CVC Surface Seal Coupling

The CVC face seal fittings are manufactured for UHP processes. Female threads are silver plated and rolled prevent galling and create reliable connections. Wetted areas available in EP and non-EP, with surface finished as fine as 5Ra. The leak test ports are located above the gasket line for easy testing.

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FEATURES

Female nut (NF): The female threading is silver plated to prevent galling and seizing for reliable tightening. In addition, the leak test ports (two locations) are positioned above the gasket line for easy verification of gasket installation and leak testing.
Gland (S): Finished to a smooth inner surface by KITZ SCT’s unique surface finish techniques including electropolishing.
Gasket (G): A standard nickel gasket provides excellent seal with the sleeve from tightening.
Male nut (NM): The use of rolled threading gives the male nuts strength and enables reliable connections.

WETTED AREA MATERIAL

SUS316, SUS316L, SUS316LE (Double melt material)

Product Selection

JUMP TO: Specifications Product Grade Product Code Key Product Selection

Product Details

Product Grade
Grade	STD			EP			SEP
Material	SUS316, SUS316L, SUS316LE (Double melt material)
Surface Roughness	≤ Rz 3.2 µm			≤ Rz 0.7 µm
	≤ Ra 0.5 µm / 20 µin			≤ Ra 0.13 µm / 5 µin
Polish	Mechanical Polished			Electro Polished
Cleaning	Degreasing + Precision cleaning
Packaging	Single bagged package			Double bagged package
1 All gaskets are single bagged package. Max.temperature and pressure may be referred to the table and graph below
Production Range Table
			SUS316			SUS316L		SUS316LE	NI
			Unpolished	STD	EP	STD	EP	SEP	EP
Gland	S	Gland	×	×	×	○	○	○	×
	SB	Blind Gland
	□S	Reducing Gland
Nut	NF	Female Nut	○	×	×	×	×	×	×
	NM	Male Nut
	NSM	Male Short Nut
	NFH	Female Nut (High-flow)
	NMH	Male Nut (High-flow)
	NBF	Female Blind Nut
	NBM	Male Blind Nut
Gasket	G	Gasket	×	×	×	×	×	○	○
	RG	Retainer Gasket
	BG	Blind Gasket
	BG-L□	Orifice Gasket
Union	UM	Male Union	×	○	○	Optional	Optional	×	×
	UF	Female Union	○	×	×	×	×	×	×
	UB	Bulkhead Union	×	○	Optional	×	×	×	×
	UBS	Bulkhead Union (Tube End)	×	×	×	○	○	Optional	×
	UE	Union Elbow	×	×	×	○	○	○	×
	UT	Union Tee
	UC	Union Cross
Double union	USFW	Double Female Union	×	×	×	○	○	○	×
	UEFW	Doubled Female Union Elbow
	UTFW	Double Female Union Tee
	UCFW	Double Female Union Cross
	USMW	Double Male Union
	UEMW	Double Male Union Elbow
	UTMW	Double Male Union Tee
	UCMW	Double Male Union Cross
Manifold	ME	Manifold Elbow
	MT	Manifold Tee	×	×	×	○	○	○	×
Note: Polish designator for the nuts, female unions, and gaskets are omitted from the model number for simplification purpose. *Gasket of 316LE:1/4”,1/2” are available
Temperature and Pressure Resistance
Sleeve Size					Maximum Operating Pressure (MPa(G))
Size	Outer Diameter		Thickness		42ºC	80ºC	150ºC	250ºC	350ºC
1/8"	3.18		0.7		59	53	45	39	36
1/4"	6.35		1		40	36	30	27	24
3/8"	9.53		1		25	23	19	17	15
1/2"	12.7		1.24		23	21	18	15	14
3/4"	19.05		1.24		15	13	11	10	9
[note] 1.Max Pressure in the table are calculated by each wall thickness. 2.Temperature above 300ºC, durability for re-assembly tend to decrease.

PRODUCT CODE KEY

Model	Size		Type of Product	Sleeve Dimensions	Space	Grade + Material
CVC	4	-	S	28		STD 316L
CVC - Metal Gasket Surface Seal Fittings	2: 1/8" 4: 1/4" 6: 3/8" 8: 1/2" 12: 3/4"		Gland S: Gland SB: Blind Gland □S: Reducing Gland Nut NF: Female Nut NM: Male Nut NSM: Male Short Nut NFH: Female Nut (High-flow) NMH: Male Nut (High-flow) NBF: Female Blind Nut NBM: Male Blind Nut Gasket G: Gasket RG: Retainer Gasket BG: Blind Gasket Union UM: Male Union UB: Bulkhead Union UBS: Bulkhead Union (Tube End) UF: Female Union UE: Union Elbow UT: Union Tee UC: Union Cross Double Union USFW: Double Female Union UEFW: Double Female Union Elbow UTFW: Double Female Union Tee UCFW: Double Female Union Cross USMW: Double Male Union UEMW: Double Male Union Elbow UTMW: Double Male Union Tee UCMW: Double Male Union Cross Manifold ME: Manifold Elbow MT: Manifold Tee	1/8": 12 22 27 1/4": 15 28 31 43 3/8": 16 28 45 1/2": 16 28 45 3/4": 52		316: Unpolished + SUS316 STD 316: Mechanical Polished Finish + SUS316 STD 316L: Mechanical Polished Finish + SUS316L EP 316: Electro Polished Finish + SUS316L EP 316L: Electro Polished Finish + SUS316L SEP 316LE: Electro Polished Finish + SUS316L (Double Melt Material) Gasket only NI: Electro Polished Finish + Pure nickel 316LE: Electro Polished Finish + SUS316LE (Double Melt Material) *Gasket of 316LE:1/4",1/2" are available Note: There is a space between the grade and the material.