VG Series VGG and VGD Gas Valves for use with SKP Electro-hydraulic Actuators Technical Instructions Document No. 155-51P5 VG August 1, 01 VGG VGD0 VGD0 Description Only when assembled to Series SKP actuators The normally closed VG Series of modular single and double-body gas valves combined with SKP Series electro-hydraulic actuators provide safety shut-off, gas pressure regulation and air/gas ratio control for commercial and industrial gas burners. Table 1. Legend. Model Numbers Body Style Connection VGG Single NPT Threaded VGD Double NPT Threaded or ANSI Flanged Features All Models VGG Models UL listed, FM approved, CSA certified, IRI approvable, ISO 9001 and 1000 certified. European, Australian and Japanese approved versions available. Stainless steel mesh inlet filter protects the valve seat(s) as well as downstream components. 1/-inch NPT pressure taps on the inlet and outlet. (See Table for details). Dual stem guides ensure precise disc alignment and tight shut-off. Contoured valve disc provides smooth release of gas and stable regulating control. /-inch NPT port for pilot or vent line connection on -1/ and -inch VGG valves.
Technical Instructions Document Number 155-51P5 August 1, 01 VG Series Gas Valves for Use with Electro-hydraulic Actuators SKP VGD0 Models Compact VGD0 double-valve bodies consist of two safety shut-off valves in series. The first (inlet) valve has a flat valve disc applicable for safety shut-off function only. The second (outlet) valve has a contoured valve disc for use with pressure regulating actuators (SKP, SKP5, SKP ). A 1-inch NPT vent connection between the valves. Each VGD0 double-valve requires two threaded mounting flanges (AGAxxU). Each flange includes the necessary installation hardware (bolts, nuts and O-ring). Each mounting flange has a 1/-inch NPT pressure tap. The flanges can be pre-mounted onto the pipe, and then bolted onto the VGD0 gas valve body. This feature eliminates the use of pipe unions and permits the gas valve assembly to be easily removed from a gas train. The overall dimensions of both the 1-1/-inch and -inch AGAxxU flanges are identical. This permits a 1-1/-inch flange to be mounted on a -inch valve body or vice versa. NOTE: VGD0 valves and AGAxxU threaded flanges must be ordered as separate items (See Table ). VGD0 Models Application Compact VGD0 double-valve bodies consist of two safety shut-off valves in series. Each individual safety shut-off valve has double seats to achieve high flow. Patented seat construction with individual closing spring for each seat to assure reliable shutoff and high close-off pressure rating. Full port vent line connection plates are available. NOTE: VGD0 valves and AGA vent connection plates must be ordered as separate items (See Table ). All VG valves can be combined with any SKP Series actuator. The actuator can be mounted while the valve is installed and under pressure. SKP regulating actuators are applicable for both low and high supply gas pressure applications, eliminating excessive regulator inventories. Maximum pressure ratings vary with valve size (See Table ). All VG valves perform these functions in combination with each of the following actuators: SKP15 SKP5 SKP55 SKP5 Safety shut-off Safety shut-off and constant pressure regulation or zero governor. Safety shut-off, pressure regulation and differential pressure air/gas ratio control. Safety shut-off, pressure regulation and adjustable air/gas ratio control. Since more than one function can