MODCO FIGURE 500 QUICK-OPENING CLOSURE
Modco Lug Wrench
Closure caps, Family I (2″–14″), are designed with signature Modco® Lugs. The custom designed wrench fits the lugs for quick operation of the closure.
Modco Cat Tool
The Cat Tool is a specially designed tool for opening Family II and Family III closures. Two sizes are available, small and large. The small Cat Tool is required on closure sizes 16″-24″ (Family II). The large Cat Tool will be needed on sizes 24″-48″ (Family III).
Design and Features
Accident prevention is a primary concern of Modco®. As a standard option, Modco offers a Pressure Alert Valve (PAV) on our 6″ and larger closures. The PAV complies with ASME standards and warns the operator of pressure behind the closure cap. When internal pressure
is built up, it is virtually impossible to unscrew the cap due to thread contact. Optimally, if the cap was rotated in the slightest amount, the pressure energized o-ring relaxes. The trapped pressure emits around the threads. At this precise moment, thread engagement remains at
least 95% preventing the cap from disengaging from the hub. The Acme threaded design rates Modco® closures a leader in safety.
Pressure Alert Valve (PAV)
Our PAV is positioned on the hub and attached by a short chain, not allowing the cap to be opened without removal of the PAV. This ensures no accumulated pressure is within the vessel or pipe. Even though the PAV is able to bleed down pressure, it is designed to act only as a safety feature for the operator. Required by ASME, a PAV is mandatory on all closure sizes. A PAV will come standard on 6” and larger, but offered for 2″ thru 4″ as a purchased option.
With our focal point on manufacturing, the Quality Management System of Modco assesses our after-sales and supply-chain organizations, making every effort to increase customer satisfaction by actively improving our quality of service. Our customer feedback empowers the enhancement of our designs and processes through our manufacturing and engineering organizations and back to our suppliers.
We oversee component quality by assessing our supplier quality performance in manufacturing and by performing detailed on-site evaluations of potential suppliers.
O-Ring Compounds and Durometers
In order to correctly select o-ring material, pressure, temperature and chemical environments need to be accurately accessed. Nitrile (Buna-N) is the standard o-ring material. This material is a widely used o-ring elastomer having excellent resistance to petroleum products, compression set, tear and abrasion resistance. Temperature range for Buna-N is -40 to +250 degrees F. Viton o-ring material would be recommended for higher temperature ratings that exceed +250 degrees F. Alternate compounds and durometers are available for specified
applications upon request.
ASME Code-stamped Closures
Modco® closures can be ASME Code Stamped when required. Code stamping verifies third-party shop inspection of the closure and materials by an Authorized Inspector (A.I.). A U-2A Partial Data Report will be issued to purchaser upon completion by the Inspector.