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Instrumentation
Pipe Fittings
Pipe Fittings ∙
Thread Information
Thread Information Threads of many different kinds are used for different purposes in small piping components. The followings are the most common types of pipe threads.
1. NPT Tapered Pipe Threads
∙60。Thread Angle ∙Taper Angle 1。47’ ∙Truncation of root and crest are flat. ∙Pitch measured in inches.
NPT(National Pipe Tapered) is made to specifications outlined in ANSI B1. 2. This is the pipe thread used on the pipe end.
2. ISO 7/1 Tapered Pipe Threads
∙55�Thread Angle ∙Taper Angle 1�47′ ∙Truncation of root and crest are round. ∙Pitch measured in millimeters.
International Organization For Standards(ISO 7/1) Tapered.(P.T) ISO tapered threds are equivalent to DIN 2999. BSP TR, JIS B0203, R 1/8 and R 1/4 Keg. In application ISO threads are used similar to NPT threads. However, care should be used that ISO and NPT threads are not mixed. ISO threads have a 55。angle versus 60。 for NPT. Thread pitch is usually measured in millimeters but may be expressed in inch. In many sizes the threads-per-inch are different and the root and crest configurations are different from NPT.
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UNION METAL INDUSTRIAL CO., LTD.
3. ISO 228/1 Parallel Pipe Threads
∙55� Thread Angle ∙Diameter measured in inches. ∙Truncation of root and crest are round. ∙Pitch measured in inches.
International Organization For Standards(ISO 228/1) paralle(PF) ISO Parallel threads are equivalent to DIN ISO 228/1, BSP PL, JIS B0202, R 1/8 and R 1/4. These pipe threads are similar in configuration to 7/1 threads except there is no taper. Therefore do not work by thread interference like the tapered pipe threads of ISO 7/1 or NPT. A gasket or O-Ring is normaly used to seal into the parallel female threaded component.
Comparison Chart Pipe Threads Included Nominal Threads Thread Angle Size Per inch 1/16” NPT 27 60。 ISO 28 55。 1/8” NPT 27 60。 ISO 28 55。 1/4” NPT 18 60。 ISO 19 55。 3/8” NPT 18 60。 ISO 19 55。 1/2” NPT 14 60。 ISO 19 55。 3/4” NPT 14 60。 ISO 14 55。 1” NPT 11-1/2 60。 ISO 11 55。 1-1/4” NPT 11-1/2 60。 ISO 11 55。 1” NPT 11-1/2 60。 ISO 11 55。 1-1/4” NPT 11-1/2 60。 ISO 11 55。
Pitch
.037” .036” .037” .036” .0556” .053” .0556” .053” .0714” .071” .0714” .071” .087” .091” .087” .091” .087” .091” .087” .091”
Pipe O.D.
.312” .312” .405” .398” .540” .535” .675” .672” .840” .843” 1.050” 1.060” 1.315” 1.331” 1.660” 1.669” 1.315” 1.331” 1.660” 1.669”
Pipe Fittings ∙
Pressure Ratings/How to Order
Pressure Ratings(psi) NPT or PT(ISO 7/1) Size
Male
Female
Male
1/8” 1/4” 3/8” 1/2” 3/4” 1”
9400 7500 7300 7200 6800 5000
6100 6200 5000 4800 4300 4100
5000 4000 3900 3800 3600 2600
316SS
Brass Female
3200 3300 2600 2400 2300 2200
Working pressures calcurated in accordance with Power Piping Code ANSI B 31.1
How to Order
P Pipe Fittings
HRN -
08 - 04 N - SS Pipe Size (1/2”)
Fittings Type Hex Reducing Nipple
Pipe Size Thread Type (NPT) (1/4”)
SS = 316 Stainless Steel BS = Brass CS = Carbon Steel MO = Monel I N = Inconel
Thread Designations
Pipe Thread Designations Nom. Size
1/8
1/4 3/8
1/2
3/4
1
Designation
02
04
08
12
16
06
Materials
N : American National Standard Taper Pipe Threads(NPT : ANSI B1.20.1) R : Taper Pipe Threads(PT : JIS BO203, ISO 7/1)
UNION METAL INDUSTRIAL CO., LTD.
