Superlok i-Fittings Tube & NPT Fitting

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Superlok i-Fitting and valves have a revolutionary, leak-free design that takes the guess work out of installing tube end fittings and valves.  Installers have experienced far too many leaks due to improper tightening procedures.  Over tightening and under tightening the compression nut is the biggest cause of failures.  To eliminate this problem, Superlok has a built-in gap gauge installed on every fitting. Now, an installer can simply tighten a fitting until the patented, built-in gap gauge pops off… for a perfect connection every time!

Superlok i-Fitting are the safest valve and fittings products in the instrumentation and control markets.  We are so confident in the Superlok, Zero Leak Technology, that we back all i -Fittings products with a lifetime guarantee against leaks or failures! 
Superlok Tube Fittings
Superlok Pipe Fittings
Instrumentation Valves

Superlok i-Fitting are the safest valve and fittings products in the instrumentation and control markets. We are so confident in the Superlok Zero Leak Technology, that we back all  - fitting products with a lifetime guarantee against leaks or failures

Superlok i-Fitting Tube fittings and valves | JIC Fittings | Ultra-High-Purity Fittings | DIN Fittings | Tubes | Coil | Flexible tube | Manifolds |  High Pressure

Superlok i-Fitting - Built in Gap Gauge in Every Fitting Instrumntation Valves, Tube Fittings & Pipe Fittings.

UNION
CONNECTOR
ELBOWS
AN TUBE
WELD END
TEE
STUB TUBE CONNECTOR
VENT PROTECTOR
O-RING SEAL
SUI | Tube Union
SBHUI | Bulkhead Union
SRUI | Reducing Union
SBHRUI | Reducing Bulkhead Union

SUI | Tube Union

SBHUI | Bulkhead Union

SRUI | Reducing Union

SBHRUI | Reducing Bulkhead Union
SMCI
SMCI-GM
SGMCI
SFCI
SGCI
SMCB
SFCB

SMCI

Male Connector

SMCI-GM

Male Connector Metal Gasket

SGMCI

Male Connector Bonded Gasket

SFCI

Female Connector

SGCI

Gauge Connector

SMCB

Male Bulkhead

SFCB

Female Bulkhead
SMEI
SHMEI
SUEI
SPHMEI
SPMEI
SFEI
SMEI
Male Elbow
SHMEI
Male 45 deg Elbow
SUEI
Union Elbow
SPHMEI
45 deg Positionable Elbow
SPMEI
Positionable Elbow
SFEI
Female Elbow
SAF
SAUI
SAA
SAF
AN Flare
SAUI
AN Union
SAA
AN Adapter
SPWCI
SMPWEI
SSWCI
SSWEI
SPWCI
Male Pipe Weld Connector
SMPWEI
Male Pipe Weld Elbow
SSWCI
Socket Weld Connector
SSWEI
Socket Weld Elbow
SUTI
SRUTI
SMBTI
SPMBTI
SMRTI
SPMRTI
SFBTI
SFRTI
SUCI
SUTI
Union Tee
SRUTI
Reducing Union Tee
SMBTI
Male Branch Tee
SPMBTI
Positionable Male Branch Tee
SMRTI
Male Run Tee
SPMRTI
Positionable Male Run Tee
SFBTI
Female Branch Tee
SFRTI
Female Run Tee
SUCI
Union Cross
SRI
SRB
SMA
SFA
SPC
SRPC
SRI
Reduce
SRB
Bulkhead Reducer
SMA
Male Adapter
SFA
Female Adapter
SPC
Port Connector
SRPC
Reducing Port Connector
SVP
SVP
Vent Protector
SOSCI
SOPCI
SSMCI
SOSCI
O-Seal Straight Thread
SOPCI
O-Seal Pipe Thread
SSMCI
SAE/MS Male Connector

Superlok i - fittings are the safest valve and fittings products in the instrumentation and control markets. We are so confident in the Superlok Zero Leak Technology, that we back all i - fitting products with a lifetime guarantee against leaks or failures.

