25mm XC DBB Valve

The XC Double Block and Bleed valve is based on standard Ball, Needle, Ball configuration with a 1/2″ NPT screwed vent (plugged). Available from 1″ to 3″ in size and pressure class from 150lbs to class 2500lbs available in 3 standard materials.

Fire Safe Design
UNI Directional Flow
Bi Directional Flow
Servicing Kits
Severe Temp Rating
NACE Approved
Specifications & Ratings
The XC DBB Valves offers a ball, needle, ball configuration based on soft seated PEEK design, AED O rings as the primary seal and a graphite seal for the fire safe integrity. The XC range is available from 1" to 3" up to class 2500lbs in 3 materials. Carbon Steel LF2, 316 Stainless Steel and Duplex. The range is ISO 15848 Part 1 qualified, PR-2 qualified and endurance tested to over 1200 cycles. The range is full qualified to ISO 10497/API 607
Valve Types
Double block and bleed
Pressure Rating
Class 150 - 2500 (API Optional)
Temperature Rating
-46°C up to 200°C
Bore Size
Connection Size
1" - 3"
  • Raised Face
  • Flat Face
  • Ring Type Joint
Flanged / Threaded / Butt Weld/Socket Weld
Lever Isolates and T bar vent.
Material Options
Materials include Carbon Steel, Stainless Steel and Duplex Other exotic materials available upon request.
Material Construction
  • Stainless Steel 316
  • Duplex
  • Carbon Steel. Other Materials can be made available upon request
Trim Material
  • All trim materials are a standard UNS S31803 (22% Duplex). Other materials available on request
Bolting Materials
  • L7M
  • B8M. Coatings available on request
Material Traceability
Testing & Design Standards
All Alco Valves Group products are designed to comply with or exceed internationally recognised products. API 598 approved tested.
Testing Standards
  • API 598
  • API 6A
  • ISO 5208
Design Specifications
B16.34 or API 6A
Fire Safe Standards
  • ISO 10497
  • API 607
Relevant Approvals
Customer specifications can be adhered to.