giant check valve:

Features:
1) Design: BS1868, ASME B 16.34 API 6D
2) Description: middle bolt connection ends, out side or inside pin structure
3) Size: form 28" - 42"
4) Class: from 150lb - 900lb
5) Connection ends: flange (ASME/ANSI B16.5A, ASME B16.47) SW
  (ASME B16.25)
6) Body main material: WCB LCB, LCC, WC6, WC9, C5, C12, CF8, CF8M, CF3M, CF8C, CK20, CN7M, CD4MCu, CK3MCuN, Cu5MCuC, CN3MN, M35-1, MONEL400, MONEL500, CY40, CW6M
7) Sealing material: F6, F310, CoCrA, Cu, MoNCL, alloy 20, al-bronze 316

Please note this is a condensed catalog.

For a complete version, contact SGOV directly