Superlok i-Fitting - Built in Gap Gauge in Every Fitting Instrumntation Valves, Tube Fittings & Pipe Fittings. Superlok i-Fitting Tube fittings and valves | JIC Fittings | Ultra-High-Purity Fittings | DIN Fittings | Tubes | Coil | Flexible tube | Manifolds | High Pressure

ICN - Close Nipple
IHN - Hex Nipple
IHLN - Hex Long Nipple
IHRN - Hex Reducing Nipple
IA - Adapter
IRA - Reducing Adapter
IRHB - Reducing Hex Bushing
IHC - Hex Coupling
IHRC - Hex Reducing Coupling
IPG - ISO Parallel Gasket
IPP - Pipe Plug
IPC - Pipe Cap
Male NPT Threads

Part Number

NPT Pipe Size

Dimension (mm)

A

E

ICN - 2N

1/8

19.1

4.8

ICN - 4N

1/4

28.4

7.1

ICN - 6N

3/8

28.4

9.6

ICN - 8N

1/2

38.1

11.9

ICN - 12N

3/4

38.1

15.7

ICN - 16N

1

47.8

22.4

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Male NPT Threads

Part Number

NPT Pipe Size

Dimension (mm)

T* ISO/BSP Pipe Size A (ISO 7/1)

A

E

H

IHN - 2N

1/8

25.6

4.8

11.1

1/8

IHN - 4N

1/4

35.6

7.1

14.2

1/4

IHN - 6N

3/8

36.3

9.6

17.4

3/8

IHN - 8N

1/2

46.7

11.9

22.2

1/2

IHN - 12N

3/4

46.7

15.7

26.9

3/4

IHN - 16N

1

58.9

22.4

34.9

1

NOTE : In case of ISO/BSP(ISO 7/1) tapered pipe thread of T*, The part number should be “NR” instead of “N”
Example : IHN-8NR (ISO TATER THREAD)

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Male NPT to Male ISO Parallel Pipe Threads

Part Number

NPT Pipe Size

ISO/BSP Pipe Size (ISO 228)

Dimension (mm)

A

B

C

D

E

IHN - 2NG

1/8

1/8

27.7

7.1

13.7

4.1

14.2

IHN - 4NG

1/4

1/4

36.8

11.2

18.0

5.8

19.1

IHN - 6NG

3/8

3/8

37.6

11.2

21.6

7.9

22.2

IHN - 8NG

1/2

1/2

44.4

14.2

25.9

11.9

26.9

IHN - 12NG

3/4

3/4

49.0

15.7

32.0

15.7

33.3

IHN - 16NG

1

1

56.6

18.3

38.9

19.8

41.2

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Male NPT Threads

Part Number

NPT Pipe Size

Dimension (mm)

A

E

H

IHLN - 2N

1/8

*

4.8

11.1

IHLN - 4N

1/4

*

7.1

14.2

IHLN - 6N

3/8

*

9.6

17.4

IHLN - 8N

1/2

*

11.9

22.2

IHLN - 12N

3/4

*

15.7

26.9

IHLN - 16N

1

*

22.4

34.9

NOTE : The length of Nipple “A” is defined by user
Part Number Example : IHLN - 8N - 100L(length “A” : 100mm)

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Male NPT Threads

Part Number

NPT Pipe Size

Reduced Pipe Size

Dimension (mm)

