Quality Control



Precision from Start to Finish

Before Production

Our fully staffed Quality Assurance Department pays attention to the finest details, starting with order entry and continuing through assembly and final inspection. Each customer’s quality requirements are identified during our thorough contract review and incorporated in the technical documentation package before production begins.

On the Shop Floor

Hunt Valve’s products are manufactured under extremely rigid quality control procedures. Quality review and monitoring are involved in all phases of the process. Through supplier audits and purchase order reviews, we ensure that all customer requirements are communicated to our team of qualified suppliers.

On the shop floor, quality control begins with the incoming receipt inspection. The physical material, as well as the certification documents, are inspected to ensure conformance to all contract requirements. Control of the material throughout the entire process is critical to all our components and in-process inspections are carried out during every step of production.

Additional Resources:
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State-of-the-Art Calibration Laboratory for Inspection

With an eye for detail, Hunt’s engineering experts carefully inspect every element of the manufacturing process—from the receiving inspection of the raw material to the final inspection of all components and assemblies. Our inspection equipment is routinely calibrated to ensure exceptional accuracy.

Calibration Laboratory
Our state-of-the-art calibration laboratory maintains control and calibration of all inspection equipment utilized at Hunt Valve. Temperature and humidity are monitored and documented electronically. The lab meets the requirements of Mil-STD-45662, Mil-STD-105 and ANSI Z540.1.

Coordinate Measuring Machine (CMM)
Our team uses this machine to perform dimensional and geometric inspections. The CMM unit is integrated with Solidworks® cad models to serve as an inspection template. It’s also equipped with a laser scanner to provide reverse engineering capabilities.

Optical Comparator
We use an optical comparator equipped with a computerized dimensional readout for enhanced inspection precision.

Hardness Testing
We utilize a state-of-the-art hardness tester to verify heat treat certifications.

Global Leader in Nondestructive Testing Technology

As a leader in nondestructive testing technology, Hunt Valve trains and certifies its engineering staff to meet the requirements of ASNT-SNT-TC-1A and as modified by NAVSEA Technical Publication T9074-AS-GIB-010/271. Our ASNT Level III certified engineers develop new procedures for nondestructive testing in accordance with NAVSEA Technical Publication T9074-AS-GIB-010/271.

Our in-house engineers and technicians perform magnetic particle, liquid penetrant, ultrasonic and visual inspections. We only use qualified labs to perform “RT” and “UT” inspections.

Meeting Standards with Strict Controls and Assembly

Hunt Valve’s engineering team utilizes strict controls and assembly procedures to ensure that each engineered solution meets all contract and drawing specifications, including torque requirements, lubrication certifications and heat trace code markings.

Our engineers implement custom-designed 10,000 psi hydraulic and 10,000 psi nitrogen test units to perform hydrostatic pressure testing. Each test unit is routinely calibrated to ensure accuracy and repeatability of test pressures. Additionally, we have in-house steam testing capabilities for low-pressure applications.

Testing capabilities
Water, Oil, Air and Hi-Pressure Nitrogen (10,000 PSIG)

Qualification Testing
In-house First article, Cycle, Endurance and Contracted Shock, Vibration and Steam

Hydrostatic testing of blast deflector swivel joints, used for transmitting cooling water flow to jet blast deflectors on U.S. Navy aircraft carriers.

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