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16LF500

group: 16LF500

The Apollo Valves 16-503 and 16-504 calibrated pressure relief valve allows for in-line pressure adjustments without need for a pressure gauge. Provides static overpressure protection for liquid filled systems such as well pumps, tanks, fire protection systems.

  • Choice of 1/2" or 3/4" inlet connection
  • Factory preset at 100 psi
  • Pressure range 50 to 175 psi, calibrated in 25 psi increments
  • Cast bronze body, stainless steel spring
  • Silicon soft seat, EPDM cap seal
  • Maximum recommended service temperature 200˚F

 

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applications

heating

heating

cooling

cooling

segments

commercial building

commercial building

approvals

CRN

CRN

NSF

NSF

item number

size

d1

DN1

l1

d2

DN2

l2

z2

h1

V

item number

16LF50301

size

1/2" (DN15)

d1

21.3

DN1

1/2" (DN15)

l1

34

d2

21.3

DN2

1/2" (DN15)

l2

29

z2

17

h1

35

V

39

item number

16LF50401

size

3/4" (DN20) x 1/2" (DN15)

d1

26.7

DN1

3/4" (DN20)

l1

34

d2

21.3

DN2

1/2" (DN15)

l2

29

z2

17

h1

35

V

20

technical drawing for product

characteristics

color

bronze

materials

bronze (C89836 (lead-free))

finishing

none

manufacturer

Aalberts integrated piping systems Americas, Inc. (Apollo)

shape

Perpendicular

connection type

MPT - male thread conical (NPT), FPT - female thread conical (NPT)

general

product group

valves (safety relief valves)

ETIM class

EC011311 Safety valve

brand

Apollo

series

16 Series Safety Relief Valves

type

16LF50X01

UNSPS

40141606

label

value

label

ETIM class

label

Housing material

value

Bronze

label

Connection 1

value

External thread conical (NPT)

label

Connection 2

value

Internal thread conical (NPT)

label

Nominal diameter connection 2

value

1/2 inch (15)

label

Outer pipe diameter connection 2

value

21.34mm

label

Outer pipe diameter connection 2 (imperial)

value

0.84"

label

Max. operating pressure at 20 °C

value

12.07bar

label

Max. operating pressure at 20 °C (imperial)

value

175psi

label

Surface protection

value

Untreated

label

Length of connection 1

value

34.04mm

label

Length of connection 1 (imperial)

value

1.34"

label

Length of connection 2

value

29.21mm

label

Length of connection 2 (imperial)

value

1.15"

label

Working length connection 2

value

17.25mm

label

Working length connection 2 (imperial)

value

0.68"

label

Height

value

87mm

label

Suitable for heating

value

Yes

label

Suitable for cooling

value

Yes

label

Suitable for solar heating

value

No

label

Suitable for hot tap water

value

No

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