Burried Coal Tar Coated U section High Performance Butterfly Valve 60″

Valve Type Double Eccentric Butterfly Valve (High Performance)
Application Buried Service / Underground Installation
Size 60 inches (DN 1500)
Pressure Rating Class 150LB (200psi)
Connection Type Flanged Ends (ASME B16.47 Series A or B as required)
Operation Electric Actuator with Extended Stem for buried service

Description

Technical Data Sheet

Buried Butterfly Valve – Double Eccentric – Electric Actuator

Product Name: Buried Double Eccentric Butterfly Valve

General Information

Item	Specification
Valve Type	Double Eccentric Butterfly Valve (High Performance)
Application	Buried Service / Underground Installation
Size	60 inches (DN 1500)
Pressure Rating	Class 150LB (200psi)
Connection Type	Flanged Ends (ASME B16.47 Series A or B as required)
Operation	Electric Actuator with Extended Stem for buried service

Design Standards & Specifications

Item	Standard
Design & Manufacturing	API 609 (Category B), ASME B16.34
Face-to-Face Dimensions	API 609, ASME B16.10
Flange Dimensions	ASME B16.47 (Series A / MSS SP-44 or Series B / API 605)
Pressure Testing	API 598
Coating Standard (Buried)	GB/T 17459 or AWWA C210 (Coal Tar Epoxy)
Actuator Mounting	ISO 5211

Main Component Materials

Part Name	Material Specification
Body	Ductile Iron ASTM A536, 60-40-18 / GGG40
Disc	Ductile Iron / Stainless Steel (Optional)
Seat (Seal)	EPDM (Ethylene Propylene Diene Monomer) – Suitable for Water/Wastewater
Shaft / Stem	Stainless Steel 410 / 17-4PH (Extended Stem for burial)
Bushings	Self-Lubricating Bronze / PTFE Lined
Body O-Rings	Buna-N / EPDM
Boltwork	ASTM A193 B7 / A194 2H (Zinc Plated)
External Coating	Coal Tar Epoxy (Thick coating for buried service)

Technical Parameters & Dimensions (Reference)

Coating Specification:

Standard: Coal Tar Epoxy conforming to AWWA C210 or GB/T 17459 .
Color: Black
Dry Film Thickness: > 300 Microns (or as required for buried service)
Feature: High electrical resistance, anti-corrosive, and resistant to soil chemicals.

Valve Dimensions (Approximate values for 60″ / DN1500):

Dimension	Value (Approx.)	Notes
Face-to-Face (L)	600 mm – 800 mm	Dependent on API 609 Cat. B design
Flange O/D (D)	1380 mm – 1480 mm	ASME B16.47 Series A
Bolt Circle (D1)	1330 mm – 1430 mm	Dependent on flange standard
Number of Bolt Holes	48 – 56	/
Valve Height (w/o operator)	Custom	Dependent on extended stem length
Extended Stem Length	As per burial depth	Typically 2m, 3m, or as specified

Electric Actuator Specifications

Item	Requirement
Actuator Type	Heavy-duty Electric, Quarter-turn (90°)
Power Supply	380V AC / 50Hz / 3-Phase (or as specified)
Torque	≥ 1.5 x Required Valve Break Torque
Protection Class	IP68 (Watertight for buried applications)
Duty Cycle	S2 / S4 (Intermittent)
Motor Insulation	Class H / F
Manual Override	Handwheel with declutch mechanism
Limit Switch	Fully adjustable (Open/Close)
Control Type	On-Off / Modulating (4-20mA) as required

Testing

Shell Test: 1.5 x Rated Pressure
Seat Test: 1.1 x Rated Pressure (Bi-directional)
Leakage Rate: Zero Leakage (API 598)

Technical Notes:

Double Eccentric Design: The shaft is offset from both the centerline of the disc and the body, reducing seat wear during operation.
Extended Stem: Allows the actuator to be positioned above ground while the valve body remains buried. The stem extension is sealed to prevent ingress of moisture and soil.
Buried Coating: The coal tar epoxy provides a durable barrier against galvanic corrosion and soil stress .

GUATANTEE:

SAVVY VALVES is committed to delivering exceptional product quality and worry-free after-sales service. Our valves are guaranteed to provide a minimum service life of 12 months, during which we will supply all necessary spare parts and detailed maintenance instructions free of charge. Within the warranty period, if any non-human-induced damage occurs, we will replace components at no cost and provide professional technical support. After the warranty expires, customers only need to pay for the cost of spare parts, while still benefiting from discounted maintenance services. Our goal is to help clients reduce operational costs and enhance production efficiency through reliable quality and comprehensive after-sales support. Whether for technical inquiries or maintenance needs, our expert team will respond promptly to ensure your valve system maintains optimal performance at all times.

HOT SALE PRODUCTS

For over 10 years, we have been a leading supplier of industrial valves for major global projects in water supply, oil & gas, and desalination.

News