Bolt Type Medium Pressure Test Plugs

Justram BTT bolt-type test plugs use a compression seal for medium pressure pipe and tube testing, with a bypass connection selected by model.

Listed bore ranges span 3/8–10 in.; each part covers a specific interval.
Allowable pressure decreases with size. Use the individual table rating.
Optional gauge, ball valve and cap configurations require confirmation.

Product illustrations

Justram medium-pressure bolt-type test plug — Justram Medium Pressure BTT Plug

Justram BTT-series medium-pressure test plug — Justram Medium Pressure BTT Plug

Justram BTT medium pressure test plugs provide an expandable seal at an open pipe or tube end. Tightening the compression assembly expands the seal against the measured bore. The model-specific bypass connection allows the required test fittings to be selected with the plug.

Choose the part by actual bore and pressure

Use the minimum and maximum diameter columns below, together with the pressure rating for that exact item. The listed family spans 3/8–10 in. bore sizes, with gaps between some larger-size ranges. Nominal pipe and schedule entries are a guide; confirm the actual bore before ordering.

The smaller listed parts are rated up to 300 psi, while larger parts have lower ratings. Do not apply the family maximum to every plug. The quotation should confirm the selected part, size range, pressure and suitability for the test medium, temperature and pipe condition.

BTT Plug Size Chart 146 Series.xlsx

Item Number	Nominal Pipe	Dia. Min	Dia. Max	By-Pass MNPT	Pressure Rating	Pipeline Max Head
BTT-146-90040		0.375" (9.52mm)	0.406" (10.31mm)	1/8" MNPT	300 psi (20.68 bar)	693 ft (211.22 m)
BTT-146-90044	3/8" Sch 40	0.406" (10.31mm)	0.44" (11.17mm)	1/8" MNPT	300 psi (20.68 bar)	693 ft (211.22 m)
BTT-146-90051	3/8" Sch 40 1/2" Sch 160	0.44" (11.17mm)	0.51" (12.95mm)	1/8" MNPT	300 psi (20.68 bar)	693 ft (211.22 m)
BTT-146-90056	1/2" Sch 80	0.51" (12.95mm)	0.562" (14.27mm)	1/8" MNPT	300 psi (20.68 bar)	693 ft (211.22 m)
BTT-146-90063	1/2" Sch 40 3/4" Sch 160	0.562" (14.27mm)	0.625" (15.87mm)	1/8" MNPT	300 psi (20.68 bar)	693 ft (211.22 m)
BTT-146-90069		0.625" (15.87mm)	0.69" (17.52mm)	1/4" MNPT	250 psi (17.23 bar)	577 ft (175.86 m)
BTT-146-90075	3/4" Sch 80	0.69" (17.52mm)	0.76" (19.3mm)	1/4" MNPT	250 psi (17.23 bar)	577 ft (175.86 m)
BTT-146-90083	3/4" Sch 40	0.76" (19.3mm)	0.83" (21.08mm)	1/4" MNPT	250 psi (17.23 bar)	577 ft (175.86 m)
BTT-146-90088		0.83" (21.08mm)	0.89" (22.6mm)	1/4" MNPT	250 psi (17.23 bar)	577 ft (175.86 m)
BTT-146-90100	1" Sch 80	0.89" (22.6mm)	1.01" (26mm)	1/4" MNPT	250 psi (17.23 bar)	577 ft (175.86 m)
BTT-146-90113	1" Sch 40	1.01" (26mm)	1.13" (29mm)	1/4" MNPT	250 psi (17.23 bar)	577 FT (175.86 m)
BTT-146-90125	1-1/4" Sch 160	1.13" (29mm)	1.26" (32mm)	1/4" MNPT	200 psi (13.78 bar)	462 ft (140.81 m)
BTT-146-90138	1-1/4" Sch 40, Sch 80 1-1/2" Sch 160	1.26" (32mm)	1.39" (35mm)	1/4" MNPT	200 psi (13.78 bar)	462 ft (140.81 m)