A

E

H

IHRN 2 - 1N

1/8

1/16

25.6

3.0

11.1

IHRN 4 - 2N

1/4

1/8

31.0

4.8

14.2

IHRN 6 - 2N

3/8

1/8

31.8

4.8

17.4

IHRN 6 - 4N

3/8

1/4

36.3

7.1

17.4

IHRN 8 - 2N

1/2

1/8

37.3

4.8

22.2

IHRN 8 - 4N

1/2

1/4

41.9

7.1

22.2

IHRN 8 - 6N

1/2

3/8

41.9

9.6

22.2

IHRN12 - 4N

3/4

1/4

41.9

7.1

26.9

IHRN12 - 8N

3/4

1/2

46.7

11.9

26.9

IHRN16 - 4N

1

1/4

49.3

7.1

34.9

IHRN16 - 8N

1

1/2

54.1

11.9

34.9

IHRN16 -12N

1

3/4

54.1

15.7

34.9

NOTE : The length of Nipple “A” is defined by user
Part Number Example : IHLN - 8N - 100L(length “A” : 100mm)

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Female to Male NPT Threads

Part Number

NPT Pipe Size

Dimension (mm)

T* ISO/BSP Pipe Size A (ISO 7/1)

A

E

H

IA - 2N

1/8

27.9

4.8

14.2

1/8

IA - 4N

1/4

35.6

7.1

19.1

1/4

IA - 6N

3/8

38.4

9.6

22.2

3/8

IA - 8N

1/2

49.3

11.9

26.9

1/2

IA - 12N

3/4

51.3

15.7

33.3

3/4

IA - 16N

1

57.9

22.4

41.2

1

NOTE : In case of ISO/BSP(ISO 7/1) tapered pipe thread of T* The part number should be “NR” instead of “N”
Example : IA-8NR (ISO TATER THREAD)

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Female NPT to Male ISO Parallel Pipe Threads

Part Number

NPT Pipe Size

T* ISO/BSP Pipe Size A (ISO 7/1)

Dimension (mm)

A

B

C

E

H

IA - 2NG

1/8

1/8

25.1

7.1

13.7

4.1

14.2

IA - 4NG

1/4

1/4

33.5

11.2

18.0

5.8

19.1

IA - 6NG

3/8

3/8

35.8

11.2

21.6

7.9

22.2

IA - 8NG

1/2

1/2

44.2

14.2

25.9

11.9

IA - 12NG

3/4

3/4

48.0

15.7

32.0

15.7

33.3

IA - 16NG

1

1

53.3

18.3

38.9

19.8

41.2

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Female to Male NPT Threads

Part Number

Male Pipe Size

Female Pipe Size

Dimension (mm)

A

E

H

IRA 2 - 4N

1/8

1/4

32.0

4.8

19.1

IRA 2 - 6N

1/8

3/8

33.8

4.8

22.2

IRA 4 - 6N

1/4

3/8

38.1

7.1

22.2

IRA 2 - 8N

1/8

1/2

40.1

4.8

26.9

IRA 4 - 8N

1/4

1/2

44.7

7.1

26.9

IRA 6 - 8N

3/8

1/2

44.4

9.6

26.9

IRA 4 -12N

1/4

3/4

47.0

7.1

33.3

IRA 6 -12N

3/8

3/4

46.2

9.6

33.3

IRA 8 -12N

1/2

3/4

51.3

11.9

33.3

IRA 4 -16N

1/4

1

49.8

7.1

41.2

IRA 8 -16N

1/2

1

54.9

11.9

41.2

IRA12 -16N

3/4

1

55.1

15.7

41.2

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Female to Male NPT Threads

Part Number

Male Pipe Size

Female Pipe Size

Dimension (mm)

