08 39 19/WALBuyLine 9365

Lip Seal Gasket Flood Barriers

Inflatable GasketFlood Barriers &Doors

Watertight &Airtight Doors

Watertight Hatches

Special Closures

3333

8888

5555

6666

7777

Walz & Krenzer, Inc.

Flood

Barriers

and

Watertight

Closures

since

1939

Removable Lip Seal Flood Barrier System

Watertight Door and Window Watertight Hatch

4444 Compression GasketFlood Barriers

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Walz & Krenzer, Inc.

W alz & Krenzer, Inc. (WK) is a whollyU.S. owned small business specializingin the design and supply of custom fab-

ricated watertight and airtight doors, flood barri-ers, and hatches. Since 1939, the company hasoffered a wide range of competitively priced man-ual and power operated doors, flood barriers, andhatches designed to seal any size opening againstwater, chemical, air, and blast pressure. WK offersunparalleled experience in the design of customwatertight closures, from the most simple floodbarriers to complex power operated (hydraulic/pneumatic) gates and doors.

PRODUCT OVERVIEWAll WK closures are custom designed and manufac-tured to your specifications. Closures can be designedto comply with FEMA, radioactive, blast, or otherrequirements. Watertight doors, hatches, and floodbarriers are supplied for any size opening, and can bedesigned to withstand almost any pressure require-ments. All closures can be operated either manuallyor with hydraulic or pneumatic controls.Compression, lip seal, or inflatable gaskets in theclosure’s panel are secured against the closureframe by securing devices to provide an effec-tive watertight or airtight seal. Installation isachieved by either bolting or welding theframe to an existing structure or by embeddingan integral masonry frame in newly pouredconcrete. All closures are available in steel, alu-minum, or stainless steel. Prior to release formanufacturing, all WK drawings are approved byin-house licensed Professional Engineers.

TECHNICAL SUPPORT

PART 1 GENERAL1.01 Acceptable Manufacturers: Closures shall be

as manufactured by Walz & Krenzer, Inc. orapproved equal.

1.02 Description: Provide flood barrier (water-tight door/hatch) factory assembled withframe(s) and all operating components inaccordance with contract specifications andapproved drawings.

1.03 Design: All WK closures are designed inaccordance with AISC “Specifications forDesign, Fabrication, and Erection ofStructural Steel for Buildings”, TheAluminum Assoc. “Aluminum DesignManual”, and other applicable industry andWK standards. Closures may also be suppliedto ASME code requirements.

1.04 Standards: Comply with the provisions of thefollowing (as applicable):

A. American Welding Society StructuralWelding Codes D1.1, D1.2, D1.3, D1.6.

B. ASME Structural Welding Code Section IXC. ASME Appendix VIII of Section VIII,

Div. 1 – liquid penetrant testing of weldsD. American Society for Testing and Materials

(ASTM) A36, D2000E. American Iron and Steel Institute (AISI) CL

316, 316L, 3042

F. Steel Structural Painting Council (SSPC)SP10, SP71

G. Federal Emergency Management Agency(FEMA) Technical Bulletin 3-93, #102, #114

1.05 Submittals:A. Manufacturers Data – submit installation

and maintenance manualsB. Shop Drawings – submit shop drawings

including dimensioned plans and elevations,parts list, sections and details of all mount-ings and connections.

C. Calculations (optional for critical applica-tions): Submit calculations approved by alicensed P.E. verifying the closure’s ability towithstand the design pressure loading.

D. QA Submittals – submit test reports showingcompliance with specified performance char-acteristic.

1.06 Quality Assurance:A. Manufacturer shall present evidence attesting

to at least five years successful experience inthe design and manufacture of similar clo-sures.

B. All welding shall be performed in accordancewith the requirements of applicable AWS orASME standards.

C. Testing: see “Part 1” under each individualclosure model for specific testing requirements.

1. All closures are factory operationally testedto ensure proper seal and function.2. Compression and inflatable gasket closures

to be shop chalk tested.3. Lip seal gasket closures to be shop leakage tested.