BTT-146-90150	1-1/2" Sch 80	1.39" (35mm)	1.51" (38mm)	1/4" MNPT	200 psi (13.78 bar)	462 ft (140.81 m)
BTT-146-90163	1-1/2" Sch 40	1.51" (38mm)	1.63" (41mm)	3/8" MNPT	150 psi (10.34 bar)	347 ft (105.76 m)
BTT-146-90175	2" Sch 160	1.63" (41mm)	1.76" (45mm)	3/8" MNPT	150 psi (10.34 bar)	347 ft (105.76 m)
BTT-146-90188		1.76" (45mm)	1.88" (48mm)	3/8" MNPT	150 psi (10.34 bar)	347 ft (105.76 m)
BTT-146-90200	2" Sch 80	1.88" (48mm)	2.01" (51mm)	3/8" MNPT	150 psi (10.34 bar)	347 ft (105.76 m)
BTT-146-90218	2" Sch 40 2-1/2" Sch 160	2.01" (51mm)	2.18" (55mm)	3/8" MNPT	100 psi (6.89 bar)	231 ft (70.41 m)
BTT-146-90231		2.18" (55mm)	2.31" (59mm)	3/8" MNPT	100 psi (6.89 bar)	231 ft (70.41 m)
BTT-146-90250	2-1/2" Sch 40, Sch 80	2.31" (59mm)	2.51" (64mm)	3/8" MNPT	100 psi (6.89 bar)	231 ft (70.41 m)
BTT-146-90269	3" Sch 160	2.51" (64mm)	2.69" (68mm)	3/8" MNPT	100 psi (6.89 bar)	231 ft (70.41 m)
BTT-146-90288		2.69" (68mm)	2.88" (73mm)	3/8" MNPT	100 psi (6.89 bar)	231 ft (70.41 m)
BTT-146-90307	3" Sch 40, Sch 80	2.88" (73mm)	3.07" (78mm)	3/8" MNPT	100 psi (6.89 bar)	231 ft (70.41 m)
BTT-146-90326		3.07" (78mm)	3.26" (83mm)	3/8" MNPT	80 psi (5.51 bar)	185 ft (56.38 m)
BTT-146-90351	3-1/2" Sch 80 4" Sch 160	3.26" (83mm)	3.51" (89mm)	3/8" MNPT	80 psi (5.51 bar)	185 ft (56.38 m)
BTT-146-90376	3-1/2" Sch 40	3.51" (89mm)	3.76" (96mm)	3/8" MNPT	80 psi (5.51 bar)	185 ft (56.38 m)
BTT-146-90406	4" Sch 40, Sch 80	3.76" (96mm)	4.06" (103mm)	3/8" MNPT	80 psi (5.51 bar)	185 ft (56.38 m)
BTT-146-90450		4.45" (113mm)	4.5" (114mm)	3/8" MNPT	40 psi (2.75 bar)	92 ft (28.04 m)
BTT-146-90500		4.95" (126mm)	5" (127mm)	1/2" MNPT	25 psi (1.72 bar)	58 ft (17.67 m)
BTT-146-90550		5.34" (136mm)	5.5" (140mm)	1/2" MNPT	25 psi (1.72 bar)	58 ft (17.67 m)
BTT-146-90600		5.95" (151mm)	6" (152mm)	1/2" MNPT	25 psi (1.72 bar)	58 ft (17.67 m)
BTT-146-90800		7.95" (202mm)	8" (203mm)	3/4" MNPT	15 psi (1.03 bar)	34 ft (10.36 m)
BTT-146-91000		9.95" (253mm)	10" (254mm)	3/4" NPT	10 psi (0.68 bar)	23 ft (7.01 m)

Bolt Type Medium Pressure Hydro Test Plug Size Chart 146 Series.xlsx

Seals, connections and accessories

The listed construction is plated carbon steel with nitrile seals; configurations below 0.375 in., where supplied, use neoprene. Confirm seal compatibility with the fluid and temperature for the actual application. Special requirements need review of a specific configuration.

Pressure gauges, ball valves and caps shown in the illustrations are optional arrangements. Specify the required port size and connection when requesting these accessories. Follow the supplied operating instructions and inspect the seal and mechanical components before use.

Application details for a quotation

Provide the measured pipe or tube ID, or OD and wall thickness, along with material, maximum test pressure, temperature, medium, access and quantity. For lower-pressure applications, compare the economy test plug range; for other requirements, review the test plug catalogue.

Request a BTT test plug quotation.