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Product Documentation:

DMV-ZRD 701/602 - Automatic Gas Valve with VLA by Dungs

$1,369.60
Item Code: 231-844V

DMV-ZRD 701/602 With VLA (231-844V)

  • ½”, ¾”, 1” NPT or Rp

120 Vac (+10%/-15%), 50 – 60 Hz, 70 VA

NEMA Type 12

Replacement Coil: 251680 and 232401

Replacement PWB for Stage 1: 238803

 

Description

The DUNGS Two-Stage Dual Modular Valve (DMV-ZRD(LE)/602 with VLA) combines all the

features of the DMV-ZRD(LE) Dual Modular Valve with a factory installed vent line

connection between the two automatic shutoff valves.

For main gas lines:

  • Up to 1 1/2”; vent line must be 3/4”
  • 2”; vent line must be 1”

Application

The DUNGS DMV-ZRD is recommended for industrial and commercial heating applications

where two safety shutoff valves in series with a vent line connection between the safety

shutoff valves that modulate between two firing rates are required. The DMV-ZRD/6 Dual

Multi-Valve two stage is suitable for natural gas, propane, butane, air and other inert gases.

Optional Approvals

When ordered and installed with Burkert connector plug (part number 253731), the UL

Recognized DMV valve may replace a UL Listed valve. Such a substitution is typically

required for equipment UL Listed to UL 295/UL 795.

 

Specifications

Body Size                            Pipe Size

DMV-ZRD(LE) 701/602                    1/2” – 1” NPT or Rp

DMV-ZRD(LE) 702/602                    1” – 2” NPT or Rp

DMV-ZRD(LE) 703/602                    1” – 2” NPT or Rp

Max Operating Pressure

7 PSI (500 mbar) CE (Class A)

5 PSI (360 mbar) CSA

Electrical Ratings (+10%/-15)

110 - 120 Vac 50-60 Hz

220 - 240 Vac 50-60 Hz

Enclosure Rating

NEMA Type 12

Electrical Connection Stage 1 (V1 & V2)

DIN-Connector with ½” NPT conduit adapter

Electrical Connection Stage 2 (V2)

Screw terminals with ½” NPT conduit connection

Operating Time

100% Duty Cycle

Ambient Temperature Rating

-20 F to +150 F (-30 C to +65 C) 

Aluminum body; Inlet, intermediate and outlet side taps (G1/8 ISO 228); Inlet gas strainer installed in the housing upstream valves (23 mesh screen); Valve 1(V1) of the DMV-ZRD and DMV-ZRDLE series is fast opening and fast closing. Valve 2 (V2) is a two stage valve. V2 of the DMVZRD is fast opening, while V2 of the DMV-ZRDLE is slow-opening for smoother light-off. Max. flow adjustment on V2 provides variable main flow on both models; Refer to Flow Curves for Body Selection. Conduit Adapter (240671), DIN connector (210319), and flanges must be ordered and priced separately. Code requirements vary. FM requires visual indication on 1" and larger safety valves. Two visual indicators, (VI) 266949 or one CPI 400 (CPI) 266968, and one VI meet this requirement. These also must be ordered separately.