4. Optional testing for critical application: weldsin the “potential leak path” shall be liquid pene-trant tested in accordance with AMSE AppendixVIII of Section VIII, Div. 15. Optional testing for critical application: pro-vide hydrostatic test data certifying that the clo-sure furnished, or a closure of similar design, hasbeen satisfactorily tested to verify that it will with-stand the designed hydrostatic pressure with novisible leakage.

PART 2 PRODUCTSRefer to “Part 2 – Products” specification for eachproduct

PART 3 EXECUTION3.01 Fabrication:

A. The finished product shall be rigid, neat inappearance, and free from all defects, warps,and buckles. All exposed joints and cornersshall be well rounded.

B. The panel and frame shall be flat within 1/8”in any 6’ length.

3.02 Installation:A. Install closures in accordance with manufac-

turers instructions and approved shop drawings.

3.02 Warranty:Closures shall operate satisfactorily and befree of defects for a period of not less thanone year.

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T he lip seal flood barrier offers the flush silladvantage of inflatable gasket floodgates,plus the following additional benefits:

• Ease and speed of use; just place the panelin the frame and slide the latch bolts tosecure. There are no gaskets to inflate orbolts to tighten.

• Increased reliability; there is no inflatablegasket that could lose air pressure.

• Minimal frame construction offersimproved aesthetics.

• Lower costsLip seal flood barriers are available in hinged orremovable configurations. Openings wider than10’ often require multiple panels with remov-able braces. Large panels may be supplied withmounted rollers for ease in transportation andinstallation.Single panel lip seal flood barriers have a verysmall (2") corner radius. These flood barriersoffer a fully watertight seal and are recommend-ed for most applications. The radiused cornersare small enough so as not to present a trippinghazard. In cases where the small corner radiuscreates interference problems or at a junction ofpanels in multi-panel floodgates, square cornerscan be utilized. Very slight leakage may occur atthe square gasket corners, but this leakage rate issignificantly less than the FEMA allowable leak-age rates.When the weight of the removable panel is aconcern, we offer an aluminum composite panelmaterial. Use of this aluminum skinned com-posite material reduces the panel weight byabout 45%.

08 39 19/WALBuyLine 9365

Lip Seal Gasket Flood BarriersModel FP-LS, FP-M, and FG-LS

3

SUGGESTED SPECIFICATIONS

PART 1 GENERALRefer to Technical Support, page 21.06 – Quality Assurance:

C. Perform shop hose or leakage test to ensurecompliance with FEMA allowable leakagerates.

PART 2 PRODUCTS2.01 Product Description:Flood barrier shall be model FP-LS, FP-M, orFG-LS as manufactured by Walz & Krenzer,Inc. or approved equal. 2.02 Materials:

A. Panel: 5052-H32 aluminum plate with6061-T6 alum. stiffeners (mild steel, alu-minum composite, and stainless steel avail-able).

B. Frame: A-36 steel (aluminum and stainlesssteel available).

C. Latches: stainless steel sliding latch boltsD. Gaskets: Walz & Krenzer lip seal gasket, 60

duro with fully molded corners.E. Finish: aluminum plate or aluminum

composite panel primed with INSL-XCheckRust acrylic paint. Mild steel frameprimed with inorganic zinc primer. Finish paint by others after installation.Other finishes available.

2.03 Design:Flood barriers over 10'w and/or 6'h may requiremultiple panels. Multiple panel flood barriersavailable in side-by-side and stacked configura-tions.

SEALED JAMBBOLTED ANGLE FRAME

SEALED JAMBFLUSH BOLTED FRAME

"LIP SEAL" GASKETPANEL STOP

SIDE FRAME

SIDE FRAME

"LIP SEAL" GASKET

PANEL PANEL

PANEL STOP

SEALED SILL

BOTTOM FRAME"LIP SEAL" GASKET

BOTTOM PIN

PANEL

Side hinged lip seal flood barrier – Model FG-LS

Multiple panel removable lip seal flood barrier – Model FP-M

Single panel removable lip seal flood barrier – Model FP-LS

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Compression Gasket Flood BarriersModel FP-C and FG-C

RAISED SILLRECESSED SILLGATE IN PLACE

GASKET

PANEL STOP

PANEL

DOG

LIFT OUT FLOOD GATERAISED SILL SHOWN

DIM "B"

DOG

FRAME

GUIDE

DIM "A"

GRAB HANDLE

PANEL

2.02 Materials:A. Panel: 5052-H32 aluminum plate with

6061-T-6 alum. stiffeners (mild steel andstainless steel available).

