HepvO waterless sink trap self sealing RV drain valve
    HepvO waterless sink trap self sealing RV drain valve
HepvO waterless sink trap self sealing RV drain valve

HepvO Waterless Sink Trap for 1-1/4" Tailpiece with Angled Adapter | BV1B/UA

Regular price
$34.99
Sale price
$34.99
Regular price
$49.99
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✓ Universal fit — standard sizes and connections used across most RVs.

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Free Shipping & Free 30-Day Returns — prepaid return label, no restocking fee. Details

The HepvO BV1B/UA kit is the version of the HepvO waterless sink trap for sinks with a 1-1/4" tailpiece, common on RV bathroom lavatories. It uses the same 1-1/2" HepvO valve as our BV1B/UB kit, but comes with a 1-1/4" in-line inlet adapter (CV7A/U) instead of the 1-1/2" one. The outlet connects to standard 1-1/2" drain pipe.

Unlike a conventional P-trap, HepvO does not hold a water seal. A self-sealing elastomeric membrane opens when water drains and closes afterward to block sewer and gray tank odor, so there is nothing to evaporate, slosh out on the road or freeze. The included angled adapter lets you install it horizontally or at an angle under shallow sinks.

Specifications

  • Brand: HepvO (Wavin)
  • Part number: BV1B/UA
  • Type: Waterless sink trap / sanitary waste valve
  • Inlet: 1-1/4" slip joint via in-line adapter CV7A/U
  • Outlet: 1-1/2" slip joint
  • Material: Polypropylene
  • Color: White
  • Kit contents: BV1B/U valve, CV11/U angled adapter, CV7A/U 1-1/4" in-line adapter

Key Features

  • Fits sinks with a 1-1/4" tailpiece, such as many RV bathroom lavatories
  • Waterless self-sealing design replaces a traditional P-trap
  • Helps prevent sewer and gray tank odors from entering the RV
  • No water seal to evaporate, siphon or freeze
  • Installs vertically, or horizontally with the included angled adapter (ribs down, at least 1/8" fall per foot)
  • Hand-tight slip joints, no sealant needed

Have a 1-1/2" tailpiece instead? Order the HepvO BV1B/UB kit. Measure your sink tailpiece before ordering.

HepvO guides

Eligible unused and uninstalled physical products may be returned
within 30 days after delivery.

Regular sale and discounted products are eligible for return.
Only products clearly marked “Final Sale” before purchase are
non-returnable.

Conditions and exclusions apply. See our Return and Refund Policy.

Free standard shipping is available on eligible physical-product orders delivered within the contiguous United States, with no minimum order amount.

Black Series generic replacement parts and products or orders that are oversized, require freight shipping, are special-order, contain hazardous materials, or are delivered to remote or limited-access areas are excluded. Any applicable shipping charge will be displayed at checkout before you submit your order.

In-stock products are generally processed within 1–2 business days. Estimated delivery is approximately 4–12 business days, depending on the product, destination, carrier, and delivery method.

Alaska, Hawaii, U.S. territories, and international destinations are not included in the contiguous United States free-shipping offer. See our Shipping Policy for complete details.

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