Produkty f-my Clark Kennedy Company Limited
  15 Leading Road
  Rexdale, Ontario (Canada)  M9V 4B7

Elliptical Handhole & Manhole Assemblies

The self-sealing yoke and bolt manway provides the most economical and reliable access to pressure vessels.  Yokes are designed for the positioning and holding of the covers only.  Gasket sealing is accomplished by the appliction of internal pressure.

When cover assemblies are ordered without rings, customers are requested to specify the bolt length required. 

Handhole and manhole covers are designed and fabricated in accordance with the ASME code.  (See cover profile drawing)  The size and pressure temperature rating are stamped on all covers where space permits.  All sizes shown are in inches.  The nominal size dimensions are the inside dimensions of the opening into which the covers will be installed. 

Covers are stocked in SA516 Grade 70 steel.  They can also be supplied in stainless steel (grades 304, 304L, 316 and 316L).  Our gasket stock includes red rubber, neoprene and Thermofab 500.  Gaskets in other materials are available on request.

All covers are registered in Canada.
 

Covers Size
in Inches

Type

Max PSI rating
(depending on Design Temp.)

Ship Weight

2-3/4 x 3-5/8

Welded Stud/Radius

1000 psi

3 lbs

3-1/2 x 4-1/2

Welded Stud/Anchor

800 psi

4 lbs

4 x 6 

Single bolt

1000 psi

8 lbs

6 x 8 

Single bolt

660 psi

12 lbs

11 x 15

Double bolt

300 psi

23 lbs

12 x 16 

Double bolt

900 psi

32 lbs

14 x 18 

Double bolt

600 psi

42 lbs

18 x 24

Double bolt

200 psi

110 lbs

Low Pressure Circular Hinged Closures

Features & Benefits

·         Hand tightening feature

·         A.S.M.E. 'U' stamp provided

·         Data report provided

·         10" (254mm) high collar provided as standard, other lengths available

·         Unique one-piece head

·         50 psi/full vacuum design

·         Carbon or stainless steel

·         Provides simple, fast and economical means of access

·         Other sizes and materials available on request

·         All swing bolts are SA192-B2-B8 CL1 material (stainless steel)

·         Replacement parts readily available

·         Buna 'N' gasket material is standard.  Special gasket material is available on request.

Size

Cover/Collar
Material

Part No.

No. of Bolts

Wt.
(lb/kg)

10"

Carbon steel

B92-220

3

38 / 17.2

10"

316 L stainless

B92-221

3

38 / 17.2

20"

Carbon steel

B92-222

6

91 / 41.3

20"

316 L stainless

B92-223

6

91 / 41.3

T-Bolt Hingled Closures

Features & Benefits

·         Quick opening

·         Simple to install

·         Low maintenance costs

·         Pipe sizes 6" through 42" available

·         A.S.M.E. 'U' stamp provided as standard

·         Partial data report provided

·         SA193 - B7/SA194 - 2H bolting is standard, others available

·         Replacement parts readily available

·         6" (152mm) high collar is standard, other lengths available

·         Pressures to 300 PSIG

·         Carbon or stainless steel construction (in various grades to customer spec.)

·         Optional machining for single butt weld to pipe

·         Welded or seamless construction

·         Buna 'N' O-ring is standard, other materials available