/mm)	UNC Thread		PCD(Inch/mm)
							Thread	No
	GWF01T1F160504	CF16-1/2''	1.33''/33.8	0.505''/12.83	0.505''/12.83	0.3''/7.6	8-32	6	1.062''/26.97
	GWF01T1F160754	CF16-3/4''	1.33''/33.8	0.755''/19.2	0.63''/16	0.3''/7.6	8-32	6	1.062''/26.97
	GWF01T1F251004	CF25-1''	2.12''/53.8	1.01''/25.65	0.875''/22.1	0.47''/11.9	1/4-28	6	1.625''/41.28
	GWF01T1F350754	CF35-3/4''	2.75''/70	0.755''/19.2	0.63''/16	0.5''/12.7	1/4-28	6	2.312''/58.72
	GWF01T1F351004	CF35-1''	2.75''/70	1.01''/25.65	0.875''/22.1	0.5''/12.7	1/4-28	6	2.312''/58.72
	GWF01T1F351504	CF35-1.5''	2.75''/70	1.51''/38.35	1.375''/34.9	0.5''/12.7	1/4-28	6	2.312''/58.72
	GWF01T1F501504	CF50-1.5''	3.38''/85.7	1.51''/38.35	1.375''/34.9	0.62''/15.75	5/16-24	8	2.85''/72.39
	GWF01T1F502004	CF50-2''	3.38''/85.7	2.01''/51.05	1.875''/47.63	0.62''/15.75	5/16-24	8	2.85''/72.39
	GWF01T1F632504	CF63-2.5''	4.5''/114.3	2.51''/63.75	2.375''/60.33	0.68''/17.4	5/16-24	8	3.628''/92.15
	GWF01T1F802504	CF80-2.5''	4.62''/117.5	2.51''/63.75	2.375''/60.33	0.75''/19.1	5/16-24	10	4.03''/102.4
	GWF01T1F803004	CF80-3''	4.62''/117.5	3.01''/76.45	2.875''/73.02	0.75''/19.1	5/16-24	10	4.03''/102.4
	GWF01T1F1004004	CF100-4''	6''/152.4	4.01''/101.85	3.875''/98.42	0.78''/19.9	5/16-24	16	5.128''/130.25
	GWF01T1F1606004	CF160-6''	8''/203.2	6.02''/152.9	5.835''/148.2	0.88''/22.3	5/16-24	20	7.128''/181.05
	GWF01T1F2008004	CF200-8''	10''/254	8.02''/203.7	7.834''/199	0.97''/24.6	5/16-24	24	9.128''/231.85
	GWF01T1F25010004	CF250-10''	12''/304	10.03''/254.5	9.75''/247.65	1.12''/28.45	5/16-24	32	11.181''/283.97