A

E

H

IRHB 4 - 2N

1/4

1/8

26.9

7.1

14.2

IRHB 6 - 2N

3/8

1/8

21.8

8.6

17.4

IRHB 6 - 4N

3/8

1/4

30.2

9.6

19.1

IRHB 8 - 2N

1/2

1/8

27.4

8.6

22.2

IRHB 8 - 4N

1/2

1/4

27.4

11.4

22.2

IRHB 8 - 6N

1/2

3/8

35.8

11.9

22.2

IRHB12 - 4N

3/4

1/4

27.4

11.4

26.9

IRHB12 - 6N

3/4

3/8

27.4

15.0

26.9

IRHB12 - 8N

3/4

1/2

41.4

15.7

26.9

IRHB16 - 4N

1

1/4

34.8

11.4

34.9

IRHB16 - 6N

1

3/8

34.8

15.0

34.9

IRHB16 - 8N

1

1/2

34.8

18.5

34.9

IRHB16 - 12N

1

3/4

47.0

22.4

34.9

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Female NPT Threads

Part Number

NPT Pipe Size

Dimension (mm)

A

E

H

IHC - 2N

1/8

20.6

8.6

14.2

IHC - 4N

1/4

30.2

11.4

19.1

IHC - 6N

3/8

33.3

15.0

22.2

IHC - 8N

1/2

39.6

18.5

26.9

IHC - 12N

3/4

41.1

23.9

33.3

IHC - 16N

1

50.8

29.7

41.2

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Female to Male NPT Threads

Part Number

Pipe Size

Reduced Pipe Size

Dimension (mm)

A

E

H

IHRC 4 - 2N

1/4

1/8

31.0

8.6

19.1

IHRC 6 - 4N

3/8

1/4

35.1

11.4

22.2

IHRC 8 - 2N

1/2

1/8

39.6

8.6

26.9

IHRC 8 - 4N

1/2

1/4

44.4

11.4

26.9

IHRC 8 - 6N

1/2

3/8

45.2

15.0

26.9

IHRC12 - 4N

3/4

1/4

46.0

11.4

33.3

IHRC12 - 8N

3/4

1/2

52.3

18.5

33.3

IHRC16 - 8N

1

1/2

55.6

18.5

41.2

IHRC16 -12N

1

3/4

57.2

23.9

41.2

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ISO Parallel Copper Gaskets

Part Number

Pipe Size

Dimension (mm)

E

H

T

IPG - 2

1/8

10.2

1.0

16.0

IPG - 4

1/4

13.4

1.5

19.5

IPG - 6

3/8

17.0

1.5

24.0

IPG - 8

1/2

21.2

1.5

29.0

IPG - 12

3/4

27.2

2.0

34.5

IPG - 16

1

34.0

2.0

42.0

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Female NPT Threads

Part Number

Pipe Size

Dimension (mm)

A

H

IPP - 2N

1/8

19.1

11.1

IPP - 4N

1/4

24.4

14.2

IPP - 6N

3/8

25.1

17.4

IPP - 8N

1/2

30.7

22.2

IPP - 12N

3/4

30.7

26.9

IPP - 16N

1

38.1

34.9

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Female NPT Threads

Part Number

Pipe Size

Dimension (mm)

A

H

IPC - 2N

1/8

19.1

14.2

IPC - 4N

1/4

23.1

19.1

IPC - 6N

3/8

26.2

22.2

IPC - 8N

1/2

34.0

26.9

IPC - 12N

3/4

36.6

33.3

IPC - 16N

1

41.1

41.2

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SBV120H Series
SBVI210 Series
SBVFI360 Series
SBVHI360 Series
SWBI320 Series
SGBV / SGBV2 Series
Integral Bar Stock Bonnet Needle Valve SBNVI Series
Compression End Check Valves | SHCV SERIES
SOCV SERIES
Relief Valves | SRVL Series
Relief Valves | SRVH Series
Plug Valves | SPV130 Series
Micron Tee Filter | STF Series
Micron Inline Filter | SIF Series
SBV120H Series
Pressure Rating Temperature Rating Body Material Port Connections Orifice

3000psig (206bar)@70°F (21°C)

50 to 150°F (10 to 65°C) with PTFE seat and packing

316 stainless steel and Brass

1/16˝ to 3/4˝ and 3mm to 12mm

0.052˝ and 0.406˝ (1.3mm to 10.3mm)
SBVI210 Series
Pressure Rating Body Material Port Connections Orifice

