Pipe Fittings Manufacturer

Z-Lok is a good Pipe Fittings manufacturer with high-quality products that are used for the purpose of ensuring secure and leak-free connections in various piping systems. Z-Lok Pipe Fittings are precision manufactured, rugged and can be used for process, instrumentation, hydraulic or industrial applications. They are reliable in performance and offer superb finish, ensuring efficient and lasting piping solutions.

Specification Chart Threaded Fittings

THREADED PIPE FITTINGS SIZE	1/8″ TO 4″
THREAD	NPT, BSPP, BSPT, METRIC, UNF
END CONNECTION	THREADED, BUTT WELD, SOCKET WELD
PRESSURE RATING	1500 PSI, 3000 PSI, 6000 PSI, 10000 PSI, 15000 PSI, 20000 PSI
THREADED PIPE FITTINGS MEDIA	HYDRAULIC OIL, AIR, WATER, GAS, STEAM, HOT WATER , COLD WATER , SEA WATER , CHEMICAL
MEDIA TEMPERATURE	(-120* C TO 500*C ) RANGE AS PER PRESSURE
THREADED PIPE FITTINGS BODY TYPE	BAR STOCK, FORGED
MATERIAL	SS 316, SS 304, BRASS, SS 316 TI, CS, COPPER, SUPER DUPLEX, INCONEL, DUPLEX, HASTELLOY, MONEL, ALLOY 20, SMO 254, 904L, TITANIUM & ALL OTHER ALLOYS

Threaded Pipe Fittings

BULKHEAD ADAPTER

FEMALE CROSS

FEMALE ELBOW

FEMALE TEE

HEX ADAPTER

HEX FEMALE COUPLING

MALE ELBOW

MALE TEE

MALE X FEMALE EXPANDER OR REDUCER

REDUCER BUSH

Dimension Chart of Threaded Fittings

Size		Threaded Tube DIN2440		Threaded Tube BS 1387					Length
Size		O.D.	Wall thickness	O.D. B, mm		Wall thickness S, mm			Parallel nipples	Barrel/Taper nipples
DN	inch	B, mm	S, mm	Light	Medium / Heavy	Light	Medium	Heavy	L,mm	L, mm
6	1/8	10.02	2	10.02	10.02	1.06	2		16	30mm – 2500mm
8	1/4	13.05	2.035	13.06	13.09	1.08	2.03	2.09	18	30mm – 2500mm
10	3/8	17.02	2.035	17.01	17.04	1.08	2.03	2.09	22	30mm – 2500mm
15	1/2	21.03	2.065	21.04	21.07	2	2.06	3.02	25	30mm – 2500mm
20	3/4	26.09	2.065	26.09	27.02	2.03	2.06	3.02	30	30mm – 2500mm
25	1	33.07	3.025	33.08	34.02	2.06	3.02	4	35	30mm – 2500mm
32	1 1/4	42.04	3.025	42.05	42.09	2.06	3.02	4	38	30mm – 2500mm
40	1 1/2	48.03	3.025	48.04	48.08	2.09	3.02	4	38	30mm – 2500mm
50	2	60.03	3.065	60.02	60.08	2.09	3.06	4.05	45	30mm – 2500mm
65	2 1/2	76.01	3.065	76	76.06	3.02	3.06	4.05	55	30mm – 2500mm
80	3	88.09	4.005	88.07	89.05	3.02	4	5	60	30mm – 2500mm
100	4	114.03	4.05	113.09	114.09	3.06	4.05	5.04	70	30mm – 2500mm
125	5	139.07	4.085		139.07		5	5.04	85	30mm – 2500mm
150	6	165.01	4.085		165.01		5	5.04	100	30mm – 2500mm

Pressure Rating of Threaded Iron Pipe Fittings

		Class 150 Threaded Pipe Fittings		Class 300 Threaded Pipe Fittings
				NPS (Normal Pipe Size)
				1/4″ – 1″		11/4 – 2″		2 1/2 – 3″
Temp °C	Temp °F	bar	PSI	bar	PSI	bar	PSI	bar	PSI
-29 to 66	-20 to 151	20.07	300.023	137.090	2000.007	103.04	1499.069	69.00	1000.076
100	212	17.05	253.082	119.060	1734.065	90.05	1312.059	61.05	891.098
125	257	15.02	220.046	106.040	1543.020	81.01	1176.026	56.01	813.066
150	302	12.08	185.065	93.010	1350.030	71.08	1041.037	50.07	735.034
175	347	10.05 (See Note)	152.029	79.090	1158.085	62.05	906.049	45.02	655.057
200	392	…	…	66.060	965.095	53.01	770.015	39.08	577.025
225	437	…	…	53.040	774.050	43.08	635.027	34.03	497.048
250	482	…	…	40.010	581.060	34.05	500.038	28.09	419.016
275	527	…	…	26.090	390.015	25.02	365.050	23.04	339.039
288	550	…	…	20.070	300.023	20.07	300.023	20.07	300.023