B. Frame: A-36 steel (aluminum and stainlesssteel available). Standard 2" sill. Recessedsill optional for lift-out flood barriers.

C. Dogs/Drop Bolts: stainless steel/bronzedrop bolts or dogs. Utilize drop bolts forreduced maintenance and lower cost whereoperation is from outside only.

D. Gasket: ASTM D2000 GR DE neoprenegasket, 25 duro with fully molded corners.Additional gasket material (i.e. viton, sili-con) available for unusual environmentalconditions.

E. Finish: aluminum panel primed withINSL-X CheckRust acrylic paint. Mildsteel frame blasted to near white metal and primed with inorganic zinc primer.Finish paint by others after installation. Other finishes available.

2.03 DESIGN:Flood barriers over 10'w and/or 6'h may requiremultiple panels with mullions. Multiple panelflood barriers available in side-by-side andstacked configurations

C ompression gasket flood barriers offer a100% watertight seal in both hingedand removable configurations. Available

for any size opening, these flood barriers com-press the gasket against the knife-edge of theframe utilizing either drop bolts or rotatingdogs. The standard bottom sill is raised 2" fromthe floor surface, however a recessed sill withremovable flush sill plate is available for comply-ing with ADA requirements. Multiple panel bar-riers are available for large openings. Ease ofinstallation and low maintenance make this typeof flood barrier popular.

SUGGESTED SPECIFICATIONS

PART 1 GENERALRefer to Technical Support, page 21.06 – Quality Assurance

C. Perform shop chalk test to ensure 100%watertight seal.

PART 2 PRODUCTS2.01 Product Description:Flood barrier shall be model FP-C as manufac-tured by Walz & Krenzer, Inc.

4

Removable Flood Barrier for Transit StationModel FP-C

Side Hinged Flood Barrier – Model FG-C

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08 39 19/WALBuyLine 9365Inflatable Gasket Flood Barriers & Doors

Models FP-I, FG-I and WT-ID

I nflatable gasket flood barriers and doorsare recommended when a 100% water-tight seal and a flush bottom sill are

required. This type of flood barrier/door is oftenused for inside applications such as labs andclean rooms. Flood barriers are available in bot-tom hinged, side hinged, and removabledesigns. The gasket(s) can be easily inflatedusing a hand or foot pump, portable com-pressed air tank or compressor, bottled gas orshop air. Power inflation/deflation, local andremote activation, and monitoring are amongthe available options.Both the flood barriers and doors are available inboth single and dual inflatable gasket designs.For cost savings, we recommend only using dualgaskets in critical applications. Care should betaken to maintain a clean sealing surface so asnot to damage the gasket.

SUGGESTED SPECIFICATIONS

PART 1 GENERALRefer to Technical Support, page 21.06 – Quality Assurance:

C. Perform shop chalk test to ensure 100%watertight/airtight seal.

D. Perform air leakage test to ensure 100%watertight/airtight seal.

PART 2 PRODUCTS2.01 Product Description:Flood barrier/door shall be Model FP-I (remov-able panel barrier), FG-I (side hinged flood barrier), or WT-ID (watertight/airtight door) as manufactured by Walz & Krenzer orapproved equal. 2.02 Materials:

A. Flood Barrier Panel: 5052-H32 aluminum(mild steel and stainless steel available)

B. Door Panel: A-36 steel (aluminum andstainless steel available)

C. Frame: A-36 steel (aluminum and stainlesssteel available)

D. Latches: stainless steelE. Gasket: neoprene or EPDM inflatable gas-

ket supplied with standard automotivestyle valve stem and pressure gauge. Fabricreinforced inflatable gasket used for high-pressure applications.

