( 8 0 0 ) 910 - 4 2 95 | w w w. ha w k - e y e . c o m

V E N T I N G | G A U G E H ATC H E S

M O D E L 2 0 0 & 3 0 0 T V T H

Features• Economical gauge and thief hatch with integral pressure and vacuum relief.• Flush top-mounted design does not extend into tank.• Available in 4, 6, 8, 12, 16 and 32 ozsi pressure relief settings, with fixed 0.4 ozsi

vacuum relief.• Standard sweet trim (Model 200 TVTH). • Sour Service Trim (Model 300 TVTH) with stainless or inconel springs.• Fusion-bond Epoxy (FBE) coating available for severe sour service.

2 V E N T I N G | G A U G E H ATC H E S | M o d E l 20 0 & 3 0 0 T V T H

F E AT U R E S

Economical Thief Hatch• The Tank Vent Thief Hatch (TVTH) Model 200 and

300 are a budget-conscious choice for integrated thief access and pressure + vacuum relief.

Flush Top-Mount design• The pressure and vacuum relief mechanism operates

above the tank roof to maintain functionality if the thief hatch opening is irregular or undersize.

Variety of Pressure Settings• The Model 200 & 300 TVTH are available with

wide variety of factory-set pressure relief settings • Vacuum relief is fixed at 0.4 ozsi.

Two Trim Levels for Sweet or Sour Service• The Model 200 TVTH is designed for sweet service

with polyisoprene pressure and vacuum gaskets and stainless steel springs.

• The Model 300 TVTH is suitable for sour service, with expanded FKM (Sponge Viton) gaskets and stainless steel, or optionally inconel, springs.

FBE Coating• For especially sour environments, a Fusion-bond

Epoxy coating is available.• For acid service, refer to the Model 400 Acid

Service TVTH.

R E L I E F S E T T I N G S

The following relief pressures are available and in stock.

Pressure Setting TVTH 200 TVTH 300

[ozsi] AISI 302 SS INCoNEl

4

6

8

12

16

32

Vacuum Setting TVTH 200 TVTH 300

[ozsi] AISI 302 SS INCoNEl

0.4

D I M E N S I O N S

dimension Value

[in.] [mm.]

Hc Height (Closed) 5 ½ 140

Ho Height (Minimum to open) 14 ¼ 362

lc length (Hatch Closed) 13 ½ 343

lo length (Hatch open) 24 ½ 622

W Width 12 ¼ 311

T Flange Thickness ½ 13

Weight 11 ¼ lb 5.1 kg

B Bolt Hole 17/32 13.5

Id Cutout diameter 8 203

BCd Bolt Circle diameter 10-3/8 264

Bolt Size & Number ½-13UNC-2A x 16 plcs

S P E C I F I C AT I O N SFunction Venting Gauge Hatch

Tank Access + Pressure & Vacuum Relief

Temperature Range -40°C to 75°C (Model 200, polyisoprene)-25°C to 205°C (Model 300, eFKM).

Pressure Relief Type Spring-loaded pallet

Pressure Relief Range 4 to 32 ozsi (see Relief Settings)

Vacuum Relief Range 0.4 ozsi fixed

Tank Connection 8” API (Fig 1 API 12F)

B

ID

BCD

AS PER FIG. 1API 12 F

Lc

W

Hc

Ho

Lo

T

Pressures not listed can be achieved, but with additional lead time and a 25 pc minimum order.

V E N T I N G | G A U G E H ATC H E S | M o d E l 20 0 & 3 0 0 T V T H 3

PA RTS L I S T & M AT E R I A L S O F C O N S T R U C T I O N

1.4 1.3

1.1

1.21.5

4

1

2

3

5

1.4.1

1.4.2

1.4.3

1.4.4

1.4.5

1.4.6

1.4.7

1.4.8

1.4.91.4.101.4.11

Item Part Name Std. Material opt. Material

1 TVTH Assembly

1.1 TVTH lid Al Zld108

1.2 TVTH Base Al Zld108

1.3 Pressure Spring 302 SS X750 Inconel¹

1.4 Pressure & Vacuum Pallet

1.4.1 Vacuum Spring Screw AISI 304 SS

1.4.2 Vacuum Spring Washer AISI 304 SS

1.4.3 Vacuum Spring 302 SS X750 Inconel¹

1.4.4 Vacuum stem Al6061 oR EQ

1.4.5 P & V Pallet Al Zld108

1.4.6 Vacuum disc Al 5052 oR EQ

1.4.7 Vacuum Gasket Polyisoprene eFKM²

1.4.8 Vacuum Plate Al 5052 oR EQ

1.4.9 V. Gasket Washer AISI 304 SS

1.4.10 V. Gasket Screw AISI 304 SS

1.4.11 P. Gasket Polyisoprene eFKM²

1.5 latch Al Zld108

2 Base Gasket Chloroprene FKM

3* Tank connection

4† Installation Bolt

5† Installation Nut

* parts supplied by others † parts sold separately

¹ Available on Model 300 only² Standard on Model 300

C E RT I F I C AT I O N

The Model 200 and 300 TVTH pressure and vacuum relief settings can be factory certified at an additional expense. Prior to packaging, the Model 200 and 300 are tested on the low-flow test bench for pressure-tight-ness and confirmation of relief setting. Certified hatches are accompanied by a certificate stating the relief pres-sure of the hatches. PAC K AG I N G

Model 200 and 300 TVTH are shipped ready-to-install in individual boxes. Package dimensions are 13 in. wide, 12 ¾ in. deep and 6 in. high and weigh 12 ½ lb each. Bulk orders of Model 200 or 300 TVTH can be palletized in multiples of 21 units (eg 21 pc, 42 pc, 63 pc, etc).

