Type C Inflatable Pipe Stoppers & FME Bladders
Justram Type C inflatable pipe stoppers provide foreign material exclusion (FME) and temporary pipe-end protection for suitable applications.
- Diameter range capability: 1" to 108"
- Seven bladder and cover constructions
- Optional gauges, valves and hose accessories
Contact Justram to confirm the size and construction for your application and request a quotation. Accessories shown are optional.
Inflatable stoppers for pipe-end protection and FME
Justram manufactures Type C inflatable pipe stoppers for suitable foreign material exclusion (FME) and temporary pipe-end protection applications. The flexible bladder and protective fabric cover allow positioning through an appropriate access opening before inflation.
- Range capability: 1″ to 108″ diameter. Selected reference sizes are listed below; contact Justram for other sizes and construction options.
- Construction options: rubber, nitrile and membrane constructions with canvas, flame-retardant fabric and other cover options.
- Accessories: optional pressure gauges, ball valves and protective hose sleeves.
Contact Justram to confirm suitability and obtain the operating instructions for your supplied stopper.
Type C bladder materials and cover options
Our most popular construction: GP-DLCMB
This newer design combines an RF-bonded polyurethane bladder with a dual-layer canvas cover for reliable service. Contact Justram to confirm suitability for your application.
Compare the seven Type C bladder and cover constructions below. Each prefix identifies the construction before the size in the ordering reference.
Chemical suitability depends on the specific medium, concentration, temperature and exposure duration. Cover properties do not establish the pressure or temperature rating of the complete stopper. Contact Justram to confirm material compatibility and the supplied construction.
Ordering: provide the required diameter or an existing part number, name the construction of interest, and describe the application. Justram will confirm the construction, dimensions and ordering reference in your quotation. Construction availability varies by size; please confirm with Justram.
Perma Type PTBUNAC bladder replacements
Justram GP-NIT-XX Type C bladders are functionally and constructionally equivalent replacements for Perma Type Rubber PTBUNAC-XX bladders of the corresponding size.
Series cross-reference: Perma Type PTBUNAC-XX → Justram GP-NIT-XX.
The Justram GP-NIT construction uses a nitrile internal bladder with a single-layer canvas cover. “XX” denotes size; these are series patterns, not complete ordering codes.
Send Justram your existing Perma Type part number, required size and application details. Contact Justram to confirm your required size and ordering code, including material compatibility and operating requirements. The dimensions on this page are Justram reference dimensions.
Type C sizes and reference dimensions
Justram’s Type C range covers diameters from 1″ to 108″. The table below lists selected reference sizes from 2″ to 60″. Contact Justram for other sizes and constructions.
Preparing your enquiry: Identify the required diameter below, then review the construction options and prefixes. Send Justram the diameter, preferred construction prefix, quantity and application details. We will confirm suitability and the complete ordering reference.
Reference dimensions: The access-opening figures apply specifically to the GP rubber bladder with a single-layer canvas cover. Listed lengths and tubing dimensions are existing model references; Justram will confirm dimensions for your selected construction in the quotation.
On a small screen: scroll across the table to see the remaining columns.
| Maximum diameter (in.) | Reference inflated length (in.) | Tubing inside diameter (in.) | Required access opening — GP rubber / single-layer canvas |
|---|---|---|---|
| 2 | 4 | 0.25 | 1″ |
| 3 | 5 | 0.25 | 1″ |
| 4 | 6 | 0.25 | 1.25″ |
| 5 | 7 | 0.25 | 1.25″ |
| 6 | 8 | 0.375 | 1.5″ |
| 8 | 9 | 0.375 | 2″ |
| 10 | 11 | 0.375 | 2″ |
| 12 | 14 | 0.375 | 2.5″ |
| 14 | 16 | 0.625 | 2.5″ |
| 15 | 17 | 0.625 | 2.5″ |
| 16 | 18 | 0.625 | 3″ |
| 18 | 19 | 0.625 | 3″ |
| 20 | 23 | 0.625 | 4″ |
| 21 | 24 | 0.625 | 4″ |
| 22 | 25 | 0.625 | 4″ |
| 24 | 27 | 0.625 | 4″ |
| 26 | 31 | 0.625 | 5″ |
| 28 | 32 | 0.625 | 5″ |
| 30 | 34 | 0.625 | 5″ |
| 32 | 36 | 0.625 | 5″ |
| 34 | 38 | 0.625 | 5″ |
| 36 | 42 | 0.625 | 5″ |
| 40 | 49 | 0.625 | 6″ |
| 42 | 53 | 0.625 | 6″ |
| 44 | 54 | 0.625 | 6″ |
| 48 | 56 | 0.625 | 6″ |
| 54 | 66 | 0.625 | |
| 60 | 70 | 0.625 |
Contact Justram for the operating instructions and inflation limit applicable to the supplied model.
Optional gauges, valves and hose accessories
Photographs show examples of accessory arrangements. The gauge, ball valve, fittings and protective hose sleeve shown are optional; confirm the components included in your quotation.
- Pressure gauge: discuss the appropriate gauge for the supplied stopper.
- Ball valve and inflation fittings: confirm the arrangement required for your application.
- Hose options: ask about additional hose length and protective sleeving.
- Retrieval arrangements: discuss access and retrieval requirements before ordering.
Optional hose heat sleeve
The optional protective hose sleeve has a continuous operating temperature of 500°F / 260°C. Its stated maximum short-term exposure is 3000°F / approximately 1650°C; the permitted duration and installation conditions require confirmation for the supplied sleeve.
The sleeve provides molten-splash, flame and abrasion resistance. These figures apply to the sleeve material, not to the bladder or complete hose assembly.
Large openings and custom configurations
Contact Justram about large openings and custom shapes, including square or rectangular ducts. Send the opening dimensions and application requirements for review; the photos illustrate the range and do not establish a size or rating for an unlabelled assembly.
For enquiries involving Perma Type PTORNRC or PTORNRB bladders, provide the original dimensions, materials and operating conditions. Justram can assess the request; dimensional or pressure interchangeability should not be assumed.
Questions about Type C stoppers
Are the gauge and valve included?
They are optional accessories. Your quotation should identify the stopper, hose and accessory arrangement being supplied.
Which bladder material or cover should I order?
Contact Justram with the application details. Our team will review the required construction with you.
Can I order for a non-round opening?
Custom configurations can be reviewed. Send the dimensions and access details to Justram before ordering.
Request a Type C stopper quotation
Call 1-800-668-9875 or contact our team below. Include a part number if known, opening dimensions, quantity and the intended application. Product recommendations are handled directly by Justram.
Other constructions: high-expansion light-duty plugs | heavy-duty inflatable bladders | all inflatable bladders.
