Varec 2010B/2020B Pressure and Vacuum Relief Valves 2010B

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Peter Townsend
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Varec 0B/B The Varec 0B/B protects tanks from damage or deformation, and minimizes emissions to the environment, as well as loss of product due to evaporation.

The B allows vapors to be piped away for recovery or destruction.

1 Varec 0B/B The Varec 0B/B protects tanks from damage or deformation, and minimizes emissions to the environment, as well as loss of product due to evaporation. Introduction The Varec 0B and B and Relief Valves are designed for use on atmospheric and low pressure storage tanks. The 0B vents to atmosphere. The B allows vapors to be piped away for recovery or destruction. The primary function of both models is to protect the tank from physical damage or permanent deformation caused by increases in internal pressure or vacuum encountered in normal operations. On smaller tanks, the valve may also provide sufficient flow capacity for emergency venting. The air-cushion seating design keeps the valve tightly sealed until the pressure inside the tank approaches the valve setting. Valve selection should be in accordance with American Petroleum Institute Standard 00 or other applicable standard. Flow curves are provided to help you select the proper valve size for your venting requirements. Additionally, Varec s applications engineering staff and factory trained representatives are always available to assist you. By controlling tank venting, the 0B and B not only minimize emissions to the environment, but also minimize the loss of product to evaporation. When combined with a well-designed vapor recovery system, the loss can be cut to essentially zero. An All-Weather option is offered for freezing climates. The design features a special nonfrosting and icing-resistant coating on the pallet perimeter, stem, guide posts and tip-of-seat ring. The coating, along with the flexible Teflon seat insert, provides additional protection against pallets freezing closed. For high temperature and chemical applications, Varec recommends one of the extended service options, which offers the selection of O-ring, gasket, and screen material. 0B B Features The pressure and vacuum ports are oversized to provide maximum flow capacity. The hood and cover can be easily removed for inspection and maintenance. The seat rings are both interchangeable and field replaceable. Protective screens are provided at pressure and vacuum ports to help prevent entrance of foreign matter. The outlet adapter on the B Series is one pipe size larger than the valve inlet flange to optimize flow capacity. The 0B and B are part of Varec s modular products which use interchangeable components for assembling a variety of functional configurations. The modular design provides flexibility of field installation and allows the valve to be reconfigured, repaired and even upgraded on-site by simply replacing or adding components. Available Materials Aluminum Carbon Steel Stainless Steel Ductile Iron Special Materials on Application Technical Data " to " [0-00 mm] sizes available. Vent to atmosphere or pipe away model. Oversized pressure and vacuum ports. Optional All-Weather coating of valve seats and guides. Extended service available for chemical applications. Replaceable and interchangeable pressure and vacuum seat rings. Leakage rate of SCFH [0.0 Nm /hr] or less at 0% of setpoint. settings up to psig [0. barg]. Flow Control Varec is either a trademark or registered trademark of Tyco International Services AG or its affiliates in the United States and/or other countries. All other brand names, product names, or trademarks belong to their respective holders. Copyright 0 Tyco Flow Control. All rights reserved. VRCMC-0-US-00

