•  Jumbo Siamese Clappered- 50K

Kochek Fire Equipment


This Jumbo Siamese is explicitly designed to supply one large diameter hose from two large diameter hose lines.

The Jumbo Siamese has swing out clappers for improved flow. The valve is ideal for rural water applications where two pieces of apparatus are supplying one supply line from the draft.


  • Weight:  30 lb.
  • Length:  17”
  • Width:    15”
  • Height:   9”
  Description  Part Number
 4” Storz by (2) 4” Storz   50K0404
 4” Storz by (2) 5” Storz   50K0405
 5” Storz by (2) 4” Storz   50K0504
 5” Storz by (2) 5” Storz   50K0505


color code this valve for free

Color code this item, at no additional charge. Color coding helps to identify your equipment at mutual aid calls quickly.*

* Color coding applies only to the threaded/Storz connections, all valve bodies will remain Silvadillo and handles Black. 


Kochek Finishes

Kochek’s standard adapters are furnished in Hard Coat Anodized Aluminum. Hard Coat is a high-quality, durable finish that is most often specified by manufacturing engineers. They exhibit the following qualities.

  • Meets mil spec 8625 Type III class 1
  • 2mil thickness which gives an excellent abrasion and corrosion resistance that has a Rockwell C rating of 65-70 and meets ASTM B117 specification of 336+ hours of salt spray resistance.

Note:  Also available are Clear and Orange anodized. They are a high-quality, durable finish that provides excellent corrosion resistance and meets the ASTM B117 specification of 336+ hours of salt spray resistance and has a Rockwell C rating of 60-65.


kochek hard coat color choices


kochek powder coat choices
Powder coat is a polymer resin based dry finish that is a durable non-conductive coating to help inhibit electrolysis and is color consistent to a delta of 0.5 and available in many vivid colors.

CLICK HERE to view the available powder coat color choices

Also offered are the following additional choices:

  • K-Brite (polished aluminum, no coating)
  • K-Chrome (chrome plated aluminum), please call for pricing

Laser Engraving

laser engraved adapters

We also offer custom laser engraving of your adapters for an additional charge. If you require this option, please select that option and type in the box the name or initials you want laser engraved. The size of your adapter limits us.


Delivery Times

kochek delivers quick

Delivery times are variable by the size and finishes you select. There is no definitive answer; Standard Silvadillo/Black can usually ship quicker. Other options can add a few weeks to lead times. If you require this item in a rush, please give us a call, and we will be most happy to contact our factory for a current lead time.


Fire-End is a premiere distributor for the entire line of kochek Fire Equipment.

We are Kochek specialists. We deal with various threads and finishes daily. Our goal is to help you order the correct item the first time. However, many items are made to order. Unfortunately, once your order is submitted, they are not subject to cancelation or return. Please give us a call before ordering if you are uncertain of your thread types, finishes, sizes, colors, or have any other questions.



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Jumbo Siamese Clappered- 50K

  • $907.50

Available Options

Delivery/Shipping Availability: Item ships directly from manufacturer. Approximate delivery in 3-5 weeks.

Tags: Kochek, Jumbo Siamese Clappered- 50K, LDH Appliances, Valves, kochek, 50k