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3 or 4 in. Tight-Fill Top-Seal Adaptors
3 or 4 in. Tight-Fill Top-Seal Adaptors
3 or 4 in. Tight-Fill Top-Seal Adaptors
One Year Manufacturer Warranty

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OPW 633T 3 or 4 in. Tight-Fill Top-Seal Adaptors

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Model # Description Price Qty
633T-8075 4 in. Hardcoated Aluminum, with Lugs $59.46
633T-8076 4 in. Bronze, with Copper Lugs $87.82
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OPW - 633T - 3 or 4 in. Tight-Fill Top-Seal Adaptors
OPW 633T Top-Seal Adaptors thread onto the fill pipe of underground storage tanks, and are designed to mate with top-seal delivery elbows. Use OPW 634TT, 634TE or 634TTP Top-Seal Caps with 633T Adaptors. Tight-Fill Top-Seal Adaptors are installed in spill containment manholes on the fill riser pipe from an underground fuel storage tank. They mate with the gravity drop delivery elbow on the transport truck.
  • Easy Installation - Integral internal wrenching lugs are provided for installing in the confined space of spill containers.
  • Manufactured from Durable, Corrosion-Resistant Materials - Bronze, hardcoat aluminum and composite Duratuff®.
  • Accommodates 633LC Lock Clamp - 4" x 4" 633T (E) models incorporate dual notches in the base to accept 633LC Clamps.
Product # Elbow Size Riser Thread A B Weight Material
in. mm in. mm lbs. kg
633T-8060 3 3 3-19/32 41 1-5/8 92 0.96 .44 Bronze
633T-8070 3 4 3-19/32 68 2-11/16 92 0.71 .32 Hardcoated Aluminum
633T-8075 4 4 4-55/64 75 2-31/32 124 0.82 .37 Hardcoated Aluminum
633T-8076 4 4 4-55/64 75 2-31/32 124 2.70 1.23 Bronze

Note: Maximum height of adaptor is 2-11/16" (68 mm).