F. Finish: aluminum panel primed withINSL-X CheckRust acrylic paint. Mildsteel frame blasted to near white metal andprimed with inorganic zinc primer. Finish paint by others after installation.Other finishes available.

2.03 Design:Typical operating pressures for inflatable gasketsrange from 0-40 psi. Higher pressures mayrequire the use of compression gaskets.

GASKET

EMBEDDED FRAME (MF)

SECTION AT SILL

5

Removable panel inflatable gasketflood barrier – Model FP-I

Side hinged inflatable gasketflood barrier – Model FG-I

Inflatable gasket door –Model WT-ID

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Models WT-FD-QA and WT-FD-I

W atertight and airtight doors are avail-able in either single or double panelconfigurations for any size opening in

both hinged and sliding designs. Compressiongasket doors offer simple, reliable operation forpressures up to 140 psi. Inflatable gasket doorsare typically designed for a maximum of 40 psiand are often used in interior locations.Compression gasket doors are sealed with indi-vidual dogs or a quick-acting mechanism (handwheel or lever), and can be operable from bothor one side. Double doors are often used wherespace or weight constraints are a concern, andare provided without center mullions to allowfor full access. All doors can be provided formanual or power operation, with options suchas local and/or remote indication or operation,and interlocking available. Frames are availablefor bolting or welding to existing masonryopenings or with integral masonry subframesfor embedding in new pour concrete.Watertight/airtight doors are available in bothvertically and horizontally sliding designs.

SUGGESTED SPECIFICATIONS

PART 1 GENERALRefer to Technical Support, page 21.06 – Quality AssuranceC. Perform shop chalk test to ensure 100%watertight/airtight seal.

PART 2 PRODUCTS2.01 Product Description:Watertight (airtight) door shall be model WT-FD-QA (quick-acting) or WT-FD-I (individuallydogged) as manufactured by Walz & Krenzer orapproved equal. 2.02 Materials:

A. Panel and Frame: ASTM A-36 steel.Available options for panel and/or frameinclude stainless steel types 304, 316,316L, or aluminum.

B. Securing Dogs: Stainless steel dog assem-blies with bronze wedges. Dogs includemeans for adjusting seal compression afterinstallation. Drop bolts are available in lieuof dogs for infrequently used doors.

C. Quick-acting handwheels/levers: stainlesssteel.

D. Gasket: ASTM D2000 GR DE neoprenegasket, 25 duro with fully molded corners.(40 duro used for doors designed to sealagainst a pressure exceeding 20'). Optionalgasket material (viton, silicon, hypalon andothers) available for unusual environmen-tal conditions.

E. Hinges: Hinges include stainless steel pinswith oil impregnated bronze thrust bearings.

F. Finish: mild steel blast to near white metalper SSPC-SP-10. Prime with one coat of inorganic zinc primer. Finish paint byothers after installation. Other finishesavailable.

2.03 Design:A. Frames: Standard frames have 2" sill.

Alternatives include integral masonry sub-frame and/or recessed sills for sliding doors.

B. Operating mechanism: individual dogs ordrop bolts for infrequent use. Quick-acting handwheels or levers for more frequent use.

C. Options include power operation, remoteindication/control/monitoring, viewingwindows, and locks.

6

Quick-acting watertight door – Model WT-FD-QA

Individually dogged watertight door –Model WT-FD-I

Model WT-FD-I

Watertight & Airtight Doors

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08 39 19/WALBuyLine 9365Watertight Hatch

Models WTH-F and WTH-R

W atertight and airtight hatches areavailable in both raised and flushdesigns for any size or pressure

requirement. Flush hatches are used in foot orvehicular traffic areas. Compression gasketsprovide efficient sealing with extremely lowmaintenance. The gaskets are compressedagainst the frame by either drop bolts or indi-vidual dogs for hatches used infrequently, or byhandwheels for hatches that see more frequentuse. Operation can be from either one side orboth sides. Frames and coamings can be sup-plied for bolting to an existing masonry surface,for welding to an existing metal frame, or witha masonry subframe for embedding in newlypoured concrete.Options include spring balancing or gas springsfor larger or heavy hatches, power operation,and hold open braces.