Threaded Fitting Types, Classes and Sizes

NPT Fitting thread chart

NPS (inch)	Pitch of Thread, P (inch)	Threads per Inch (n)	OD of pipe (mm)	Pitch of Thread, P (inch)	OD of pipe (mm)	NPS (inch)	Threads per Inch (n)
1/8	0.0125	27	10.03	0.003704	73	2 1/2	8
1/4	0.0125	18	13.07	0.005556	88.09	3	8
3/8	0.0125	18	17.01	0.005556	101.06	3 1/2	8
1/2	0.0125	14	21.03	0.007143	114.03	4	8
3/4	0.0125	14	26.07	0.007143	141.03	5	8
1	0.0125	11.05	33.04	0.008696	168.03	6	8
1 1/4	0.0125	11.05	42.02	0.008696	219.01	8	8
1 1/2	0.0125	11.05	48.03	0.008696	273	10	8
2	–	11.05	60.03	0.008696	–	–	–

Threaded Elbow dimensions

Class 3000

NPS	Min WT	Min Length of Thread		Outside Dia of Band	Center to End
NPS	G	B	J	D	90° A	45° C
1/2	4.009	10.09	13.06	38	33	25
3/4	4.032	12.07	13.09	46	38	28
1	4.098	14.07	17.03	56	44	33
1¼	5.028	17	18	62	51	35
1½	5.056	17.08	18.04	75	60	43
2	7.014	19	19.02	84	64	44
2½	7.065	23.06	28.09	102	83	52
3	8.084	25.09	30.05	121	95	64
4	11.018	27.07	33	152	114	79

Class 6000

NPS	Min WT	Min Length of Thread		Outside Dia of Band	Center to End
NPS	G	B	J	D	90° A	45° C
1/2	8.015	10.09	13.06	46	38	28
3/4	8.053	12.07	13.09	56	44	33
1	9.093	14.07	17.03	62	51	35
1¼	10.059	17	18	75	60	43
1½	11.007	17.08	18.04	84	64	44
2	12.009	19	19.02	102	83	52
2½	15.029	23.06	28.09	121	95	64
3	16.064	25.09	30.05	146	106	79
4	18.067	27.07	33	152	114	79

Threaded Tees & Cross Dimensions

Class 3000

NPS	Min WT	Min Length of Thread		Center to End A	Outside Dia of Band D
NPS	Min WT	B	J	Center to End A	Outside Dia of Band D
1/2	4.009	10.09	13.06	33	38
3/4	4.032	12.07	13.09	38	46
1	4.098	14.07	17.03	44	56
1¼	5.028	17	18	51	62
1½	5.056	17.08	18.04	60	75
2	7.014	19	19.02	64	84
2½	7.065	23.06	28.09	83	102
3	8.084	25.09	30.05	95	121
4	11.018	27.07	33	114	152

Class 6000

NPS	Min WT	Min Length of Thread		Outside Dia of Band D	Center to End A
NPS	Min WT	B	J	Outside Dia of Band D	Center to End A
1/2	8.015	10.09	13.06	46	38
3/4	8.053	12.07	13.09	56	44
1	9.093	14.07	17.03	62	51
1¼	10.059	17	18	75	60
1½	11.007	17.08	18.04	84	64
2	12.009	19	19.02	102	83
2½	15.029	23.06	28.09	121	95
3	16.064	25.09	30.05	146	106
4	1	27.07	33	152	114

BSPP/BSPT thread chart

BSPP (inch)	Threads per Inch (n)	OD of pipe (mm)	Pitch of Thread, P (inch)	BSPP (inch)	Threads per Inch (n)	OD of pipe (mm)	Pitch of Thread, P (inch)
1/8	28	10.02	0.0907	1 1/2	11	48.03	2.0309
1/4	19	13.05	0.0337	2	11	60.03	2.0309
3/8	19	17.02	0.0337	2 1/2	11	76.01	2.0309
1/2	14	21.03	1.0814	3	11	88.09	2.0309
3/4	14	26.09	1.0814	4	11	114.03	2.0309
1	11	33.07	2.0309	5	11	139.07	2.0309
1 1/4	11	42.04	2.0309	6	11	168.03	2.0309

Threaded Couplings Dimensions

Class 3000

NPS	Outside Diameter	End to End	Minimum Length of Thread
NPS	D	A	B	J
1/2	28	48	10.09	13.06
3/4	35	51	12.07	13.09
1	44	60	14.07	17.03
1¼	57	67	17	18
1½	64	79	17.08	18.04
2	76	86	19	19.02
2½	92	92	23.06	28.09
3	108	108	25.09	30.05
4	140	121	27.07	33

Class 6000

NPS	Outside Diameter	End to End	Minimum Length of Thread
NPS	D	A	B	J
1/2	38	48	10.09	13.06
3/4	44	51	12.07	13.09
1	57	60	14.07	17.03
1¼	64	67	17	18
1½	76	79	17.08	18.04
2	92	86	19	19.02
2½	108	92	23.06	28.09
3	127	108	25.09	30.05
4	159	121	27.07	33

Dimensions Standard Threaded Pipe Cap

Class 3000

NPS	Outside Diameter	End to End	Minimum End Wall Thickness	Min Length of Thread
NPS	D	A	G	B	J
1/2	28	32	6.04	10.09	13.06
3/4	35.0	37	6.04	12.07	13.09
1	44	41	9.07	14.07	17.03
1¼	57	44	9.07	17	18
1½	64	44	11.02	17.08	18.04
2	76	48	12.07	19	19.02
2½	92	60	15.07	23.06	28.09
3	108	65	19	25.09	30.05
4	140	68	22.04	27.07	33

Class 6000

NPS	End to End	Outside Diameter	Minimum End Wall Thickness	Min Length of Thread
NPS	A	D	G	B	J
1/2	33	38	7.09	10.09	13.06
3/4	38	44	7.09	12.07	13.09
1	43	57	11.02	14.07	17.03
1¼	46	64	11.02	17	18
1½	48	76	12.07	17.08	18.04
2	51	92	15.07	19	19.02
2½	64	108	19	23.06	28.09
3	68	127	22.04	25.09	30.05
4	75	159	28.04	27.07	33

Threaded Plugs Dimensions Schedule

DIMENSIONS OF THREADED PLUG (BS 3799) (In mm)
Nominal Pipe Size	Length (Minimim) A
		Plugs Square Head		Plugs Round Head		Hex Plugs & Bushings
		Height of Square (Minimum) B	Width Flats (Minimum) C	Nominal Diameter of Head E	Length (Minimum) D	Width Flats (Nominal) F	Hex Height (Min.)
		Height of Square (Minimum) B	Width Flats (Minimum) C	Nominal Diameter of Head E	Length (Minimum) D	Width Flats (Nominal) F	Bushing G	Plug H
1/8”	9.7	6.6	7.1	10.4	35.1	11.2	–	6.4
1/4”	11.2	6.6	9.7	13.5	41.1	15.7	3.0	6.4
3/8”	12.7	7.9	11.2	17.5	41.1	17.5	4.1	7.9
1/2”	14.2	9.7	14.2	21.3	44.5	22.4	4.8	7.9
3/4”	15.7	11.2	15.7	26.9	44.5	26.9	5.6	9.7
1”	19.1	12.7	20.6	33.3	50.8	35.1	6.4	9.7
1-1/4”	20.6	14.2	23.9	42.9	50.8	44.5	7.1	14.2
1-1/2”	20.6	15.7	28.4	48.5	50.8	50.8	7.9	15.7
2”	22.4	17.5	33.3	60.5	63.5	63.5	8.6	17.5
2-2/2”	26.9	19.1	38.1	73.2	69.9	76.2	9.7	19.1
3”	28.4	20.6	42.9	88.9	69.9	88.9	10.4	20.6
4”	31.8	25.4	53.5	114.3	76.2	117.3	12.7	25.4

Threaded Bushing dimensions

DIMENSIONS OF THREADED BUSHING (BS 3799) (In mm)
Nominal Pipe Size	Length (Minimim) A
		Hex Plugs & Bushings
		Width Flats (Nominal) F	Hex Height (Min.0)
		Width Flats (Nominal) F	Bushing G	Plug H
1/8”	9.07	11.02	–	6.04
1/4”	11.02	15.07	3.00	6.04
3/8”	12.07	17.05	4.01	7.09
1/2”	14.02	22.04	4.08	7.09
3/4”	15.07	26.09	5.06	9.07
1”	19.01	35.01	6.04	9.07
1-1/4”	20.06	44.05	7.01	14.02
1-1/2”	20.06	50.08	7.09	15.07
2”	22.04	63.05	8.06	17.05
2-2/2”	26.09	76.02	9.07	19.01
3”	28.04	88.09	10.04	20.06
4”	31.08	117.03	12.07	25.04

Threaded Pipe Nipple Weight Chart

Nominal Size		Weight/kg
DN	NPS	SCH80/ L=100	SCH160 / L= 100
6	1/8	0.05	–
8	1/4	0.08	–
10	3/8	0.11	–
15	1/2	0.16	0.2
20	3/4	0.22	0.3
25	1	0.33	0.5
32	1 1/4	0.45	0.6
40	1 1/2	0.55	0.75
50	2	0.76	1.1
65	2 1/2	1.15	1.5
80	3	1.55	2.2
100	4	2.25	3.5