H-Series™ Manway

Give your critical processes the benefit of all three with the H-Series™ Manway by HOLLOWAY AMERICA. The HOLLOWAY H-Series™ Manway has set the pharmaceutical/biotech industry standard since the early 1990s. With tens of thousands of units in service today, the H-Series™ has a near-flawless track record of reliability, cleanability, and versatility.

Want our H-Series™ Manways delivered to your production floor with full documentation in a matter of days? Our stocking program makes it possible. Reach out to us for more information.

Put HOLLOWAY's well-crafted pressure vessel manways to work.

Designed by our expert staff of engineers to achieve higher pressure with fewer lugs, our H-Series™ pressure vessel manways make production processes easier with a standardized clamp/lug assembly for easy access—not to mention a sanitary design with proven riboflavin-test acceptance. With our standard hinge and handle design, the H-Series™ is offered with an optional stainless spring assist to create a fast, easy-opening manway.

Have a need for a special fitting or further options on your H-Series™ Manway? Let our experienced component staff make your ideas a reality. When you require perfection and precision for your vessel closure, you can trust the complete line of H-Series™ Pressure Manways from HOLLOWAY AMERICA.

H-Series™ Manway Materials & Finishes

HOLLOWAY offers our H-Series™ manways for tanks in multiple material types that go above and beyond industry requirements, including (but not limited to):

• 316L
• 304L
• C-276
• C-22
• AL-6XNÆ*
• and many others.

Material I.D. and O.D. finishes are available from Mill to 5Ra H-Electropolish™.

The H-Series™ can be provided with the gasket material type best suited for your process, including Silicone, Viton®*, EPDM, Teflon-encapsulated units, and others upon request.

*Viton® is a trademark of DuPont Performance Elastomers, LLC; AL-6XN® is a trademark of Allegheny Ludlum.

H-Series™ Manway Dimensions

We engineer the H-Series Manways for tanks with optional spring assist in these dimensions:

• 1/4" thick cover & collar on sizes 8" – 26"
• 5/16" thick cover on sizes 28" – 48"
• 6" standard collar length (collars up to 72" are available)

H-Series™ Manway Dimensions

* The H-Series Manway weights are estimated based upon the manway size listed on the chart using the lowest lug configuration, hinge and handle. For each additional lug added to the manway, add 5lbs to the weight.