1000psig (69bar)@70°F (21°C)

316 stainless steel and Brass

1/4˝ to 1˝ and 6mm to 16mm

5.0mm to 16.0mm
SBVFI360 Series
Pressure Rating Temperature Rating Body Material Body Configurations Port Connections

6000psig (413bar)@70°F (21°C) with standard PCTFE seat

-65 to 350 °F (-54 to 177°C) with standard PCTFE seat

316 stainless steel

Two - way and Three - way

1/16˝ to 3/4˝ and 4mm to 16mm Variety of end connection
SBVHI360 Series
Pressure Rating Temperature Rating Body Material Port Connections Orifice

6000psig (414bar)@70°F (21°C)

-22 to 265°F (-30 to 130°C) with PVDF seat
-65 to 500°F (-54 to 260°C) with PEEK seat

316 stainless steel and Brass

1/4˝ to 1˝ and 6mm to 25mm

10.0mm to 19.0mm
SWBI320 Series
Pressure Rating Temperature Rating

3000psig (206bar)@100°F (37°C)

-20 to 450°F (-28 to 232°C) with PVDF seat
SGBV / SGBV2 Series
Maximum Working Pressure Rating Temperature Rating Port Connections Orifice

6000 psig (413 bar) @100°F(38°C)

-65 to 450°F (-54 to 232 °C) with PTFE packing

316 Stainless Steel

0.125” (3.2mm), 0.250” (6.4mm)
Integral Bar Stock Bonnet Needle Valve SBNVI Series
Pressure Rating Temperature Rating Body Material Orifice

6000psig (413bar)@100°F (38°C)

-65 to 450°F (-54 to 232°C) with PTFE packing and up to 600°F (315°C) with PEEK packing

316 stainless steel and Alloy400

0.17˝ and 0.25˝ (4.3mm and 6.4mm)
SHCV SERIES
Series Orifice (mm) Working and Back Pressure @70°F (20°C) Flow Coefficient Cv Nominal Cracking Pressure

SHCV1

4.8

6000psig (413bar)

0.67

1/3, 1, 5, 10, 25 psig
(0.02, 0.06, 0.34, 0.68, 1.7 bar)

SHCV2

7.8

6000psig (413bar)

1.80

SHCV3

15.0

5000psig (344bar)

4.70
SOCV SERIES
Nominal Cracking Pressure Maximum Working Pressure at 70°F (20°C) Maximum Back Pressure at 70°F (20°C) Flow Coefficient (Cv) Temperature Rating

1/3, 1, 10 and 25psig (0.02, 0.06, 0.68,1.7bar)

3000psig (206bar)

3000psig (206bar)

SOCV1 / SOCV2 : 0.35
SOCV3 / SOCV4 : 1.20

VITON O-ring : -10°F to 375°F (-23°C to 190°C )
NBR O-ring : -10°F to 250°F (-23°C to 121°C )
(add “N” to the end of ordering number)
SRVL Series
Maximum working pressure Cracking pressure range Orifice size

300 psig (20.6 bar)

10~250 psig (0.69~17.2 bar)

4.8mm
SRVH Series
Maximum working pressure Cracking pressure range Orifice size

6000 psig (413 bar)

225~6000 psig (15.5~414 bar)

4.8mm
SPV130 Series
Pressure Rating Temperature Rating Body Materials

3000 psig (206bar)@100°F (37°C)

-10°F to 400°F (-23°C to 204°C )

316 stainless steel
STF Series
Maximum operating pressure Operating temperature range

6000 psi (414bar) @ 70°F (21 °C)

40°F to 250°F (- 40°C to 121°C)
SIF Series
Maximum operating pressure Operating temperature range End connections

3000 psi @ 70°F (21°C)

: -20°F to 900°F (-28°C to 482°C )

1/8 to 1/2 in. and 3 to 10mm