Jacoby-Tarbox GRQ Engineered Hygienic Clamps deliver uniform gasket compression with minimized gasket intrusion. This controlled loading helps protect process integrity across demanding hygienic service applications.
The patented design combines a Block A clamp profile, double-pin hinge, and flat nut seat. Together, these features support even radial loading and greater flexibility for challenging alignments. GRQ hygienic clamps also reduce the torque required to seal the gasket. Therefore, they can lower clamp stress and support longer joint life.
Jacoby-Tarbox offers ergonomic wing-nut and hex-nut versions. Standard clamps use 304 stainless steel, while 316 stainless steel remains available by special order. The range covers small tubing connections through 12-inch Schedule V sizes. However, allowable pressure depends on the selected clamp size.
Specialty configurations support rupture discs, thermal cycling, vibration, and connection security. These options help facilities match the clamp design to specific process requirements.
Westech Industrial supplies Jacoby-Tarbox GRQ hygienic clamps across Canada. Our team can support product selection, replacements, upgrades, and broader service requirements. Westech can also support projects that include custom fabrication and process integration.
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Description
FEA-Optimized Clamp Geometry
Jacoby-Tarbox engineers used Finite Element Analysis to optimize gasket load and clamp geometry. The resulting design combines a Block A channel profile, double-pin hinge, and flat nut seat.
Together, these features create uniform radial loading around the hygienic joint. The design also reduces concentrated point loads that can bend the joint or create gaps.
Uniform Gasket Compression with Less Torque
GRQ hygienic clamps direct force toward a discrete contact point near the inside diameter. This approach concentrates sealing energy where the gasket needs it.
As a result, the clamp can seal the gasket with less torque. Lower torque also reduces clamp stress and supports longer joint and gasket life. Moreover, uniform compression lowers the chance of gasket intrusion into the process bore.
Flexibility for Challenging Alignments
Hygienic connections do not always align perfectly during installation or maintenance. Therefore, the large Block A profile provides added clearance for less-than-perfect joints.
The double-pin hinge also helps the clamp accommodate alignment variation. Additionally, the profile accepts flanged or lipped gaskets without interfering with the seal.
Flat Nut Seat Protects Clamp Components
The flat nut seat and pocket transfer load without deforming the clamp fork, lug, or arm. This design helps prevent bending caused by overtightening or uneven loading. It also keeps the nut seated more securely during clamp-up.
Wing Nut and Hex Nut Options
Jacoby-Tarbox offers GRQ engineered hygienic clamps with an ergonomic wing nut or a hex nut. The tapered wing nut provides an easy grip for manual tightening.
In contrast, the hex nut supports controlled tightening with a torque wrench and socket. Both versions use the same optimized clamp geometry.
Specialty Clamps for Demanding Service
The GRQ-RD configuration supports rupture discs and bursting disks. It includes relief for the disc tab, tag extension, and sensing wires. The design maintains contact around more than 340 degrees of the ferrule.
This 316 stainless steel clamp includes a hex nut and covers sizes from 1 to 4 inches. The Block A profile also accommodates specialty rupture-disc gaskets, including metal-filled PTFE materials.
The GRQ-LL live-load option supports systems exposed to thermal cycling or vibration. It maintains force at the clamp forks as metal expands, contracts, or vibrates. Therefore, it suits demanding steam-in-place systems and other dynamic applications.
GRQ SafeGuard for Connection Security
The optional GRQ SafeGuard creates a tamper-resistant hygienic union. Aligned security holes accept tags, locks, or other securing devices.
The cross pin also limits nut travel and helps maintain the selected seal load. SafeGuard sizes cover mini clamps, 1 through 5-inch clamps, and clamps 6 inches or larger.
Applications
GRQ hygienic clamps suit processing systems that require dependable gasket compression, clean connections, and repeatable clamp-up. The available configurations support standard hygienic joints and more challenging operating conditions.
- Pharmaceutical and biopharmaceutical process systems
- Biotech production equipment
- Food and beverage processing lines
- Hygienic piping and sanitary equipment connections
- Clean-in-place and steam-in-place systems
- Process connections with challenging alignment
- Thermal cycling and vibration applications using GRQ-LL
- Rupture disc and bursting disk assemblies using GRQ-RD
- Hygienic connection replacements and process upgrades
- Applications requiring tamper-resistant unions with GRQ SafeGuard
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Manufacturer Info
Clark-Reliance® Corporation is a global leader in the level indication and control, sightflow indication, filtration and separation industries. The company’s well-known brands constitute the broadest line of level instrumentation for boilers and other equipment found in utilities, refineries, chemical processing and other industries.
Website: https://www.clarkreliance.com/