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Pipe Fittings ∙
INDEX
INDEX Male Pipe to Male Pipe PART
ITEM
Close Nipple
Female Pipe to Female Pipe Page
5
PCN Hex Nipple
5
PHN Hex Long Nipple
5
PHLN Hex Reducing Nipple
6
PHRN Long Nipple
6
PLN Male Elbow
7
PME
7
PMT
ITEM
Reducing Coupling
9
PRC Female Elbow
9
PFE Female Tee
9
PFT Union Ball Joints
9
PBJ Female Pipe to Welded Systems ITEM
Coupling S.W Type
Adapter
PA Reducing Adapter
PRA Reducing Bushing
PRB Street Elbow
PSE Street Tee
PST Branch Tee
PBT
UNION METAL INDUSTRIAL CO., LTD.
10
PRCW Special Coupling
7
PSC
7
Components PART
8
Pipe Cap
PCP 8
Pipe Plug
PPG 8 8
Page
10
Reducing Coupling S.W Type
Page
Page
9
PC
PCW
Female Pipe to Male Pipe
4
ITEM
Coupling
PART
Male Tee
PART
PART
10
ITEM
Page
10 10
Pipe Fittings ∙ PCN/PHN/PHLN Close Nipple
PCN
Hex Nipple
PHN
Hex Long Nipple
PHLN
Connects Female Pipe To Female Pipe Part No.
Pipe Size
Dimensions
PT,NPT
A
E
PCN-02
1/8
19.1
4.8
PCN-04
1/4
28.4
7.0
PCN-06
3/8
28.4
10.0
PCN-08
1/2
38.1
12.0
PCN-12
3/4
38.1
16.0
PCN-16
1
47.8
22.0
Connects Female Pipe To Female Pipe Part No.
Dimensions
Pipe Size PT,NPT
A
E
F
PHN-02
1/8
25
4.8
7/16
PHN-04
1/4
35
7.0
9/16
PHN-06
3/8
36
10.0
11/16
PHN-08
1/2
47
12.0
7/8
PHN-12
3/4
47
16.0
1-1/16
PHN-16
1
59
22.0
1-3/8
Connects Female Pipe To Female Pipe Part No. PHLN-02-1.5 PHLN-02-2.0 PHLN-02-2.5 PHLN-02-3.0 PHLN-02-4.0 PHLN-04-1.5 PHLN-04-2.0 PHLN-04-2.5 PHLN-04-3.0 PHLN-04-4.0 PHLN-04-6.0 PHLN-06-2.0 PHLN-06-3.0 PHLN-06-4.0 PHLN-08-2.0 PHLN-08-3.0 PHLN-08-4.0 PHLN-08-6.0 PHLN-12-3.0 PHLN-12-4.0 PHLN-16-3.0 PHLN-16-4.0
Dimensions
Pipe Size PT,NPT
1/8
1/4
3/8
1/2
3/4 1
A 40 50 65 75 100 40 50 65 75 100 150 50 75 100 50 75 100 150 75 100 75 100
E
F
4.8
7/16
7.0
9/16
10.0
11/16
12.0
7/8
16.0
1-1/16
22.0
1-3/8
Note : Dimensions are reference only, subject to change without prior notice.
UNION METAL INDUSTRIAL CO., LTD.
5
Pipe Fittings ∙
PHRN/PLN
Hex Reducing Nipple
PHRN
Connects Female Pipe To Female Pipe Part No. PHRN-04-02
Long Nipple
PLN
Pipe Size
Dimensions
P-PT,NPT
P1-PT,NPT
A
E
F
1/4
1/8
31
4.8
9/16
PHRN-06-04
3/8
1/4
36
7.0
11/16
PHRN-08-04
1/2
1/4
42
7.0
7/8
PHRN-08-06
1/2
3/8
42
10.0
7/8
PHRN-12-06
3/4
3/8
44
10.0
1-1/16
PHRN-12-08
3/4
1/2
49
12.0
1-1/16
PHRN-16-08
1
1/2
54
12.0
1-3/8
PHRN-16-12
1
3/4
54
16.0
1-3/8
Connects Female Pipe To Female Pipe Part No. PLN-02-1.5 PLN-02-2.0 PLN-02-2.5 PLN-02-3.0 PLN-02-4.0 PLN-04-1.5 PLN-04-2.0 PLN-04-2.5 PLN-04-3.0 PLN-04-4.0 PLN-04-6.0 PLN-06-2.0 PLN-06-3.0 PLN-06-4.0 PLN-08-2.0 PLN-08-3.0 PLN-08-4.0 PLN-08-6.0 PLN-12-3.0 PLN-12-4.0 PLN-16-3.0 PLN-16-4.0
Dimensions
Pipe Size PT,NPT
1/8
1/4
3/8
1/2
3/4 1
A 40 50 65 75 100 40 50 65 75 100 150 50 75 100 50 75 100 150 75 100 75 100
E
F
5.7
∅ 10.5
7.8
∅ 13.8
10.9
∅ 17.3
14.3
∅ 21.7
19.4
∅ 27.2
25.0
∅ 34.0
Note : Dimensions are reference only, subject to change without prior notice.
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UNION METAL INDUSTRIAL CO., LTD.
Pipe Fittings ∙
PME/PMT/PA/PRA
Male Elbow
Connects Female Pipe To Female Pipe
PME
A P
E
F
P
Male Tee
PMT
Part No.
PA
PME-02 PME-04 PME-06 PME-08
1/8 1/4 3/8 1/2
PRA
E
F
4.8 7.0 10.0 12.0
7/16 1/2 13/16 13/16
Connects Female Pipe To Female Pipe Part No.
Dimensions
Pipe Size PT,NPT
1/8 1/4 3/8 1/2
A 39.0 53.3 56.0 73.6
E 4.8 7.0 10.0 12.0
L 19.5 21.5 28.0 36.8
F 7/16 9/16 11/16 13/16
Connects Male Pipe To Female Pipe Part No.
Dimensions
Pipe Size PT,NPT
PA-02 PA-04 PA-06 PA-08 PA-12 PA-16
Reducing Adapter
A 19.5 23.4 28.0 36.8
PT,NPT
PMT-02 PMT-04 PMT-06 PMT-08
Adapter
Dimensions
Pipe Size
1/8 1/4 3/8 1/2 3/4 1
A 28 33 36 45 50 58
E
F
4.8 7.0 10.0 12.0 16.0 22.0
9/16 3/4 7/8 1-1/16 1-1/4 1-5/8
Connects Male Pipe To Female Pipe Part No.
Dimensions
Pipe Size
A
E
F
PRA-04-02
1/4
1/8
30
4.8
3/4
PRA-06-04
3/8
1/4
35
7.0
7/8
PRA-08-04
1/2
1/4
39
7.0
1-1/16
PRA-08-06
1/2
3/8
41
10.0
1-1/16
PRA-12-06
3/4
3/8
44
10.0
1-1/4
PRA-12-08
3/4
1/2
48
12.0
1-1/4
PRA-16-08
1
1/2
52
12.0
1-5/8
PRA-16-12
1
3/4
55
16.0
1-5/8
P-PT,NPT P1-PT,NPT
Note : Dimensions are reference only, subject to change without prior notice.
UNION METAL INDUSTRIAL CO., LTD.
7
Pipe Fittings ∙
PRB/PSE/PST/PBT
Reducing Bushing
PRB
Connects Female Pipe To Male Pipe Part No.
