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The MARPAC Unipac 880 and McCANNA M-802 Ball Valves provide a quality, low-cost solution to the needs of high-pressure applications requiring fire-safe valves. 

In its standard configuration, the Unipac 880, utilizing the MARPAC FIRE-GARD valve design, was tested and conforms to API-607 fire-safe standards for ¾" through 2" sizes. 

This design includes flexible graphite stem packing, and secondary metal-to-metal seating, which provides safe operation of the valve after a fire. 

The Unipac 880 Ball Valve is rated for positive, bubble tight shutoff to 2,000 psig, offering excellent performance in applications from -45°C to 232°C (-50°F to 450°F).
Features
  • Low operating torque provided by specially designed RTFE seats. Notches on the outside diameter equalize pressure on both sides of the upstream seat
  • Safety is ensured by anti-blowout stem design
  • Reliable stem seal results from superior stem packing arrangement with RTFE thrust washer as a primary seal and secondary adjustable stem seal of flexible graphite
  • Automatic compensation for stem seal wear with live-loaded stem seal. 2000 psig in all sizes using RTFE seats
  • Body leakage virtually eliminated with unibody design
  • Product quality ensured through use of investment cast carbon or stainless steel body
  • Round handle standard on ¼" to 1" sizes and optional on 1¼" to 2" sizes. Lever handles on ¼" to 1" option available
  • Threaded ends to ASME 1.20.1

1 - 1 of 1 Part Numbers
880
880
  • Size - 1/4"
  • Body Material - Carbon Steel
  • Trim Code - 316 Stainless Steel Ball & Stem
  • Seat Material - RTFE
  • Seal Material - FIRE-GARD Flexible Graphite
  • Handle Code - Lever Handle
  • Service Preparation - Standard
1 - 1 of 1 Part Numbers

Specifications

Approvals & Certifications

  • API-607

Ball Material

  • 316 Stainless Steel

Enclosure, Body Material

  • Carbon Steel WCB
  • Stainless Steel CF8M

Flow Capacity

  • 3 to 81 Cv

Gland Material

  • 316 Stainless Steel

Handle Assembly Material

  • Plastic-Coated
  • Steel
  • Zinc-Plated

Materials of Construction

  • End Adapter: 316 Stainless Steel
  • End Adapter: Carbon Steel AISI 1020
  • Locking Pin: 304 Stainless Steel
  • Thrust Washer: RTFE (15 % Glass-Filled PTFE)

NPT Connection

  • 1” NPT Female
  • 1/2” NPT Female
  • 1/4” NPT Female
  • 1-1/2” NPT Female
  • 1-1/4” NPT Female
  • 2” NPT Female
  • 3/4” NPT Female
  • 3/8” NPT Female

Nut & Bolt Material

  • Stem Nuts: Carbon Steel
  • Stem Nuts: Zinc-Plated

Operating Pressure

  • psi: 2,000 (kPa: 13,790, bar: 137.9)

Operating Temperature

  • -45° to 232° C (-50° to 450° C)

Packing Material

  • Flexible Graphite

Seat / Seal Material

  • Seal: Fire Gard Flexible Graphite
  • Seat Retainer: 1020 Carbon Steel
  • Seat Retainer: 316 Stainless Steel
  • Seat: RTFE (15 % Glass-Filled PTFE)

Size

  • Valve: 1/4 to 2” (6 to 50 mm)

Spring Material

  • Belleville Spring Washers: 302 Stainless Steel

Stem Material

  • 316 Stainless Steel

Trim Material

  • 316 Stainless Steel

  • High Pressure Applications

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