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DBV-WF/LU SERIES

Product catalog summary

Introduction
Dorot offers a high-quality line of butterfly valves, the DBV-WF/LU series, designed for durability, reliability, and ease of maintenance. These valves are suitable for various applications, including pumping stations, irrigation, municipal water networks, and industrial water supply.

Design Features
The DBV-WF/LU series includes wafer (WF) and lug (LU) style valves. They are compatible with international flange standards, allowing for global use. The modular design facilitates easy installation of manual levers or gear operators without additional brackets.

Product Advantages

Wafer or Lug-style installation between flanges.
Sealed stem and gear for longevity.
Low torque operation due to low-friction stem bushing.
Long neck for easy activation in confined spaces.
Square stem for easy assembly with actuators.

Specifications

Epoxy-coated ductile iron bodies.
Mechanically-retained stem, not exposed to pipeline media.
Spherically-machined, hand-polished disc for excellent sealing.
Non-corrosive bearings and bi-directional flow.
Pressure ratings: 230psi for 2”-12” valves, 150psi for 14”-20” valves.

Installation and Maintenance
Installation involves positioning the disc partially open, aligning the valve body between flanges, and tightening bolts. Maintenance is minimal, with field-replaceable components and no routine lubrication required.

Material Selection

Body: Ductile iron ASTM A536.
Seal: EPDM or Buna-N.
Stem: 410SS or 316SS.
Disc: Electro-ferritic coated ductile iron, aluminum bronze, or 316 SS.

Operating Temperature Range

EPDM: -40ºF to +250ºF.
BUNA-N: 0ºF to +212ºF.

Valve Actuators

Gear actuator.
Hand lever.
Pneumatic actuators.

Ordering Guide
Example: DBV-LG-4-ANSI cl.150-D-N-S4-SS-G, indicating a lug type, 100mm size, ANSI150 flanges, DI body, Buna-N seal, SST410 stem, SST316 disc, gear-actuated.

Catalog excerpts

DBV-WF/LU SERIES

Open the catalog to page 1

DBV-WF/LU SERIES 2”- 24” (50mm-600mm) Dorot is proud to offer a high quality line of butterfly valves to meet the requirements of today’s market. Combining years of field experience, research and development, Dorot has added numerous unique features to the Series DBV- WF/ LU. The results are longer service life, greater reliability, ease of parts replacement and interchangeability of components. Design Features Dorot’s Series DBV: WF (Wafer) valve or a version with threaded bores- the LU valve. Flange-locating Lug version can be used for deadend service. All Dorot valves are tested to 110% of...

Open the catalog to page 2

Installation 1. Locate the disc in a partially- open position. 2. Place the valve body between the pipe flanges and install flange bolts. Do not use flange gaskets. 3. Carefully open the disc to the fully-open position, ensure proper alignment with the adjacent pipes. 4. Leave disc in the fully-open position and tighten flange bolts per required specifications. Once bolts are tightened, then carefully move the disc to “closed” position. 5. Horizontal position of the stem is preferred. Maintenance and Repair The high performance features minimize wear and maintenance requirements. No routine lubrication...

Open the catalog to page 4

Components No. Qty Description 1 1 Thrust Washer 2 1 Retaining Ring 3 2 O-Ring 4 3 Bearings 5 1 O-Ring 6 1 Disc 7 1 Stem 8 1 Seal 9 1 Body Material selection BODY • D - Ductile iron ASTM A536 (standard) SEAL • E - EPDM (standard) • N - Buna-N STEM • S4 - 410SS ASTM A582 Type 410 (standard) • S3 - 316SS ASTM A276 Type 316 DISC • DI - Electro- feritic Coated Ductile Iron ASTM A536 (standard) • AL - Aluminum Bronze ASTM B148-954 • SS - 316 SS ASTM A351 CF8M Operating Temperature Range of Seals Type Minimum Maximum EPDM -40ºF (-40ºC) +250ºF (121ºC) BUNA-N 0ºF (-18ºC) +212ºF (100ºC) Valve Actuators...

Open the catalog to page 5

DBV-WF/LU / 23.01.08 w w w . d o r o t . c o m • E - m a i l : i n f o _ d @ d o r o t . c o m DOROT AUTOMATIC CONTROL VALVES Founded in 1946, DOROT is a leading developer, manufacturer and marketer of a wide range of superior quality automatic control valves. DOROT’s experienced Research & Development Dept. has a long tradition of generating innovative solutions for the application of water control systems. These include, waterworks distribution networks, sewage and effluent disposal, fire protection, mining and irrigation systems. DOROT’s commitment to excellence begins with using the highest...

Open the catalog to page 6

DBV-WF/LU SERIES

DBV-WF/LU SERIES

Catalog excerpts

All Dorot Control Valves catalogs and technical brochures