2 Varec 0B/B Specifications The 0B and B Series and Relief Valves are available in a variety of configurations to meet your specific needs. Sizes " [0 mm] " [0 mm] " [00 mm] 0B/B: " [0 mm] " [0 mm] 0" [ mm] " [00 mm] " x " " x " " x " B/B: " x " " x 0" 0" x " " x " Flanged Connections Standard Flange Drilling Aluminum Drilled to ANSI/ASA Class dimensions (Flat Face) Drilled to DIN [ Bar] dimensions (Flat Face) CS, DI and SS Body Drilled to ANSI Class 0 dimensions (Raised or Flat Face) Drilled to Imperial DIN [ Bar] dimensions (Raised or Flat Face) Drilled to JPI or JIS (Raised or Flat Face) - consult your sales representative Mounting Studs Fractional (Imperial) Metric Testing Each valve is tested for proper setting and for a leakage rate of less than SCFH (0.0 Nm /hr) of air at 0 percent of the set point. Each valve is tested for leak tightness at percent of set point as required in API Standard 00. Parts and Materials Table (see page ) Material Code Item Body Aluminum Aluminum Carbon Steel SS Ductile Iron Weatherhood Aluminum Aluminum Carbon Steel SS Carbon Steel Guide Stem Aluminum SS SS SS SS Guide Posts SS SS SS SS SS Pallet Aluminum SS SS SS SS Seat Ring Aluminum SS SS SS SS Seat Ring Retainer Polypropylene Polypropylene Polypropylene Polypropylene Polypropylene Insert Teflon Teflon Teflon Teflon Teflon Insert Retainer Aluminum SS SS SS SS 0 Screen HDPE HDPE HDPE HDPE HDPE Gaskets Fiber Fiber Fiber Fiber Fiber O-ring BUNA-N BUNA-N BUNA-N BUNA-N BUNA-N Weights Lead Lead Lead Lead Lead Notes. Materials are as standard. See model option code for other materials and their associated temperature ranges.. Teflon coated aluminum may be supplied with material codes - to achieve lower settings.. All nuts and cap screws are SS. Copyright 0 Tyco Flow Control. All rights reserved. VRCMC-0

4 Varec 0B/B Specifications Setting Information Minimum Minimum Set, oz/in Set, oz/in Low Set Range High Set Range Size Aluminum SS Aluminum SS 0B " Min to oz/in Min to 0 oz/in.0 oz/in to psig 0.0 oz/in to psig " Min to oz/in Min to 0 oz/in.0 oz/in to psig 0.0 oz/in to psig " Min to oz/in Min to oz/in.0 oz/in to psig.0 oz/in to psig " Min to oz/in Min to oz/in.0 oz/in to psig.0 oz/in to psig " Min to oz/in Min to oz/in.0 oz/in to psig.0 oz/in to psig 0" Min to oz/in Min to oz/in.0 oz/in to psig.0 oz/in to psig " Min to oz/in Min to oz/in.0 oz/in to psig.0 oz/in to psig B " Min to oz/in Min to 0 oz/in.0 oz/in to psig 0.0 oz/in to psig " Min to oz/in Min to 0 oz/in.0 oz/in to psig 0.0 oz/in to psig " Min to oz/in Min to oz/in.0 oz/in to psig.0 oz/in to psig " Min to oz/in Min to oz/in.0 oz/in to psig.0 oz/in to psig " Min to oz/in Min to oz/in.0 oz/in to psig.0 oz/in to psig 0" Min to oz/in Min to oz/in.0 oz/in to psig.0 oz/in to psig " Min to oz/in Min to oz/in.0 oz/in to psig.0 oz/in to psig B " Min to 0 oz/in Min to 0 oz/in 0.0 oz/in to psig 0.0 oz/in to psig " Min to 0 oz/in Min to 0 oz/in 0.0 oz/in to psig 0.0 oz/in to psig " Min to oz/in Min to oz/in.0 oz/in to psig.0 oz/in to psig " Min to oz/in Min to oz/in.0 oz/in to psig.0 oz/in to psig " Min to oz/in Min to oz/in.0 oz/in to psig.0 oz/in to psig 0" Min to oz/in Min to oz/in.0 oz/in to psig.0 oz/in to psig " Min to oz/in Min to oz/in.0 oz/in to psig.0 oz/in to psig B " Min to 0 oz/in Min to 0 oz/in 0.0 oz/in to psig 0.0 oz/in to psig " Min to 0 oz/in Min to 0 oz/in 0.0 oz/in to psig 0.0 oz/in to psig " Min to oz/in Min to oz/in.0 oz/in to psig.0 oz/in to psig " Min to oz/in Min to oz/in.0 oz/in to psig.0 oz/in to psig " Min to oz/in Min to oz/in.0 oz/in to psig.0 oz/in to psig 0" Min to oz/in Min to oz/in.0 oz/in to psig.0 oz/in to psig " Min to oz/in Min to oz/in.0 oz/in to psig.0 oz/in to psig Lower settings may be available. Please consult your sales representative. All valves are factory tested for leakage and correct setting prior to shipment. Certification of valve setting is available upon request. The mixed pressure/vacuum set ranges, 0 and 00 (Low /High and High /Low ) use heavier pallets, and therefore have higher low set range minimums. For these cases, add the applicable value from the following table to the low set range minimum. (This increase does not apply for 0" and " B/B.) Size Aluminum SST " " " " " " " Copyright 0 Tyco Flow Control. All rights reserved. VRCMC-0

