Pipe Plug, Multi-Flex®, Oil Resist, ByPass 115 Series
For most size, pressure, chemical, and temperature requirements
Ballistic Nylon Reinforced Nitrile Outer Ply for Hydrocarbon Resistance - many other materials available
- High expansion applications
- Hydrocarbon Resistant
- Ballistic Nylon Reinforced Nitrile
- Puncture and tear Resistant
- Synthetic materials mean many more years of shelf life than molded Rubber plugs
- Other materials available for chemical and temperature requirements
- Small deflated diameter and flexibility navigates small openings
- Connect in series for double block and bleed
- Conforms to most pipe shapes
- Very small storage area

| Image | Dia. Max | Dia. Deflated | By-Pass | Pipe Plug Inflation Max Press. | Pipeline Pressure Max Head | Port, Inflation | Length Deflated | Shipping Wt. | Item Number | Price | Qty | Action |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
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72" (1829mm) | 10" (254mm) | 3/4 F | 4 psi (0.28 bar) | 2 psi (0.14 bar)/4.6' (1.41 m) | 3/8" F - 1/2" QD Plug | 191" (4851mm) | 130 Lb (58.97 Kg) | 115-072- |
$9,300.00
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66" (1676mm) | 10" (254mm) | 3/4 F | 4 psi (0.28 bar) | 2 psi (0.14 bar)/4.6' (1.41 m) | 3/8" F - 1/2" QD Plug | 176" (4470mm) | 106 Lbs (48.08 Kg) | 115-066- |
$8,500.00
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60" (1524mm) | 10" (254mm) | 3/4 F | 4.5 psi (0.31 bar) | 2.25 psi (0.16 bar)/5.19' (1.58 m) | 3/8" F - 1/2" QD Plug | 160" (4064mm) | 91 Lb (32.2 Kg) | 115-060- |
$8,000.00
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54" (1372mm) | 9" (229mm) | 3/4 F | 5 psi (0.34 bar) | 2.5 psi (0.17 bar)/5.8' (1.76 m) | 3/8" F - 1/2" QD Plug | 145" (3683mm) | 81 Lb (36.74 Kg) | 115-054- |
$6,800.00
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48" (1219mm) | 9" (229mm) | 3/4 F | 6.5 psi (0.45 bar) | 3.25 psi (0.22 bar)/7.5' (2.28 m) | 3/8" F - 1/2" QD Plug | 129" (3277mm) | 49 Lb (22.23 Kg) | 115-048- |
$4,090.00
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42" (1067mm) | 8" (203mm) | 3/4 F | 9 psi (0.62 bar) | 4.5 psi (031 bar)/10.4 (3.16 m) | 3/8" F - 1/2" QD Plug | 114" (2896mm) | 58 Lb (26.31 Kg) | 115-042- |
$3,570.00
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36" (914mm) | 7" (178mm) | 3/4 F | 9 psi (0.62 bar) | 4.5 psi (031 bar)/10.4 (3.16 m) | 3/8" F - 1/2" QD Plug | 97" (2464mm) | 50 Lb (22.68 Kg) | 115-036- |
$2,980.00
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33" (838mm) | 7" (178mm) | 3/4 F | 9 psi (0.62 bar) | 4.5 psi (031 bar)/10.4 (3.16 m) | 3/8" F - 1/2" QD Plug | 90" (2286mm) | 47 Lb (21.32 Kg) | 115-033- |
$2,470.00
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30" (762mm) | 6" (152mm) | 3/4 F | 9 psi (0.62 bar) | 4.5 psi (031 bar)/10.4 (3.16 m) | 3/8" F - 1/2" QD Plug | 82" (2083mm) | 42 Lb (19.05 Kg) | 115-030- |
$2,100.00
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28" (711mm) | 6" (152mm) | 3/4" F | 9 psi (0.62 bar) | 4.5 psi (0.31 bar)/10.4' (3.16 m) | 3/8" F - 1/2" QD Plug | 76" (1930mm) | 36 Lb (16.33 Kg) | 115-028- |
$1,810.00