be performed by a single valve, fewer components and fittings are required to assemble a gas train - significantly reducing both the size and weight of the gas train. In addition, smaller diameter gas valves can be used. For details on valve sizing see the Flow Charts (Figures 5 and 6). CAUTION: Ordering Information Do not oversize valves equipped with a regulating SKP actuator. Oversizing may limit turndown and could cause oscillations. Gas valves and actuators are ordered separately. For additional SKP actuator information, see the following Technical Instructions: SKP15 155-51P5 SKP5 155-5P5 SKP55 155-5P5 SKP5 155-5P5 Page
VG Series Gas Valves for Use with Electro-hydraulic Technical Instructions Actuators SKP Document Number 155-51P5 August 1, 01 Accessories Manual adjusting throttle attachment AGA61 permits VG series valves to be used as adjustable limiting orifice valves. Once adjusted, the AGA61 has a provision to be sealed from tampering (See Table ). Adapter plate AGA60 permits VG series valves to be used for modulating flow control when fitted with an SQX series modulating actuator (See Table ). NOTE: The VG /SQX valve/actuator combination is designed strictly for modulating flow control and does not provide safety shut-off function. Product Number Product Number (with stroke limiter) Size Table. Product Numbers. Maximum Operating Pressure psi Closeoff Pressure psi Capacity CFH Natural Gas at P=1" W.C. Number of Test Points, 1/" NPT Inlet Outlet Valve Body Material VGG10.15U VGG10.151U 1/" NPT 0 5 / Aluminum VGG10.0U VGG10.01U /" NPT 0 5 61/ Aluminum VGG10.5U VGG10.51U 1" NPT 0 5 91/686 Aluminum VGG10.0U VGG10.01U 1-1/" 0 5,0/1,6 Aluminum NPT VGG10.50U VGG10.501U " NPT 15 5,511 Aluminum VGG10.65U VGG10.651U -1/" NPT 10 5 5,085 1 1 Cast Iron VGG10.80U VGG10.801U " NPT 10 5 6,158 1 1 Cast Iron *VGD0.0U 1-1/" 0 0 1,890 Two 1/-inch and Aluminum *VGD0.50U " 15 0,00 one 1-inch port between valves Aluminum *AGA1U Single 1-1/" connecting flange with 1/-inch port for VGD 0.0U Two () needed per *AGA51U Single " connecting flange with 1/-inch port for VGD 0.50U valve. Order separately VGD0.065U -1/" NPT 10 5,880 1 1 Aluminum VGD0.080U " NPT 10 5 5,0 1 1 Aluminum VGD0.U " Flanged 10 0 9,680 1 1 Aluminum VGD0.150U 6" Flanged 10 0 1,90 1 1 Aluminum * VGD0 double valves require AGAxxU threaded flanges for installation. VGG valves, 1/- through 1-1/ inch have reduced flow when used with AGA66 (NEMA kit). Capacities shown are without/with NEMA kit (See Figure a). Page
Technical Instructions Document Number 155-51P5 August 1, 01 VG Series Gas Valves for Use with Electro-hydraulic Actuators SKP Table. Accessories. Part Number Description Notes AGA0.6580U Vent connection plate with 1-1/" NPT vent connection and 1/" NPT test port Order separately. AGA0.0U Vent connection plate with " NPT vent connection and 1/" NPT test port For use with VGD0 only. AGA0.0150U Vent connection plate with -1/" NPT vent connection and 1/" NPT test port AGA60 AGA61 AGA66 Adapter for use with SQX actuators Manual operation kit, allows VG valves to be used as adjustable limiting orifice valve. Sealing gasket to provide NEMA, NEMA R, and NEMA protection. Specifications Approvals Operating Environment Physical Characteristics Agency approvals/standards UL/9, FM/00, CSA/AINSI Z1.1/CGA 6.5 Commercial/Industrial IRI approvable Agency marks apply only for VGxxx.xxxU series gas valve bodies assembled with SKPxx.xxxU actuators. Maximum operating pressure See Table Maximum back pressure (differential).5 psi (150 mbar) Close-off pressure See Table Permissible gases Natural gas, propane, butane, air, and other noncorrosive gases. Permissible gas temperature 5 F to 10 F (-15 C to 60 C) Permissible operating temperature 5 F to 10 F (-15 C to 60 C) Mounting Any position except upside down Body materials See Table Weight See Tables through Connections Pipe connections NPT or ANSI Class 150 flange (See Table ) Pressure and vent taps See Table Operation All VG gas valves are normally closed, two-way valves. The valves have a standard, integral, stainless steel mesh filter (0.8 mm) in the inlet to protect the downstream components against contamination. VGG series gas valves have a contoured valve disc for stable regulating control and smooth release of gas (see Figure 1). VGG10.xx1U series gas valves have a stroke limiter. VGD0 double valves consist of two valves in series. The first (inlet) valve has a flat valve disc suitable for the safety shut-off function only. The second (outlet) valve has a contoured valve disc for stable regulating control and smooth release of gas (see Figure ). VGD0 double valves consist of two valves in series. Each valve has a double seat to achieve high flow (see Figure ). All valves have 1/-inch NPT ports for pressure test connection. The -1/-inch and -inch VGG valves have an additional /-inch NPT port for a pilot connection. The VGD0 valves have a 1- inch NPT port for a vent line connection. The VGD0 valves can be equipped with a full size vent connection plate. See Table 1 for details on ports and vent connection plates. Page
VG Series Gas Valves for Use with Electro-hydraulic Technical Instructions Actuators SKP Document Number 155-51P5 August 1, 01 Operation, Continued Figure 1. VGG Models. Figure. VGD0 Models. Figure. VGD0 Models. Page 5
Technical Instructions Document Number 155-51P5 September 1, 005 VG Series Gas Valves for Use with Electro-hydraulic Actuators SKP Gas Flow Charts VGG " W.C. mbar 1/" /" 1" 1-1/" " -1/" " 1,000 00 500 00 00 00 0 50 0 0 0 10 5 1 0. 0.5 0. 0. 0.,000 1,000 00 500 00 00 00 0 50 0 0 0 10 5 1 0. 0.5 0. Sp. Gr. GAS0058R1 5 0 5 00 5 000 5 0 5 0 5 0 5 10 5 5 00 5 00 5 00 5 000 5 000 5 000 5 0 5 cf/h 1 Natural Gas 0.6 cf/h Propane Gas 1.5 cf/h Butane Gas.00 cf/h Air m /h Air 1.00 1.00 Figure. Sizing Single Valves Without NEMA Kit. NOTE: Pressure drop is for one valve when using an SKPx5 actuator without a NEMA kit (AGA66). CAUTION: Do not oversize valves equipped with regulating actuators SKP, SKP5 or SKP Oversizing may limit turndown and could cause oscillations. Page 6
VG Series Gas Valves for Use with Electro-hydraulic Technical Instructions Actuators SKP Document Number 155-51P5 September 1, 005 Gas Flow Charts, Continued VGG " W.C. mbar 1/" /" 1" 1-1/" " -1/" " 1,000 00 500 00 00 00 0 50 0 0 0 10 5 1 0. 0.5 0. 0. 0.,000 1,000 00 500 00 00 00 0 50 0 0 0 10 5 1 0. 0.5 0. Sp. Gr. GAS0059R1 5 0 5 00 5 000 5 0 5 0 5 0 5 10 5 5 00 5 00 5 00 5 000 5 000 5 000 5 0 5 cf/h 1 Natural Gas 0.6 cf/h Propane Gas 1.5 cf/h Butane Gas.00 cf/h Air m /h Air 1.00 1.00 Figure a. Sizing Single Valves With a NEMA Kit. NOTE: Pressure drop is for one valve when using an SKPx5 actuator and a NEMA kit (AGA66). CAUTION: Do not oversize valves equipped with regulating actuators SKP, SKP5 or SKP Oversizing may limit turndown and could cause oscillations. Page