Pipe Size P-PT,NPT
PRB-04-02 PRB-06-04 PRB-08-04 PRB-08-06 PRB-12-04 PRB-12-06 PRB-12-08 PRB-16-08 PRB-16-12
Street Elbow
PSE
PST
Part No.
PBT
E
F
1/8 1/4 1/4 3/8 1/4 3/8 1/2 1/2 3/4
22 23 28 28 31 31 31 35 35
8.0 11.0 11.0 15.0 11.0 15.0 18.0 18.0 22.0
9/16 11/16 7/8 7/8 1-1/16 1-1/16 1-1/16 1-3/8 1-3/8
1/4 3/8 1/2 1/2 3/4 3/4 3/4 1 1
Dimensions
Pipe Size P-PT,NPT
A
L
E
F
1/8 1/4 3/8 1/2
26.4 29.7 32.0 39.6
26.4 29.7 36.1 39.6
4.8 7.0 10.0 12.0
1/2 11/16 13/16 1
Connects Male Pipe To Female Pipe Part No. PST-02 PST-04 PST-06 PST-08
Branch Tee
A
Connects Male Pipe To Female Pipe
PSE-02 PSE-04 PSE-06 PSE-08
Street Tee
Dimensions
P1-PT,NPT
Pipe Size
Dimensions
PT,NPT
A
L
S
E
F
1/8 1/4 3/8 1/2
48.5 59.4 68.1 79.2
26.4 29.7 36.1 39.6
22.1 29.7 32.0 39.6
4.8 7.0 10.0 12.0
1/2 11/16 13/16 1
Connects Male Pipe To Female Pipe Part No. PBT-02 PBT-04 PBT-06 PBT-08
Pipe Size PT,NPT
1/8 1/4 3/8 1/2
Dimensions A
L
S
E
F
52.8 59.4 72.1 79.2
26.4 29.7 36.1 39.6
22.1 29.7 32.0 39.6
4.8 7.0 10.0 12.0
1/2 11/16 13/16 1
Note : Dimensions are reference only, subject to change without prior notice.
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UNION METAL INDUSTRIAL CO., LTD.
Pipe Fittings ∙ Coupling
PC
PC/PRC/PFE/PFT Connects Male Pipe To Male Pipe Part No. PC-02 PC-04 PC-06 PC-08 PC-12 PC-16
Reducing Coupling
PRC
PFE
Part No.
PFT
Part No.
PBJ
A
E
F
21 30 30 40 42 51
8.0 11.0 15.0 18.0 22.0 25.0
9/16 3/4 7/8 1-1/16 1-1/4 1-5/8
Pipe Size P-PT,NPT
Dimensions
P1-PT,NPT
1/4 3/8 1/2 1/2 3/4 3/4 1 1
1/8 1/4 1/4 3/8 3/8 1/2 1/2 3/4
A
E
F
30 30 40 40 42 42 51 51
8.0 11.0 11.0 15.0 15.0 18.0 18.0 22.0
3/4 7/8 1-1/16 1-1/16 1-1/4 1-1/4 1-5/8 1-5/8
Dimensions
Pipe Size
A 26.4 29.7 36.0 39.6
PT,NPT
1/8 1/4 3/8 1/2
E 8.6 11.4 14.9 18.5
F 1/2 11/16 13/16 1
Connects Male Pipe To Male Pipe Part No. PFE-02 PFE-04 PFE-06 PFE-08
Union Ball Joints
1/8 1/4 3/8 1/2 3/4 1
Connects Male Pipe To Male Pipe
PFE-02 PFE-04 PFE-06 PFE-08
Female Tee
PT,NPT
Connects Male Pipe To Male Pipe
PRC-04-02 PRC-06-04 PRC-08-04 PRC-08-06 PRC-12-06 PRC-12-08 PRC-16-08 PRC-16-12
Female Elbow
Dimensions
Pipe Size
Dimensions
Pipe Size P-PT,NPT
1/8 1/4 3/8 1/2
A
L
E
F
52.8 59.4 72.1 79.2
26.4 29.7 36.1 39.6
8.6 11.4 15.0 18.5
1/2 11/16 13/16 1
Connects Male Pipe To Male Pipe Part No. PBJ-02 PBJ-04 PBJ-06 PBJ-08 PBJ-12 PBJ-16
Dimensions
Pipe Size P-PT,NPT
A
E
F
F1
1/8 1/4 3/8 1/2 3/4 1
46.0 59.4 63.5 68.3 79.2 90.4
6.8 9.1 13.2 15.7 22.4 26.2
1-1/8 1-3/8 1-1/2 1-3/4 2-1/8 2-1/2
15/16 1-3/16 1-5/16 1-5/8 1-7/8 2-3/8
Note : Dimensions are reference only, subject to change without prior notice.
