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UIndustrial Signal Manual Grooved Butterfly Valve is a specialized control valve designed for fire protection systems, automatic sprinkler systems, and fire hydrant networks. Manufactured from high-strength ductile iron (QT450-10) with a fully EPDM-encapsulated disc, this valve provides bubble-tight shut-off and bidirectional sealing with zero leakage. The integrated signal feedback device converts the valve’s open/closed status into electrical signals (DC24V/3A), enabling real-time monitoring from the fire control center to prevent accidental valve closure that could compromise system safety. Available in sizes from DN50 to DN1200 (2″ to 48″) with grooved end connections compliant with AWWA-C606 standards, this valve offers fast, tool-free installation — up to 3 times faster than flanged connections. This valve is the trusted choice for fire protection, supply d'acqua, chemical, manghjà, and industrial piping systems requiring both flow control and supervisory signaling.

Grooved Butterfly Valve | Sistema di prutezzione di u focu

Specificazioni tecniche

Grooved Butterfly Valve | Sistema di prutezzione di u focu

Funzioni chjave

1. EPDM Fully Encapsulated Disc – Bubble-Tight Sealing
2. Integrated Signal Feedback – Real-Time Status Monitoring
3. Grooved End Connection – Fast, Installazione Tool-Free
4. Worm Gear Self-Locking Operation – Safe & Reliable
5. Bi-Directional Sealing – Flexible Installation
6. Wide Size Range – DN50 to DN1200
7. Multiple Material Options – Customizable
8. OEM / Supportu di persunalizazione ODM

Working Principle

The signal grooved butterfly valve operates through a simple yet reliable mechanism integrating flow control and status monitoring:

1. Normal Operating State: The valve remains fully open (90°) to ensure unobstructed water flow in the fire protection network. The worm gear self-locking mechanism maintains the valve position, preventing accidental closure due to pressure fluctuations or external impacts.
2. Flow Control Operation: To close the valve for maintenance or isolation, turn the handwheel clockwise. The worm gear drives the disc to rotate 90° to the fully closed position. Reverse rotation opens the valve.
3. Signal Feedback: The valve’s internal cam mechanism activates micro switches at specific positions: fully open (90°) triggers the “Open” signal, fully closed (0°) triggers the “Close” signal. If the valve is closed 25% (1/4 of full opening), the signal device triggers an alarm to the fire control center.
4. Emergency Locking: The handwheel features a locking hole that allows a padlock to secure the valve in position, preventing unauthorized operation.

Grooved Butterfly Valve | Sistema di prutezzione di u focu

Applicazioni

1. Automatic Fire Sprinkler Systems
2. Fire Hydrant Supply Systems
3. Fornitura d'acqua industriale & Drainage
4. Chimica & Petrochemical Plants
5. Alimentazione & Beverage Processing

Imballaggio è spedizione

L'imballu dipende da u tipu è a quantità di u produttu. Options include carton boxes or wooden crates with proper protection for grooved ends and signal device. A spedizione pò esse organizata per mare, ferrovia, aria, o secondu a dumanda di u cliente.

Profilu di a cumpagnia

Luoyang Datang Energy Tech Co., Ltd hè un fornitore di valvule industriale prufessiunale, dedicatu à furnisce soluzioni affidabili di cuntrollu di flussu per a prutezzione di u focu, HVAC, trattamentu di l'acqua, è sistemi di tubazioni industriali in u mondu sanu. All products are manufactured to international standards with CE and ISO 9001 certificazioni. Cù sopra 10 anni di sperienza, un stabilimentu mudernu di 80,000 m², è 200+ impiegati prufessiunali, servemu i clienti in 10+ paesi cù prudutti di qualità, prezzu cumpetitivu, è consegna affidabile.

Termini di pagamentu

T/T, L/C à vista, Western Union, PayPal, Apple Pay, Google Pay, Carta di creditu, ecc.

Grooved Butterfly Valve | Sistema di prutezzione di u focu

FAQ

Q1: What is the difference between a supervised butterfly valve and a standard butterfly valve?

A: Supervised butterfly valves feature a built-in microswitch and signal feedback mechanism that converts the valve’s open/closed status into an electrical signal for transmission to the fire control center. Standard butterfly valves offer only manual flow control. Supervised butterfly valves are critical components in fire protection systems, meeting code requirements for valve status monitoring.

Q2: What are the advantages of grooved connections?

A: Grooved connections eliminate the need for welding, filettatura, or hot work, allowing for rapid installation using just two couplings. Installation is three times faster than flanged connections, requires fewer bolts, and takes up less space. They are particularly suitable for fire protection projects with tight schedules, space constraints, o “no hot work” policies.

Q3: What media and temperatures are EPDM seals suitable for?

A: EPDM (Ethylene Propylene Diene Monomer) seals are suitable for water, clean water, and mild chemicals, with an operating temperature range of -20°C to +80°C. EPDM offers excellent resistance to aging, ozone, and weathering, making it the standard choice for fire protection systems and water treatment applications.

Q4: How does the signal feedback mechanism work?

A: The valve features a built-in cam linked to a microswitch. An “Open” signal is triggered when fully open (90°), and a “Closed” signal is triggered when fully closed (0°). If the valve is inadvertently closed by 25% (one-quarter of its full travel), the signaling device transmits an alarm signal to the fire control center. The output is a DC24V/3A passive switch signal.

Q5: What is the difference between worm gear operation and lever (handle) operation?

A: Worm gear operation utilizes a gear reduction mechanism to provide mechanical advantage, resulting in lower operating torque and easier, smoother handling; it is suitable for large-diameter valves (DN100 and above). The worm gear mechanism includes a self-locking function to prevent accidental valve closure. Lever operation is simpler and more cost-effective, making it suitable for small-diameter valves (DN100 and below).

Grooved Butterfly Valve | Sistema di prutezzione di u focu