4 V E N T I N G | G A U G E H ATC H E S | M o d E l 20 0 & 3 0 0 T V T H

Contents © 2006 - 2020 Hawkeye Industries Inc. This document is uncontrolled, and is subject to change without notice. Please refer to www.hawk-eye.com for the most up-to-date product information.

2110 70 Ave NWEdmonton, AB, Canada T6P 1N6Toll Free: (800) 910-4295Phone: (780) 490-4295Fax: (780) 490-4290www.hawk-eye.com

VENTING - ModEl 200 ANd 300 TVTH 15MAy2020Printed in Canada.

O R D E R I N G I N F O R M AT I O N

Most Model 200 and Model 300 TVTH configurations are stocked in Edmonton, ready to ship 1-day or less.

R E L AT E D P R O D U C TS

The Model 200 and 300 TVTH are just one part of tankage product lines from Hawkeye Industries, which also include:

Vapor Control

• Tank Gaskets & Bolt Kits

• Series 5000 EPRV

• Series 6000 PVRV

Mechanical Level Indication

• Model 375lS low Profile liquid Seal level Indication System

• Model 750 open level Indication System and Model 750lS liquid Seal level Indi-cation System

Series 5000 EPRV

-3.2

-3

-2.8

-2.6

-2.4

-2.2

-2

-1.8

-1.6

-1.4

-1.2

-1

-0.8

-0.6

-0.4

-0.2

0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32

TAN

K V

AC

UU

M,

V (

OZ

SI)

Adapted from data collected through full-scale flow testing conducted June 2017 by C-FER Technologies (1999) Inc.

Vacuum flow rates reported to 800% set pressure and are valid for air.

Full test report avaialble upon request.

V A C U U M F L O W R A T E0.4 ozsi set vacuum

0

2

4

6

8

10

12

14

16

18

20

22

24

26

28

30

32

34

36

38

40

42

44

46

48

50

52

54

56

58

60

62

64

0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130 135 140 145 150

TAN

K P

RE

SS

UR

E,

P (

OZ

SI)

F L O W RA T E T H R O U G H T V T H , Q , × 1 0 0 0 S C F H ( A I R )

Adapted from data collected through full-scale flow testing conducted June 2017 by C-FER Technologies (1999) Inc.

All flow rates reported to 400% set pressure and are valid for air.

Full test report avaialble upon request.

P R E S S U R E F L O W R A T E

12 ozsi set pressure

8 ozsi set pressure

4 ozsi set pressure6 ozsi set pressure

32 ozsi set pressure

16 ozsi set pressure

F LOW C H A R AC T E R I S T I C

Empirical flow rate information for the Model 200 and 300 TVTH below is adapted from data collected from full-scale flow testing conducted by C-FER Technologies (1999) Inc. in June 2017. Model 375LS

Level Gauging System

Model 200 TVTH (Sweet) Model 300 TVTH (Sour)

4 ozsi 046 ozsi 068 ozsi 0812 ozsi 1216 ozsi 1632 ozsi 32

[Sp] Set PressureSelection Flag

Isoprene R

[G] Seal Mat’lSelection Flag

Stainless Steel S

[S] Spring Mat’lSelection Flag

Examples

Model 200 TVTH, 4 ozsi s.p., isoprene seals, stainless springs T200-04RS-000

Model 200 TVTH, 32 ozsi s.p., isoprene seals, stainless springs T200-32RS-000

Model 200 TVTH, 16 ozsi s.p., isoprene seals, stainless springs T200-16RS-000

Examples

Model 300 TVTH, 4 ozsi s.p., expanded FKM seals, stainless springs T300-04SS-000

Model 300 TVTH, 16 ozsi s.p., FFKM seals, inconel springs, svr. sour ctg. T300-16KI-010

Model 300 TVTH, 8 ozsi s.p., FEPM seals, stainless springs T300-08AS-000

Standard selections are in bold. NOTESModel 200 TVTH are only available with isoprene seals and stainless springs. For other material options, refer to the Model 300 TVTH.

Standard selections are in bold. NOTES1 Inconel springs not available for these pressure settings.

T200 000SGSpSp

4 ozsi 046 ozsi 068 ozsi 0812 ozsi 1216 ozsi 1632 ozsi 32

[Sp] Set PressureSelection Flag

Stainless Steel SInconel I

[S] Spring Mat’lSelection Flag

T300 SGSpSp ZYX

Bare 000Severe Sour Svc 010

[XYZ] CoatingSelection Flag

Expanded FKM SFKM (VITON) V

FEPM (AFLAS) A

FFKM (KALREZ) K

[G] Seal Mat’lSelection Flag

1

1