UNION METAL INDUSTRIAL CO., LTD.
9
Pipe Fittings ∙
PBJ/PCW/PRCW/PCP/PPG
Coupling S.W Type
PCW
Connects Both Welded Systems Part No. PCW-08 PCW-12 PCW-16
Reducing Coupling S.W Type
PRCW
Pipe Size Nom Size
P-SW
A
E
F
1/2 3/4 1
22.2 27.7 34.5
29.5 35.5 38.7
14.0 19.0 25.0
∅ 32 ∅ 38 ∅ 46
Connects Both Welded Systems Part No.
PSC
P-SW P1-SW
Nom Size
PCP
Part No.
PPG
E
32.5 14.0 35.7 14.0 38.7 19.0
Part No.
P-PT,NPT P1-SW
1/2 3/4 1
1/2 3/4 1
22.2 27.7 34.5
E
F
40 43 50
14.0 19.0 25.0
∅ 38 ∅ 46 ∅ 46
Pipe Size
Dimensions
PT,NPT
A
F
1/8 1/4 3/8 1/2 3/4 1
19 23 23 34 34 41
9/16 3/4 7/8 1-1/16 1-1/4 1-5/8
Part No.
Pipe Size
Dimensions
PT,NPT
A
F
1/8 1/4 3/8 1/2 3/4 1
19 24 25 31 31 38
7/16 9/16 11/16 7/8 1-1/16 1-3/8
Note : Dimensions are reference only, subject to change without prior notice.
UNION METAL INDUSTRIAL CO., LTD.
∅ 38 ∅ 46 ∅ 46
A
Connects Female Pipe
PPG-02 PPG-04 PPG-06 PPG-08 PPG-12 PPG-16
10
F
Dimensions
Pipe Size Nom Size
Connects Male Pipe
PCP-02 PCP-04 PCP-06 PCP-08 PCP-12 PCP-16
Pipe Plug
22.2 22.2 27.7
A
Connects Male Pipe to Welded Systems
PSC-08-08W PSC-12-12W PSC-16-16W
Pipe Cap
Dimensions
Pipe Size
PRCW-12-08 3/4 x 1/2 27.7 PRCW-16-08 1 x 1/2 34.5 PRCW-16-12 1 x 3/4 34.5
Special Coupling
Dimensions
Tube Fittings
Tube Fitting - Large Size
Needle Valves
Ball Valves
Hex Ball Valves
Check Valves
Manifolds Valves
Uni-primet Weld/ Face Seal Fittings
Head Office and Factory 133 Block-1Lot, Namdong Industrial Complex. 704, Gojan-Dong, Namdong-Gu, Incheon, KOREA. TEL:+82-32-821-6601 FAX:+82-32-821-6604 http://www.unilok.com E-mail:
[email protected]
Master Distributor Kor-Lok USA, LLC 15060 West Drive, Suite 100 Houston, TX 77053, USA TEL:+1-281-437-8400 FAX:+1-281-437-8437 http://www.korlokusa.com E-mail:
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