5 Varec 0B/B Flow Curves for 0B Series, Set at 0. inch of Water 0 0 With API Std. 00. Certified Test Data by 0 " " " " " 0" " Thousands of Cubic Feet/Hour at 0 F and. psia, Air Flow (SCFH) " " " " " 0" " 0 0 Thousands of Cubic Feet/Hour at 0 F and. psia, Air Flow (SCFH) Copyright 0 Tyco Flow Control. All rights reserved. VRCMC-0

6 Varec 0B/B Flow Curves for 0B Series, Set at inch of Water 0 0 With API Std. 00. Certified Test Data by 0 " " " " " 0" " Thousands of Cubic Feet/Hour at 0 F and. psia, Air Flow (SCFH) " " " " " 0" " 0 0 Thousands of Cubic Feet/Hour at 0 F and. psia, Air Flow (SCFH) Copyright 0 Tyco Flow Control. All rights reserved. VRCMC-0

7 Varec 0B/B Flow Curves for 0B Series, Set at inches of Water 0 0 With API Std. 00. Certified Test Data by " " " " " 0" " Thousands of Cubic Feet/Hour at 0 F and. psia, Air Flow (SCFH) " " " " " 0" " 0 0 Thousands of Cubic Feet/Hour at 0 F and. psia, Air Flow (SCFH) Copyright 0 Tyco Flow Control. All rights reserved. VRCMC-0

8 Varec 0B/B Flow Curves for 0B Series, Set at inches of Water 0 0 With API Std. 00. Certified Test Data by " " " " " 0" " Thousands of Cubic Feet/Hour at 0 F and. psia, Air Flow (SCFH) " " " " " 0" " 0 Thousands of Cubic Feet/Hour at 0 F and. psia, Air Flow (SCFH) Copyright 0 Tyco Flow Control. All rights reserved. VRCMC-0

9 Varec 0B/B Flow Curves for 0B Series, Set at inches of Water 0 0 With API Std. 00. Certified Test Data by " " " " " 0" " Thousands of Cubic Feet/Hour at 0 F and. psia, Air Flow (SCFH) " " " " " 0" " 0 Thousands of Cubic Feet/Hour at 0 F and. psia, Air Flow (SCFH) Copyright 0 Tyco Flow Control. All rights reserved. VRCMC-0

10 Varec 0B/B Flow Curves for 0B Series, Set at inches of Water 0 0 With API Std. 00. Certified Test Data by " " " " " 0" " Thousands of Cubic Feet/Hour at 0 F and. psia, Air Flow (SCFH) " " " " " 0" " Thousands of Cubic Feet/Hour at 0 F and. psia, Air Flow (SCFH) Copyright 0 Tyco Flow Control. All rights reserved. VRCMC-0 0

11 Varec 0B/B Flow Curves for 0B Series, Set at 0 inches of Water 0 0 With API Std. 00. Certified Test Data by " " " " " 0" " Thousands of Cubic Feet/Hour at 0 F and. psia, Air Flow (SCFH) " " " " " 0" " Thousands of Cubic Feet/Hour at 0 F and. psia, Air Flow (SCFH) Copyright 0 Tyco Flow Control. All rights reserved. VRCMC-0