Technical Instructions Document Number 155-51P5 September 1, 005 VG Series Gas Valves for Use with Electro-hydraulic Actuators SKP Gas Flow Charts, Continued " W.C. mbar 1-1/" " -1/" " " 6" 1,000 00 500 00 00 00 0 50 0 0 0 10 5 1 0. 0.5 0. 0. 0.,000 1,000 00 500 00 00 00 0 50 0 0 0 10 5 1 0. 0.5 0. PRESSURE DROP Δ p Sp. Gr. GAS000R1 5 0 5 00 5 000 5 0 5 0 5 0 5 10 5 5 00 5 00 5 00 5 000 5 000 5 000 5 0 5 cf/h 1 Natural Gas 0.6 cf/h Propane Gas 1.5 cf/h Butane Gas.00 cf/h Air m /h Air 1.00 1.00 Figure 5. Sizing Double Valves. NOTE: Pressure drop is total drop across both valves when using an SKPx5 actuator, with or without an AGA66. CAUTION: Do not oversize valves equipped with regulating actuators SKP, SKP5 or SKP Oversizing may limit turndown and could cause oscillations. Page 8
VG Series Gas Valves for Use with Electro-hydraulic Technical Instructions Actuators SKP Document Number 155-51P5 August 1, 01 Dimensions Table. VGG Models. Valve Model Nominal Size D A (mm) VGG 1/ 1-1/ () / 1-1/ () 1 1-1/ () 1-1/ 1-5/8 (1) (50) -1/ -5/8 (9) -15/16 () B (mm) -1/8 (9) -1/8 (9) -18 (9) (10) -1/ (10) 6-/16 (16) 6-/16 (16) E (mm) 1-1/8 (8) 1-1/8 (8) 1-1/8 (8) 1-5/16 () 1-5/16 () F (mm) 1-/ (1) 1-/ (1) 1-/ (1) 1-5/16 () 1-5/16) () -/16 (6) -/16 (6) K (mm) -/16 (55) -/16 (55) -/16 (55) (5) -/8 (85) 5-11/16 (15) 6-1/16 (155) L (mm) -/8 (110) -/8 (110) -/8 (110) 5-15/16 (150) 6-/ (10) 11-/16 (90) 1-/16 (10) Weight Pounds (kg) 1.65 (0.5) 1.65 (0.5) 1.5 (0.). (1.5).0 (1.8).5 (1.8) (15.5) Page 9
Technical Instructions Document Number 155-51P5 August 1, 01 VG Series Gas Valves for Use with Electro-hydraulic Actuators SKP Dimensions, Continued Valve Model Nominal Size D Table 5. VGD0 Models. L (mm) VGD0 1-1/ 1-/16 (10) 1-5/8 (0) Weight Pounds (kg) (.) 6 (.15) Page 10
VG Series Gas Valves for Use with Electro-hydraulic Technical Instructions Actuators SKP Document Number 155-51P5 August 1, 01 Dimensions, Continued Dimensions in (mm) Table 6. VGD0 Models. Valve Model A B C D E F G H I J K * L M S T VGD0.065U 1.09 (0).00 (0).5 (8) VGD0.080U 1.8 8.9.6 () () (9) VGD0.U 1.8 10.50. (50) (6) (110) VGD0.150U 18.90 1.9 5.1 (80) (8) (15) * Spanner width in millimeters.6 (118) 5.18 (1) 5.0 (15).0 (188).09 (5) 1.85 () 1.9 (9).09 (5) 1.6 () 0.9 (0) 1.95 (50).0 (59).0 (10).1 (10) 5.16 (11) 6.61 (168) 6.1 (156) 6.0 (160).56 (19) 10.1 (6) Page 11 1.5 (0) 1.85 () 0.6 (16) 0.6 (16) -1/" NPT SW 1. (5) " SW. NPT 10 (60) d=.50 d=0.5. (191) d=9.9 (1) (19) d=0.91 () (60).5 (90). (6).8 ().55 (116) 5.61 (1)
Technical Instructions Document Number 155-51P5 August 1, 01 VG Series Gas Valves for Use with Electro-hydraulic Actuators SKP Dimensions, Continued Table. VGD0 Dimensions in (Millimeters). Valve Model N O P Q R Weight Pounds (kg) VGD0.065U.1 (181).06 (10) 5. (16).0 () 1.6 () 16 () VGD0.080U.8 (185).1 (105) 5.9 (10).1 (81) 0.9 (0) 19 (8) VGD0.U 8.5 (1).6 (11) 6.6 (159).9 () 1.95 (50) 9 (1) VGD0.150U 11.0 (8) 6.1 (156).80 (198) 5. (19).0 (59) 5 () Table 8. Vent Connection Plate Dimensions. VGD0.065U VGD0.080U VGD0.U VGD0.150U Thread Vent Connection Size AGA0.6580U X X 1-1/" NPT AGA0.0U X " NPT AGA0.0150U X -1/" NPT Information in this publication is based on current specifications. The company reserves the right to make changes in specifications and models as design improvements are introduced. Other product or company names mentioned herein may be the trademarks of their respective owners. 005 0 Deerfield Parkway Buffalo Grove, IL 60089-51 U.S.A. Your feedback is important to us. If you have comments about this document, please send them to techsupport@scccombustion.com Document No. 155-51P5 Country of Origin: US Page 1