Gas Pressure Regulator with Built-in Solenoid Valve VAD

The VAD pressure regulator, the air/gas ratio control VAG, and variable air/gas ratio control VAV use servo technology to shut off and precisely control the gas supply to gas burners and gas appliances. They are for use in gas control and safety systems in all sectors of the iron, steel, glass, and ceramics industries, also in domestic or commercial heat generation, such as packaging, paper, and food industries.

The VAD constant pressure governor, Class A, with high control accuracy, is for excess air burners, atmospheric burners, or single-stage forced air burners. Pressure preset via setpoint spring.

Features

• All-purpose servo regulator for gaseous media with integrated safety valve
• Suitable for a max. inlet pressure of 500 mbar (500 hPa/7 psig)
• Minimum installation effort: no external impulse line required
• Check indication by blue LED
• Setting options from two sides
• EC type-tested and certified
• FM and CSA approved
• AGA approved
• Part of the Valvario series
• UL listed

	Documentation Manufacturer's Product Brochure Manufacturer's Operating Instructions Manufacturer's Technical Sheet
	Ordering Information Model Connection Mains Voltage Outlet Pressure Valve Seat Price (US List) Order Now VAD 1T15N/NQ-100B ½" NPT internal thread 120 V AC; 50/60 Hz 10 – 100 mbar reduced $323 VAD 1T20N/NQ-100A ¾" NPT internal thread 120 V AC; 50/60 Hz 10 – 100 mbar standard $341 VAD 1T25N/NQ-100A 1" NPT internal thread 120 V AC; 50/60 Hz 10 – 100 mbar standard $346 VAD 2T40N/NQ-100A 1½" NPT internal thread 120 V AC; 50/60 Hz 10 – 100 mbar standard $480 VAD 3T50N/NQ-100A 2" NPT internal thread 120 V AC; 50/60 Hz 10 – 100 mbar standard $654 For all other configurations Contact Combustion 911
	Applications Click on images for close-up view. Constant pressure control The pressure regulator with gas solenoid valve VAD maintains the set gas outlet pressure pG constant when subject to differing flow rates. If a second gas solenoid valve is used upstream of the VAD, this complies with the requirements of EN 746-2 for two Class A gas solenoid valves connected in series. Constant pressure control with two gas solenoid valves The pressure regulator with gas solenoid valve VAD maintains the set gas outlet pressure pG constant when subject to differing flow rates. Constant pressure control with max. pressure switch In this example, the minimum inlet pressure pe and the maximum outlet pressure pG are monitored with the pressure switches DG..C. The simple attachment of the pressure switch module makes installation easier. Constant pressure control with noncontrolled pilot gas outlet In this application, the pilot burner is supplied with a high inlet pressure via the pilot gas outlet. The simple attachment of the bypass valve module makes installation easier. The minimum inlet pressure pe and the maximum outlet pressure pG are monitored with the pressure switches DG..C.
	Specifications General Types of Gas: natural gas, town gas, LPG (gaseous), biologically produced methane (max. 0.1 %-by-vol. H2S); other gases on request. The gas must be dry in all temperature conditions and must not contain condensate. Inlet pressure range pe: 10 – 500 mbar (10 – 500 hPa/4 – 200 "WC), FM approved (230 V AC, 120 V AC, 24 V DC), non operational pressure: 700 mbar (700 hPa/10 psig). CSA approved (230 V AC, 120 V AC, 24 V DC) up to 350 mbar (350 hPa/5 psig). Opening time of the solenoid valve: quick opening: ≤ 0.5 s. Closing time: quick closing: < 1 s. Ambient temperature: -20 to +60°C (-4 to +140°F), no condensation permitted. Storage temperature: -20 to +40°C (-4 to 104°F), no condensation permitted. Safety valve: Class A to EN 161, Factory Mutual (FM) Research Class: 410 and 7411 Control range: up to 10:1. Mains voltage: 230 V AC, +10/-15%, 50/60 Hz; 200 V AC, +10/-15%, 50/60 Hz; 120 V AC, +10/-15%, 50/60 Hz; 100 V AC, +10/-15%, 50/60 Hz; 24 V DC, ±20%. Cable gland: M20 x 1.5 Electrical connection: electrical cable with max. 2.5 mm2 (AWG 12) or plug with socket to EN 175301-803. Enclosure: IP 65. Duty cycle: 100%. Power factor of the solenoid coil: cos φ = 1. Power consumption: Type 24 V DC (W) 100 V AC (W) 120 V AC (W) 200 V AC (W) 230 V AC (W) Size 1 29 33 30 33 30 Size 2 46 53 54 54 53 Size 3 46 53 54 54 53 Valve housing: aluminium Valve seal: NBR Connection flanges with internal thread: Rp to ISO 7-1, NPT to ANSI/ASME. Position indicator contact rating: Type Voltage Min. current (resistive load) Max. current (resistive load) VAx..S, VCx..S 12 – 250 V AC, 50/60 Hz 100 mA 3 A VAx..G, VCx..G 12 – 125 V AC, 50/60 Hz 2 mA 0.1 A Position indicator switching frequency: max. 5× per minute Switching current [A] Switching cycles* cos φ = 1 cos φ = 0.6 0.1 500,000 500,000 0.5 300,000 250,000 1 200,000 100,000 3 100,000 -- * Limited to max. 200,000 cycles for heating systems. Outlet pressure pG: 2.5 – 25 mbar (2.5 – 25 hPa/1 – 10 "WC) 5.0 – 50 mbar (5.0 – 50 hPa/2 – 20 "WC) 10 – 100 mbar (10 – 100 hPa/4 – 40 "WC)