12 Varec 0B/B Flow Curves for B Series, Set at 0. inch of Water 0 0 With API Std. 00. Certified Test Data by 0 " " " " " 0" " Thousands of Cubic Feet/Hour at 0 F and. psia, Air Flow (SCFH) " " " " " 0" " 0 0 Thousands of Cubic Feet/Hour at 0 F and. psia, Air Flow (SCFH) Copyright 0 Tyco Flow Control. All rights reserved. VRCMC-0

13 Varec 0B/B Flow Curves for B Series, Set at inch of Water 0 0 With API Std. 00. Certified Test Data by 0 " " " " " 0" " Thousands of Cubic Feet/Hour at 0 F and. psia, Air Flow (SCFH) " " " " " 0" " 0 0 Thousands of Cubic Feet/Hour at 0 F and. psia, Air Flow (SCFH) Copyright 0 Tyco Flow Control. All rights reserved. VRCMC-0

14 Varec 0B/B Flow Curves for B Series, Set at inches of Water 0 0 With API Std. 00. Certified Test Data by " " " " " 0" " Thousands of Cubic Feet/Hour at 0 F and. psia, Air Flow (SCFH) " " " " " 0" " 0 0 Thousands of Cubic Feet/Hour at 0 F and. psia, Air Flow (SCFH) Copyright 0 Tyco Flow Control. All rights reserved. VRCMC-0

15 Varec 0B/B Flow Curves for B Series, Set at inches of Water 0 0 With API Std. 00. Certified Test Data by " " " " " 0" " Thousands of Cubic Feet/Hour at 0 F and. psia, Air Flow (SCFH) " " " " " 0" " 0 0 Thousands of Cubic Feet/Hour at 0 F and. psia, Air Flow (SCFH) Copyright 0 Tyco Flow Control. All rights reserved. VRCMC-0

16 Varec 0B/B Flow Curves for B Series, Set at inches of Water 0 0 With API Std. 00. Certified Test Data by " " " " " 0" " Thousands of Cubic Feet/Hour at 0 F and. psia, Air Flow (SCFH) " " " " " 0" " 0 Thousands of Cubic Feet/Hour at 0 F and. psia, Air Flow (SCFH) Copyright 0 Tyco Flow Control. All rights reserved. VRCMC-0

17 Varec 0B/B Flow Curves for B Series, Set at inches of Water 0 0 With API Std. 00. Certified Test Data by " " " " " 0" " Thousands of Cubic Feet/Hour at 0 F and. psia, Air Flow (SCFH) " " " " " 0" " Thousands of Cubic Feet/Hour at 0 F and. psia, Air Flow (SCFH) Copyright 0 Tyco Flow Control. All rights reserved. VRCMC-0

18 Varec 0B/B Flow Curves for B Series, Set at 0 inches of Water 0 0 With API Std. 00. Certified Test Data by " " " " " 0" " Thousands of Cubic Feet/Hour at 0 F and. psia, Air Flow (SCFH) " " " " " 0" " Thousands of Cubic Feet/Hour at 0 F and. psia, Air Flow (SCFH) Copyright 0 Tyco Flow Control. All rights reserved. VRCMC-0

19 Varec 0B/B Dimensions, in. [mm] A A 0B and B Size Code 0 Nominal 0 Pipe Size [0] [0] [00] [0] [0] [] [00] B A B [] [] [] [0] [] [] [] 0 [] [] [0] [] [] [] [] A C Lead Weight (A/R) C [] [] [] [] [] [] [] D 0 Low Set [] [] [] [] [] [] [0] D High Set [] [] [] [] [] [] [0] Figure shown is for high set option. D Section A-A B and B Size Code 0 A A Nominal x x x x x 0 0 x x Pipe Size [0 x 0] [0 x 00] [00 x 0] [0 x 0] [0 x ] [ x 00] [00 x 0] A [] [] [] [] [] [] [] A E D Lead Weight (A/R) B 0 [] [] [] [] [0] [0] [] C 0 Low Set [] [] [] [] [] [00] [] C High Set [] [] [] [] [] [] [] D 0 [] [] [] [] [] [] [0] C E 0 [] [] [] [] [] [] [] B Figure shown is for high set option. Section A-A Dimensions are for preliminary general information and should not be used for construction purposes. Certified dimensional drawings are available upon request. Copyright 0 Tyco Flow Control. All rights reserved. VRCMC-0