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24" (610mm) | 6" (152mm) | 3/4 F | 10 psi (0.69 bar) | 5 psi (0.34 bar)/11.5' (3.52 m) | 3/8" F - 1/2" QD Plug | 66" (1676mm) | 34 Lb (15.42 Kg) | 115-024- |
$1,340.00
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20" (508mm) | 6" (152mm) | 3/4 F | 20 psi (1.38 bar) | 10 psi (0.69 bar)/23.1' (7.03 m) | 3/8" F - 1/2" QD Plug | 56" (1422mm) | 31 Lbs (14.06 Kg) | 115-020- |
$1,210.00
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18" (457mm) | 6" (152mm) | 3/4 F | 22 psi (1.52 bar) | 11 psi (0.76 bar)/25.4' (7.73 m) | 3/8" F - 1/2" QD Plug | 51" (1295mm) | 28 Lb (12.70 Kg) | 115-018- |
$1,100.00
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16" (406mm) | 5.5" (140mm) | 3/4 F | 25 psi (1.72 bar) | 12.5 psi (0.86 bar)/28.8' (8.79 m) | 3/8" F - 1/2" QD Plug | 46" (1168mm) | 26 Lb (11.79 Kg) | 115-016- |
$910.00
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15" (381mm) | 5.5" (140mm) | 3/4 F | 25 psi (1.72 bar) | 12.5 psi (0.86 bar)/28.8' (8.79 m) | 3/8" F - 1/2" QD Plug | 44" (1118mm) | 24 Lb (10.89 Kg) | 115-015- |
$853.00
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12" (305mm) | 4.5" (114mm) | 3/8 F | 25 psi (1.72 bar) | 12.5 psi (0.86 bar)/28.8' (8.79 m) | 3/8" F - 1/4" QD Plug | 40" (1016mm) | 17 Lb (7.71 Kg) | 115-012- |
$756.00
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10" (254mm) | 3.5" (89mm) | 1/8 F | 30 psi (2.07 bar) | 15 psi (1.03 bar)/34.6' (10.55 m) | 1/8" F - 1/4" QD Plug | 26" (660mm) | 13 Lb (5.90 Kg) | 115-010- |
$594.00
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8" (203mm) | 3.5" (89mm) | 1/8 F | 30 psi (2.07 bar) | 15 psi (1.03 bar)/34.6' (10.55 m) | 1/8" F - 1/4" QD Plug | 21" (533mm) | 11 Lb (4.99 Kg) | 115-008- |
$529.00
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6" (152mm) | 3" (76mm) | 1/8 F | 30 psi (2.07 bar) | 15 psi (1.03 bar)/34.6' (10.55 m) | 1/8" F - 1/4" QD Plug | 19" (483mm) | 10 Lb (4.54 Kg) | 115-006- |
$443.00
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4" (102mm) | 2.5" (64mm) | 1/8 F | 30 psi (2.07 bar) | 15 psi (1.03 bar)/34.6' (10.55 m) | 1/8" F - 1/4" QD Plug | 16" (406mm) | 6 Lb (2.72 Kg) | 115-004- |
$410.00
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3" (76mm) | 2.5" (64mm) | 1/8 F | 30 psi (2.07 bar) | 15 psi (1.03 bar)/34.6' (10.55 m) | 1/8" F - 1/4" QD Plug | 16" (406mm) | 6 Lb (2.72 Kg) | 115-003- |
$389.00
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When working with pipelines that carry oil, fuel, or other petroleum-based fluids, isolating a section is often required for maintenance, testing, or repair activities without shutting down the system. The Multi-Flex® Oil-Resistant Pipe Plug 115 Series from Petersen Products is specifically engineered for this purpose. Designed with an oil-resistant elastomer compound, this inflatable pipe plug provides reliable sealing performance in service environments while maintaining flow control through an integrated bypass feature. It allows operators to isolate pipeline sections efficiently while still permitting a regulated flow through the bypass line, making it suitable for maintenance operations, pressure testing, and system isolation in demanding industrial applications.
