Monoflange Wafer Type Butterfly Valves

Description

TECHNICAL DATA SHEET

Monoflange Type Wafer Butterfly Valve

1. BASIC VALVE INFORMATION

2. DESIGN STANDARDS & SPECIFICATIONS

3. MAIN TECHNICAL PARAMETERS

4. MAIN COMPONENTS MATERIALS

5. STRUCTURAL CHARACTERISTICS & TECHNICAL REQUIREMENTS

1. Connection Type: Monoflange wafer construction. The valve body has an integral cast flange at the center (monoflange) with bolt holes; both ends are wafer-type sealing faces without flanges.
2. Installation Method:
• Valve is sandwiched between two pipeline flanges, tightened by through-bolts connecting both side flanges.
• Monoflange function: Can be used as support flange fixed to a bracket, as anchor flange to prevent axial movement, or for connection to auxiliary piping/support structure.
• Bolts pass through monoflange and pipeline flanges for overall tightening.
3. Sealing Structure: Concentric soft seal design, disc interference fit with rubber seat achieving zero leakage. Seat adopts fully vulcanized process.
4. Disc Material Advantage: Stainless steel disc, corrosion resistant, prevents sticking due to rust.
5. Operation Type: Worm gear operation (standard for D371X model):
• Worm gear transmission, labor-saving operation
• Self-locking function, can be positioned at any angle
• Handwheel clockwise close, counterclockwise open, with position indicator
• Worm gear box IP65 protection rating
6. Face-to-Face Dimension: According to GB/T 12221 Series 16 short pattern.
7. Monoflange Load Capacity: The monoflange can bear certain pipeline weight or serve as anchoring point. Suitable for applications requiring intermediate pipe support or anti-vibration fixing.

6. DIMENSIONS & CONNECTION SIZES (Unit: mm)

Note: Reference dimensions for PN16 rating. Monoflange located at body center.

7. OTHER REQUIREMENTS

1. Coating:
• Body (ductile iron) exterior: Epoxy anti-rust paint, film thickness ≥150μm, color: blue (or as per user request).
• Monoflange sealing surface to be protected from painting.
• Stainless steel disc: No coating, natural metal finish.
2. Protection & Storage:
• Valve ends protected with plastic caps.
• Worm gear box with waterproof packaging.
• Monoflange can be used as lifting point, ensure balanced lifting.
3. Nameplate: Fixed on worm gear box or body, indicating: Manufacturer, Model D371X (Monoflange Type), Nominal Diameter, Nominal Pressure, Operating Temperature, Body/Disc/Seat Materials, Manufacturing No. and Date.
4. Warranty: 12 months after commissioning or 18 months after delivery.
5. Monoflange Load Capacity: This valve’s monoflange is designed for intermediate support and anchoring. Maximum allowable load depends on pipe size and operating conditions. Please consult manufacturer for specific load ratings.

8. REMARKS

• Please select below:
• □ Seat Material: EPDM (Ethylene Propylene Rubber, temp. -10~+80℃, resistant to hot water, aging resistant)
• □ Seat Material: NBR (Nitrile Rubber, temp. -10~+120℃, good oil resistance)
• Monoflange bolt holes: Through holes (standard configuration)
• Matters not covered in this sheet shall be according to technical agreement signed by both parties and GB/T 12238 standard.
• If monoflange to be used as main anchoring point, please provide pipeline weight, support spacing, and any vibration/dynamic load parameters for strength verification.

This technical data sheet accurately describes the Monoflange Type Wafer Butterfly Valve:

•  Integral monoflange at valve body center
•  Both ends wafer type connection
•  Model: D371X (Monoflange Type)
•  Materials: Ductile Iron Body, Stainless Steel Disc, Rubber Seat
•  Operation: Worm Gear

The monoflange provides intermediate support and anchoring capability, ideal for pipeline systems requiring additional stability or vibration control.

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.