background image

Patents & Trademarks
- US PATENTS: 9,927,058 | 9,810,364 | D894,349 | 10,746,339
- CANADIAN PATENT: 3,004,787
- CANADIAN INDUSTRIAL DESIGN: CA 186293
- EUROPEAN PATENT: 3,377,797 B1
- EUROPEAN PATENT [Germany]: 602016051864.3
- EUROPEAN UNION DESIGN REGISTRATION: 00628264-001
- INTERNATIONAL TRADEMARK REGISTRATION: 1550298
- Other US and Foreign Patents Pending

®

INSTALLATION MANUAL

www.USAIndustries.com

(713) 941-3797 • (800) 456-8721

315 State Street • S. Houston, TX 77587

Small

 Double Block and Bleed (DBB) Plug

Manufactured Exclusively by USA Industries, Inc.

an ISO 9001:2015 Certifi ed Company

Summary of Contents for GRIPSAFE Series

Page 1: ...T Germany 602016051864 3 EUROPEAN UNION DESIGN REGISTRATION 00628264 001 INTERNATIONAL TRADEMARK REGISTRATION 1550298 Other US and Foreign Patents Pending INSTALLATION MANUAL www USAIndustries com 713 941 3797 800 456 8721 315 State Street S Houston TX 77587 Small Double Block and Bleed DBB Plug Manufactured Exclusively by USA Industries Inc an ISO 9001 2015 Certified Company ...

Page 2: ...afe pipe plugging technology This manual covers the proper use of this technology to ensure safe operating conditions WARNING Do not use GripSafe equipment before fully reading and comprehending this manual Failure to follow this manual in full may result in injury and or damage to equipment All necessary sockets wrenches and lifting device to install this equipment are available for rental or pur...

Page 3: ...est pressure of your system is subjected to is in accordance with all applicable industry and site specific standards We recommend using Water as the test medium Before pressurizing the system vent all gases from the vessel If pneumatic testing all attempts to limit potential damage to personnel or equipment is critical USA Industries Inc recommends Nitrogen as the medium for pneumatic testing as ...

Page 4: ...ark identifications go to https www USAIndustries com piping isolation products Gripsafe Patents Trademarks 3 Parts This manual references the part numbers identified below throughout the document Figure 1 GripSafe Mid Grip DBB Diagram Figure 2 With Optional Valve and Port for Cooling Upon Request Page 4 of 16 ...

Page 5: ...3797 2021 USA Industries Inc FRM 22 1 Rev G For most current patent and trademark identifications go to https www USAIndustries com piping isolation products Gripsafe Patents Trademarks Table 1 GripSafe Bill of Materials Page 5 of 16 ...

Page 6: ...A Industries Inc FRM 22 1 Rev G For most current patent and trademark identifications go to https www USAIndustries com piping isolation products Gripsafe Patents Trademarks 4 Specifications Figure 2 GripSafe DBB Dimensions Diagram Page 6 of 16 ...

Page 7: ...7 16 Open End 1 4 FNPSM 1 4 MNPT 1825 2500 40 STD 40S GS D S 0200 040 1 94 2 00 2 25 0 130 8 2 27 75 30 50 15 16 7 16 Open End 1 4 FNPSM 1 4 MNPT 10000 2500 80 XS 80S GS D S 0200 080 1 81 1 87 1 99 0 130 7 7 27 75 30 50 15 16 7 16 Open End 1 4 FNPSM 1 4 MNPT 10000 2500 160 GS D S 0200 160 1 60 1 65 1 81 0 085 6 9 27 75 25 35 15 16 7 16 Open End 1 4 FNPSM 1 4 MNPT 10000 2500 XXH GS D S 0200 XXH 1 4...

Page 8: ...ediately incapable of being pushed out of the pipe in the event of accidental discharge of pressure i e when the Wedges are fully inserted into the pipe Method 2 Free Insertion is used when the plug is met with an obstruction in the pipe that is not allowing free entry of the plug into the pipe i e weld droop or other pipe interior discontinuity 5 2 Method 1 Auto Locking for immediate gripping upo...

Page 9: ... retracted under the bodyline of the plug s OD and should fit inside the pipe see Figure 4 The plug is ready to be installed continue to Section 6 6 Installing the GripSafe DBB Plug CAUTION Ensure pipe I D is clean and loose debris is removed to the deepest point the plug will be installed into If the pipe is lined or has an irremovable product and contact USA Industries Inc for support before pro...

Page 10: ... point is not possible See Section 8 for plug removal if necessary A slight rocking motion may assist installation Ensure that the Test Port is oriented to the top of the GripSafe DBB when installing Insert plug to the desired depth The Sealing Compression Ring must be inserted flush with the pipe or fitting face at a minimum If insertion into the pipe proves problematic in this orientation use Me...

Page 11: ...ackpressure pressures It may be desirable to attach a gauge and vent hose assembly backpressure monitoring tee to the Backpressure Vent Port to bleed off any backpressure The hose should be long enough to redirect vapor coming out of the vessel to a safe location away from personnel that may be in the area A valve can be attached to this port to allow safe backpressure removal during plug removal ...

Page 12: ...rom the top of the Compression Hex Nut to the center of the Ported Spacer The plug should be in the desired installation orientation Method 1 or Method 2 see Section 5 Steps 5 2 and 5 3 while measuring this distance 3 Subtract the Weld Zone Depth from the Ported Spacer Center 4 Insert the plug while measuring from the pipe or fitting end to the top of the Compression Hex Nut and stop inserting whe...

Page 13: ...to backpressure resulting from chemical vapors originating beyond the check valve of the vessel that the plug is installed in These vapors can flow by the Check Valve if enough pressure is generated behind the plug to create a 1 3 psi positive pressure differential originating in the vessel beyond the Check Valve Under this condition the result could expose workers to hazardous chemicals inadverte...

Page 14: ... pressure differential between the backpressure and the pressure between the seals will cause the Check Valve to open and allow the fluid and pressure behind the seals into the area between the seals For example if the pressure between the seals is at 50 psi and the vessel generates a back pressure of 100 psi then the check will open and balance the two zones thereby elevating the pressure between...

Page 15: ...osen the Compression Hex Nut Once the seal has broken free from the pipe ID water may flow out from the pipe Be prepared to capture this if desired Continue loosening the Compression Hex Nut until the wedges are fully relaxed NOTE Do not remove the Compression Nut from the Shaft If this happens immediately reinstall the component 9 5 Remove the GripSafe isolation plug from the pipe Completely back...

Page 16: ...A Industries Inc FRM 22 1 Rev G For most current patent and trademark identifications go to https www USAIndustries com piping isolation products Gripsafe Patents Trademarks GripSafe is a registered trademark of USA Industries Inc Page 16 of 16 ...

Reviews: