The QB 12 is the first Q Acoustics subwoofer to feature a 12in driver. The big long-throw driver is powered by an ultra low-distortion 220-watt Class D amplifier for tight, powerful bass response, and features a 50mm voice coil for minimal thermal compression. Equally at home with Q Acoustics’ Concept and 3000i range of stereo and centre speakers, Q B12 is designed to be equally adept at reproducing big Hollywood action moments as it is the deep, subtle textures of bass instruments.

Get top-notch performance with our 2-inch Bolted Bonnet Swing Check Valve, designed to meet industry standards including DN50, 150 LB, PN20, ASTM A216 WCB with SS 316+STL Trim 12. Manufactured according to BS 1868 and API 594 specifications, this valve features an RF design and a renewable seat for durability and reliability in various applications.

2 Inch/DN50 Swing Check Valve, 150 LB, Flanged RF, BS 1868, WCB body with Trim 12

Valve Description:
1841019 Swing Check Valve 2S1RWCB12
Design Standard: BS 1868, API 594
Structure: Bolted Bonnet, Swing type
Nominal size: 2 Inch
Nominal class: 150 LB
Bore Type: Standard Bore
End Connection: RF (Raised Face)
Operation: /
Body Material: ASTM A216 WCB
Trim Material: SS 316+STL, No.12
Face to face: ASME B16.10
Test and inspection: API 598
Key Features: Swing Disc, Renewable Seat

Product Range:
Body material: Carbon Steel, Stainless Steel, Alloy Steel
Normal diameter: 2 - 32 Inch (DN50 - DN800)
Pressure range: Class 150 - 2500 LB
End connection: RF, RTJ, BW
Working temperature: -29℃ - +400℃
Operation: /