20 Varec 0B/B Ordering Information Code Description Air Cushion / Relief Valve Code Model Vent-to-Atmosphere Pipe-Away Code 0B B Configuration Standard All Weather Type (- F to 0 F) Code Size " (" x ") " (" x ") " (" x ") " (" x ") " (" x 0") 0 0" (0" x ") " (" x ") Code Body/Trim Material Aluminum/Aluminum (- F to F) Aluminum/ Stainless Steel (- F to F) Carbon Steel/ Stainless Steel (- F to 0 F) Stainless Steel/ Stainless Steel (- F to 0 F) Ductile Iron/ Stainless Steel ( to Inch only) (- F to F) Code T B V Insert Material Teflon (- F to 00 F) BUNA-N (-0 F to F) Viton (- F to 00 F) Code FF MF FR Example: " size Aluminum body/ss trim, Teflon insert, FF Flanges, Standard Fiber/BUNA-N gaskets, low set pressure and vacuum, temperature range: - F to F. MR DF DR Flange Connection # ANSI/ASA Flat Face Flange Drilling with Fractional Studs # ANSI/ASA Flat Face Flange Drilling with Metric Studs 0# ANSI/ASA Raised Face Flange Drilling with Fractional Studs (not available on Aluminum) 0# ANSI/ASA Raised Face Flange Drilling with Metric Studs (not available on Aluminum) DIN Flat Face Flange Drilling DIN Raised Face Flange Drilling (not available on Aluminum) Code OP OS TP TS BP BS VP VS Gasket/O-ring and Retainer/Screen Material Standard Fiber/BUNA-N and Plastic (-0 F to F) Standard Fiber/BUNA-N and Stainless Steel (-0 F to F) Teflon and Plastic (- F to F) Teflon and Stainless Steel (- F to 0 F) BUNA-N and Plastic (-0 F to F) BUNA-N and Stainless Steel (-0 F to F) Viton and Plastic (- F to F) Viton and Stainless Steel (- F to 0 F) Code Setting Range (see table, page ) 0 Low Setting 0 High Setting 0B T FF 0P 0 0 (Example) Code Setting Range (see table, page ) 0 Low Setting 0 High Setting Tyco Flow Control (TFC) provides the information herein in good faith but makes no representation as to its comprehensiveness or accuracy. This data sheet is intended only as a guide to TFC products and services. Individuals using this data sheet must exercise their independent judgment in evaluating product selection and determining product appropriateness for their particular purpose and system requirements. TFC MAKES NO REPRESENTATIONS OR WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE WITH RESPECT TO THE INFORMATION SET FORTH HEREIN OR THE PRODUCT(S) TO WHICH THE INFORMATION REFERS. ACCORDINGLY, TFC WILL NOT BE RESPONSIBLE FOR DAMAGES (OF ANY KIND OR NATURE, INCLUDING INCIDENTAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES) RESULTING FROM THE USE OF OR RELIANCE UPON THIS INFORMATION. Patents and Patents Pending in the U.S. and foreign countries. Tyco reserves the right to change product designs and specifications without notice. All registered trademarks are the property of their respective owners. Printed in the USA. Copyright 0 Tyco Flow Control. All rights reserved. VRCMC-0

Varec 3500B, 3600B and 3650B Series Weight Loaded Vacuum or Pressure Relief Valves. 3500B Series

Varec 3500B, 3600B and 3650B Series Weight Loaded Vacuum or Pressure Relief Valves. 3500B Series Varec 00B, 00B and 0B Series Weight Loaded or Pressure Relief Valves The 00B, 00B and 0B vacuum breakers are designed to provide superior seat tightness while protecting liquid storage vessels, vapor recovery