C
E
- S
- s
- S
- S
- E
p
- C
  - C
  - C
- s
- S
- C
- A
- V
- v
- V
- V
- O
N
- N
- N
S
- T
- D
C

XFNT-3

E
V

V

PC, V, K,V<

P

XF20005C — C
L

Vent valve XF85829 — v

Heating valve XF60611 A — V

Brass water control ball valve — v

2005A — C

Heating valve XF60228 — V

XF85695 AIR VENT — V

REFRACTION

L

C
C
C
v
S
C
V
V
C
V
R
C

B
V
R

E

<
L

<
C

<
L

<
E

M
L

<

V

V2
L
G2
U
j2
L
A2
S
M2
E
R2
E

b

V
V
V
V
P
C
T
P
V
V
V

E

S
E
s
S
S

p

C
s
S
C
A
V
v
V
V

I

N
N

C

C
0
T
i

©

P