How the Multi-Flex® Oil-Resistant Bypass Pipe Plug Works
The Multi-Flex® oil-resistant pipe plug with bypass is simple in design but powerful in performance. Here’s how it works.
- Insert and Position: The deflated plug is inserted into the pipe at the desired location. Its flexible construction allows it to conform to minor irregularities such as scale buildup, or non-uniform pipe walls.
- Inflate to Seal: Air or another inflation medium is introduced through the inflation valve. The rubber element expands outward, pressing against the pipe wall with uniform, circumferential force. Inflation pressure drives the seal. The greater the pressure within design limits, the more secure is the hold against the pipe wall.
- Bypass Flow Continues: While the plug seals the pipeline, the integrated bypass tube allows controlled flow through the plug. Flow rate can be regulated through the bypass connection.
- Oil-Resistant Materials: The elastomer compound resists swelling and degradation when exposed to petroleum products, helping maintain sealing performance.
- Deflate and Remove: After use, the plug is deflated and removed. The pipeline can then return to normal operation.
Key Features of the Multi-Flex® Oil-Resistant Bypass Pipe Plug
The 115 series oil-resistant pipe plug is designed for a long haul with several key features that set it apart:
- Oil-Resistant Construction: Manufactured from ballistic nylon reinforced nitrile designed for exposure to oils, fuels, and other petroleum-based liquids.
- Puncture and Tear Resistance: Reinforced construction improved durability and extends service life compared to standard rubber plugs. Materials can be selected to meet specific chemical and temperature requirements.
- Compact Size: The plug has small deflated diameter and flexibility navigates through small openings.
- Multi-Flex® Design: It adapts to the natural irregularities in the pipeline, ensuring a tight seal, even in pipes that aren't perfectly smooth.
Applications of the Multi-Flex® Oil-Resistant Bypass Pipe Plug
The Multi-Flex® oil-resistant pipe plug with bypass is ideal for many industrial applications, especially when dealing with pipelines that carry petroleum-based products. Here are some of the most common uses:
- Pipeline Testing: Ideal for isolating pipeline sections during pressure testing while maintaining flow through the bypass tube.
- Oil or Fuel Pipeline Maintenance: Used when performing maintenance tasks such as valve replacements, repairs, or cleaning in pipelines that transport petroleum products.
- Temporary Isolation: Enables isolation of specific pipeline sections without shutting down the entire system, ensuring operational continuity.
- Flow Control during Pipeline Repair or Inspection: Allows regulated flow while you perform repairs or inspections, which is crucial for keeping systems operational.
- Service in Industrial Pipelines: Perfect for oil and gas refineries, and other industrial systems requiring temporary sealing and controlled bypass functionality during service operations.
Request a Quote for Multi-Flex® Oil Resistant Bypass Pipe Plug
Our team can help you to select the right Multi-Flex® Oil-Resistant bypass pipe plug for your size, pressure, and chemical requirements.
Request a quote today to get the best size and configuration of the Multi-Flex® Oil Resistant Pipe Plug,115 series for your project at sales@petersenproducts.com or 262-692-3100
Frequently Asked Questions
- What sizes are available for the Multi-Flex® Oil-Resistant Pipe Plug?
The 115 series is available in a range of sizes up to 96” but larger sizes are available on special order. Whether you’re working with a small pipeline or a large industrial system, there's a Multi-Flex® pipe plug that will fit. Refer to Product Specifications for exact size ranges.
- What operating temperature range can the Oil Resistant Inflatable Pipe Plug handle?
Operating temperature for standard plugs is 220 F but elastomer material and application are available for most temperature requirements. The oil-resistant inflatable pipe plug is built for industrial pipeline environments where temperature variations are common. It generally performs well within moderate to elevated temperature ranges found in oil and gas operations. However, extreme heat or freezing conditions may affect flexibility and sealing efficiency, so it’s best to confirm application-specific limits before deployment in unusual environments.
- Is this plug only suitable for oil pipelines?
While the oil-resistant inflatable pipe plug is designed for oil and fuel pipelines, it can be used in any pipeline where fluids are being transported.
























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