Temperature Regulator RT-1004-Al Series Self-Actuated FEATURES
Sales Manual Section 160 PRODUCT SPECIFICATION RT-1004-Al Self-Actuated Temperature Regulator RT-1004-Al Series FEATURES 1. 2. 3. 4. 5. 6. 7. 8. Extra large two-ply, seamless bellows used for greater operating power and closer control. Chevron "Lifetime" stem packing made of Teflon* or EPT Rubber U-Cup for water service. Quick-detach valve stem construction permits easy valve change. Sturdy construction with cast iron frame. Variety of sensing bulb forms and materials. (See page 2). Valves in wide range of sizes, actions, styles, materials, etc. for many services. (see page 3). Capillary selection (see page 2). Setpoint adjustment wheel. *Registered tradename of DuPont Company. GENERAL Without need for external power, Robertshaw Self-Actuated Temperature Regulators (SATR) offer final control of the temperature of a liquid, an air space or flow, or gas flow for domestic, equipment, process, space, etc. on heating or cooling service. The SATR sensing bulb is installed in the medium being controlled while the SATR valve is located on the supply line of the medium used as the heating (steam, hot water) or cooling (water, ethylene glycol, brine) agent. The SATR regulates the heating or cooling medium flow to maintain the desired temperature at the sensing bulb location. Robertshaw SATR are usually cataloged to detail the two-way direct acting (close on temperature rise) type valves for heating service. Two-way reverse-acting (open on temperature rise) and three-way valves are equally available for cooling service. The Robertshaw SATR series offers a selection of: Throttling bands, Temperature Indication, Fail-safe to prevent overheating, Manual Positioning in addition to automatic control, Corrosive atmosphere resistant type, Small overall size and instantaneous heat exchanger service. Most cataloged Robertshaw SATR specifications are starting points from which many alternates to cataloged capillary, sensing bulb, separable well and valve may be FURNISHED TO MEET YOUR SPECIFIC application's needs. 1 Extra power with Narrow Throttling Band HOW TO ORDER 1. Quantity 2. Size 3. Series Number 4. Setpoint and/or setpoint range 5. Capillary specs. 6. Sensing bulb specs. 7. Valve type, action, ends, etc. 8. Other features 9. Shipping & invoicing instructions. RT-1004-Al SERIES The RT-1004-Al series is a non-indicating design suited to heating and cooling applications. The narrow throttling band means that the RT-1004-A1 series is very sensitive to temperature changes at the large sensing bulb. It is particularly applicable where the storage capacity of medium to be heated is great while the heating surface is relatively small. The extra large bellows develops power for more positive action on higher pressure drops on valve sizes above two inches. For cataloging and pricing purposes, the RT-1004-A1 series is detailed with direct-acting valves for heating service, 8 ft. capillary (copper with brass armor), 12B type (threaded bushing) copper sensing bulb, cast iron frame and other non-listed parts of non-ferrous metals. Alternate specifications are available. Valve size, Inches 1/2 3/4 1 1-1/4 1-1/2 2 2-1/2 3 4 Single Seated, Double Seated. Single Seated, Balanced Valve Type, Direct-acting (closes with rising Unbalanced Semi-Balanced temperature at bulb) A MA MA MA MA MA FA FA RA End Connections Screwed Brass Unions Flanged (Class 125 ANSI) Valve Trim (poppet and seats), material S.S. S.S. S.S. S.S. S.S. S.S. S.S. S.S. S.S. Valve Stem (highly finished), material S.S. S.S. S.S. S.S. S.S. S.S. S.S. S.S. S.S. Stem Packing (spring loaded chevrons) Teflon Teflon Teflon Teflon Teflon Teflon Teflon Teflon Teflon Body Material Bronze Bronze Bronze Bronze Bronze Cast Iron Cast Iron Cast Iron Cast Iron Body Rating, Pounds 225 250 250 250 250 175 175 175 175 Pressure Drop Limit, psi (For higher 125 250 250 250 250 100 100 90 70 pressures consult our representative) Full open Cv 2.1 9.5 13.0 18.6 25.0 45.0 82.5 130.0 226.0 The RT-1004 Series is available with any of the setpoint adjustment ranges listed below. The range should be selected so that the setpoint falls within the upper third of the range span. 0° - 35°F 20° - 60°F 45° - 80°F 65° - 105°F 95° - 140°F 110° - 150°F 145° - 190°F 160° - 195°F 185° - 220°F 190° - 225°F Alternates include: Capillary: Length ............................................. 1 ft. to 50 ft. or more Materials .......... Copper tube with brass armor (standard) or 304 stainless steel tube with SS braid Sensing Bulbs: Type 12B .............................................. Copper (standard) Type 12BP ............................................ 