SUGGESTED SPECIFICATIONS

PART 1 GENERAL

Refer to Technical Support, page 2

1.06 – Quality AssuranceC. Perform shop chalk test to ensure 100%

watertight/airtight seal.

PART 2 PRODUCTS

2.01 Product Description:Watertight (airtight) hatch shall be modelWTH-F (flush hatch) or WTH-R (raisedhatch) as manufactured by Walz & Krenzer orapproved equal.

TYPICAL FLUSH HATCH CROSS SECTIONS

CLEAR OPENING

DOG

HINGE

BOLTED FRAME EMBEDDED FRAME

7

2.02 Materials:A. Panel and Frame: ASTM A-36 steel.

Available options include stainless steeltypes 304, 316, 316L, or aluminum.

B. Securing latches: stainless steel dog assem-blies with bronze wedges. Stainless steel &bronze drop bolts available for infrequent-ly used hatches.

C. Quick-acting handwheels: stainless steelD. Gasket: ASTM D2000 GR DE neoprene

gasket, 25 duro with fully molded corners.(40 duro used to seal hatches against a pres-sure exceeding 20'). Additional gasketmaterial including viton and silicon avail-able for unusual environmental conditions.

E. Hinges: Hinges include stainless steel pinswith oil impregnated bronze thrust bearings.

F. Finish: mild steel blast to near white metalper SSPC-SP-10. Prime with one coat ofinorganic zinc primer. Finish paint by others after installation. Other finishesavailable.

2.03 Design:A. Frames: for bolting to existing masonry

surface, for welding to metal frame, orwith masonry subframe for embedding innew pour concrete. Extended coamingsavailable.

B. Operating mechanism: individual dogs ordrop bolts for infrequent use. Quick-act-ing handwheels for more frequent use.

C. Options: power operation, spring balance,gas springs, and hold open braces.

TYPICAL RAISED HATCH CROSS SECTIONS

DROP BOLT

MASONRY OPENING

DOG

HINGE

BOLTED FRAME EMBEDDED FRAME

Raised hatch – Model WTH-R

Flush hatch – Model WTH-F

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Walz & Krenzer, Inc.91 Willenbrock Road - Unit B4, Oxford, CT 06478PHONE: 203-267-5712 FAX: 203-267-5716 E-MAIL: sales@wkdoors.comVisit us on the Web at www. floodbarriers.com

Special ClosuresEngineering + Experience = A Winning Tradition

W alz & Krenzer specializes in thedesign of custom watertight closuresfor any application. With over 60

years of experience in both the marine andindustrial fields, WK can offer you the rightsolution for your application. Our experiencedengineering staff provides assistance from thespecification stage through installation.Whether manually or power operated, for highor low pressure, we combine decades of experi-ence with today’s technology. Offering compet-itive pricing and fast delivery, WK provides afully engineered product, which will complywith all specifications and regulations. Each clo-sure is custom designed, engineered, and manu-factured to your requirements. After receipt ofan award, WK will prepare and submit calcula-tions and shop drawings for approval. All pro-duction drawings are approved by in-houselicensed Professional Engineers, and are manu-factured in the US by small businesses.

Over the past 60 plus years, Walz & Krenzer hassupplied special purpose closures for nuclearfacilities, test labs, hospitals, and other facilitieswith very specific design criteria (wind, blast,radioactive, gas, and water pressures). The morecomplex your requirements, the more you needWK!

Hydraulically oper-ated flip-up floodgate for vehicle access shown during installation

Horizontally sliding flood barrier

Flip-up flood barrierOutage hatch/door for nuclear facilityduring installation

Raised watertight hatchwith counter balance

Vertically sliding flood barrier

An ISO 9001:2000 Company

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