Wafer-Type Butterfly Valve -ASTM A536 60-40-18

Nominal Diameter (DN) DN50 ~ DN600 (Optional)
Nominal Pressure (PN) PN10/16 (Class 150), JIS 10K/16K
Temperature Range -20°C to +120°C (EPDM Seat)
-10°C to +180°C (PTFE Seat)
Applicable Media Water, Air, Oil, Weakly Corrosive Liquids
Connection Type Wafer-Type (ASME B16.5 / EN 1092-1/JIS B2220)
Actuation Lever, Gear, Pneumatic, Electric

Description

Wafer-Type Butterfly Valve (Cartridge Seat) – Technical Datasheet

Model: D71X-16C (Example)
Type: Centerline Design, Wafer-Type
Seat Type: Cartridge Replaceable Seat

Basic Parameters

Item	Specification
Nominal Diameter (DN)	DN50 ~ DN600 (Optional)
Nominal Pressure (PN)	PN10/16 (Class 150), JIS 10K/16K
Temperature Range	-20°C to +120°C (EPDM Seat) -10°C to +180°C (PTFE Seat)
Applicable Media	Water, Air, Oil, Weakly Corrosive Liquids
Connection Type	Wafer-Type (ASME B16.5 / EN 1092-1/JIS B2220)
Actuation	Lever, Gear, Pneumatic, Electric

Construction & Materials

Component	Material	Description
Body	Ductile Iron (GGG50) Carbon Steel (WCB) Stainless Steel (CF8/CF8M)	Epoxy Coated/Ni-Plated
Disc	SS304/316 Ductile Iron + Nylon Coating	Centerline Design, Low Flow Loss
Stem	Stainless Steel (416/304/316)	Through-Rod, Anti-Blowout
Seat	Cartridge Seat: – Seal: EPDM/NBR/VITON/PTFE – Support Ring: SS304 + Rubber Composite	Quick Replacement Without Body Removal
Sealing Type	Bidirectional Elastic Sealing	Zero Leakage (ANSI FCI 70-2)

III. Cartridge Seat Features

Modular Design: Seat pre-assembled in stainless steel retainer ring.
Rapid Replacement: Maintenance without pipeline disassembly (valve removed between flanges).
Zero-Leakage Sealing: Uniform compression under pressure fluctuations.
Extrusion Resistance: SS skeleton prevents deformation (10x longer life vs. standard seats).

Performance Specifications

Parameter	Value
Sealing Class	ANSI Class VI / ISO 5208 A
Flow Coefficient (Cv)	Refer to size-specific chart (e.g., DN100: Cv≈500)
Operating Torque	≤30% of standard butterfly valves
Cycles	≥100,000 (EPDM Seat)
Fire-Safe Option	API 607 (Optional)

Design & Testing

Installation: Sandwiched between ANSI/EN flanges (no threaded holes in body).
Shell Test: 1.5×PN (EN 12266).
Seat Test: 1.1×PN (bidirectional air/water).
Vacuum Test: 0.08 MPa (ISO 5208).

Standards & Certifications

Category	Standard
Valve Design	ISO 10631 / EN 593 / MSS SP-67
Flange Face	RF (Raised Face) ASME B16.5 / EN 1092-1
Fire Safety	API 607 (Optional)
Potable Water	WRAS/KTW (EPDM Seat)

VII. Options

Actuation: ISO 5211 mounting pad for pneumatic/electric actuators.
Stem Extension: For insulated lines (-40°C to +230°C).
Position Indicators: Mechanical/electronic limit switches.
Anti-Static Device: ISO 5211 compliance.

VIII. Applications

HVAC: Chilled/heating water systems.
Industrial: Chemical processing, compressed air.
Water Treatment: Filtration, pumping stations.
Marine: Seawater cooling (316SS body).

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.

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