316 stainless steel Type 12B or 12BP ............................ with dead extension Type 54 ................Copper, externally finned, plain (54A), Copper, externally finned, bushed (54J), Copper, externally finned, flanged (54K) Type 6 ............................................ Plain for open vessels, Copper with copper tube and brass armor (6A, 316 SS with 304 SS tube and no braid (6AP) Separable Wells (For sensing bulb protection or ease of removal): Material ................................................................ 316 SS Type GA or GA with lagging extension ............................ (Mounting thread one size larger than bulb size) NOTE: Bulb diameter on lagging extension type is l-1/4" maximum. Type GB .......... (Mounting thread same size as bulb size); for bulb sizes up to 1-1/4" diameter. Valves: ................ Types A, FA, MA, MAS, WA, WBI, WD as illustrated. 220° - 255°F 240° - 275°F 255° - 295°F VALVE SIZING Valve sizing is critical to control and life of regulator. Use Robertshaw's "Flo-Rule" Valve Sizing Slide Rule and Cv chart or contact our representative or factory. The application requirement can frequently be satisfied by one or two sizes smaller valve than the supply pipeline size. NOTE 1 - IMPORTANT - If valve seat leakage can cause a problem or a hazard, the following should be taken into account. Maximum leakage of new valves: single-seated Types A, WA - 0.05% of full open valve capacity; single-seated balanced Types MA, MAS - 0.01% of full open valve capacity; Single seated Type WD – 1% of full open valve capacity; double-seated Types FA, WBI 0.5% of full open valve capacity;. This leakage will usually increase somewhat as the valve seats wear in service. NOTE 2 - IMPORTANT - Damage to or failure of the thermal element with loss of charge will ordinarily result in the regulator going to the "cold" position. The stem moves "up" (toward the bellows) - thus a "direct-acting" valve will fully open, a "reverse-acting" valve will close, and a 3-way valve will fully open the bypass port(s). 2 DIMENSIONS, SHIPPING WEIGHTS AND SENSING BULB SIZES Valve Size, 1/2 3/4 1 1-1/4 Inches Direct-Acting A MA MA MA Valve, Type Shipping Wt., Lbs. 35 37 40 45 A 13-5/16 15-3/16 15-3/16 15-3/8 B 11-3/4 11-3/4 11-3/4 11-3/4 D 1-9/16 3-7/16 3-7/16 3-5/8 E 4-3/4 5-15/16 7-1/8 7-1/2 1-1/2 2 2-1/2 3 4 MA MA FA FA FA 8 FT. CATALOGED 50 85 105 130 15-7/8 16-11/16 16-I/2 16-1/2 11-3/4 11-3/4 11-3/4 11-3/4 4-1/8 4-15/16 4-3/4 4-3/4 8-1/2 7 7-3/4 8-5/8 8FT. CATALOGED 160 17-9/16 11-3/4 5-13/16 10-1/4 Standard bulb for temperature ranges beginning at 120° F. or above. G 1 1 1-1/4 1-1/4 1-1/4 1-1/4 H 18 18 18 18 18 24 T* 1 1 1-1/4 1-1/4 1-1/4 1-1/4 1-1/4 18 1-1/4 1-1/4 18 1-1/4 1-1/4 24 1-1/4 **Standard bulb for temperature ranges beginning below 120° F. G 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 H 24 24 28 28 28 32 T* 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 28 1-1/2 1-1/2 28 1-1/2 1-1/2 32 1-1/2 * Standard pipe thread. ** Bulb sizes for ranges beginning below 120° F. are necessary to provide "cross-ambient" charge. This assures operation with ambient temperature either above or below the control setting. Under some conditions, smaller bulbs may be used with lower ranges. If the larger bulb cannot be used, consult the factory or nearest representative. SATR VALVES FOR RT-1004-Al SERIES (See Valve Spec. Sheet for full details) THREE WAY TWO WAY Style A Union Ends Single Seated Unbalanced Bronze Body SS Trim Direct Acting Sizes 1/2" – 1" Reverse Acting Sizes 1/2" – 1-1/2" Style MA & MAS Single Seated Fully Balanced Direct Acting only SS Trim MA Sizes 3/4" – 1-1/2" Union Ends Bronze Body MA Size 2" Flanged Bronze or C.I. Body MAS Sizes 1" – 2" Flanged Steel Body MAS Sizes 3/4" – 1-1/2" Threaded Ends Steel Body Style FA Double Seated Semi-Balanced Reverse Acting: 3/4" – 1-1/2" Bronze Unions Bronze Body Bronze or Monel Trim Reverse Acting: 2" Flanged Bronze Body Bronze or Monel Trim Reverse Acting: 2" Flanged Cast Iron Body Bronze or SS Trim Reverse Acting: 2-1/2" - 4" Flanged Bronze Body Monel Trim Reverse Acting: 2-1/2" - 4" Flanged Cast Iron Body SS Trim Direct Acting: 2-1/2" - 4" Flanged Cast Iron Body SS Trim 3 Style WA Union Ends (2) Threaded End (Bottom) Unbalanced Sizes 1/2"- 1-1/2" Bronze Body SS Trim Style WD Balanced Sizes 2" - 3" Flanged Bronze Body Bronze Trim Style WBI Double Seated Semi-Balanced Size: 3" Flanged Cast Iron Body Bronze Trim Q-4038 (11/04) 4 Printed in U.S.A.
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